4 ** The author disclaims copyright to this source code. In place of
5 ** a legal notice, here is a blessing:
7 ** May you do good and not evil.
8 ** May you find forgiveness for yourself and forgive others.
9 ** May you share freely, never taking more than you give.
11 *************************************************************************
13 ** This file contains code use to implement APIs that are part of the
16 #include "sqliteInt.h"
19 #ifndef SQLITE_OMIT_DEPRECATED
21 ** Return TRUE (non-zero) of the statement supplied as an argument needs
22 ** to be recompiled. A statement needs to be recompiled whenever the
23 ** execution environment changes in a way that would alter the program
24 ** that sqlite3_prepare() generates. For example, if new functions or
25 ** collating sequences are registered or if an authorizer function is
28 int sqlite3_expired(sqlite3_stmt
*pStmt
){
29 Vdbe
*p
= (Vdbe
*)pStmt
;
30 return p
==0 || p
->expired
;
35 ** Check on a Vdbe to make sure it has not been finalized. Log
36 ** an error and return true if it has been finalized (or is otherwise
37 ** invalid). Return false if it is ok.
39 static int vdbeSafety(Vdbe
*p
){
41 sqlite3_log(SQLITE_MISUSE
, "API called with finalized prepared statement");
47 static int vdbeSafetyNotNull(Vdbe
*p
){
49 sqlite3_log(SQLITE_MISUSE
, "API called with NULL prepared statement");
56 #ifndef SQLITE_OMIT_TRACE
58 ** Invoke the profile callback. This routine is only called if we already
59 ** know that the profile callback is defined and needs to be invoked.
61 static SQLITE_NOINLINE
void invokeProfileCallback(sqlite3
*db
, Vdbe
*p
){
63 sqlite3_int64 iElapse
;
64 assert( p
->startTime
>0 );
65 assert( (db
->mTrace
& (SQLITE_TRACE_PROFILE
|SQLITE_TRACE_XPROFILE
))!=0 );
66 assert( db
->init
.busy
==0 );
68 sqlite3OsCurrentTimeInt64(db
->pVfs
, &iNow
);
69 iElapse
= (iNow
- p
->startTime
)*1000000;
70 #ifndef SQLITE_OMIT_DEPRECATED
72 db
->xProfile(db
->pProfileArg
, p
->zSql
, iElapse
);
75 if( db
->mTrace
& SQLITE_TRACE_PROFILE
){
76 db
->xTrace(SQLITE_TRACE_PROFILE
, db
->pTraceArg
, p
, (void*)&iElapse
);
81 ** The checkProfileCallback(DB,P) macro checks to see if a profile callback
82 ** is needed, and it invokes the callback if it is needed.
84 # define checkProfileCallback(DB,P) \
85 if( ((P)->startTime)>0 ){ invokeProfileCallback(DB,P); }
87 # define checkProfileCallback(DB,P) /*no-op*/
91 ** The following routine destroys a virtual machine that is created by
92 ** the sqlite3_compile() routine. The integer returned is an SQLITE_
93 ** success/failure code that describes the result of executing the virtual
96 ** This routine sets the error code and string returned by
97 ** sqlite3_errcode(), sqlite3_errmsg() and sqlite3_errmsg16().
99 int sqlite3_finalize(sqlite3_stmt
*pStmt
){
102 /* IMPLEMENTATION-OF: R-57228-12904 Invoking sqlite3_finalize() on a NULL
103 ** pointer is a harmless no-op. */
106 Vdbe
*v
= (Vdbe
*)pStmt
;
108 if( vdbeSafety(v
) ) return SQLITE_MISUSE_BKPT
;
109 sqlite3_mutex_enter(db
->mutex
);
110 checkProfileCallback(db
, v
);
111 rc
= sqlite3VdbeFinalize(v
);
112 rc
= sqlite3ApiExit(db
, rc
);
113 sqlite3LeaveMutexAndCloseZombie(db
);
119 ** Terminate the current execution of an SQL statement and reset it
120 ** back to its starting state so that it can be reused. A success code from
121 ** the prior execution is returned.
123 ** This routine sets the error code and string returned by
124 ** sqlite3_errcode(), sqlite3_errmsg() and sqlite3_errmsg16().
126 int sqlite3_reset(sqlite3_stmt
*pStmt
){
131 Vdbe
*v
= (Vdbe
*)pStmt
;
133 sqlite3_mutex_enter(db
->mutex
);
134 checkProfileCallback(db
, v
);
135 rc
= sqlite3VdbeReset(v
);
136 sqlite3VdbeRewind(v
);
137 assert( (rc
& (db
->errMask
))==rc
);
138 rc
= sqlite3ApiExit(db
, rc
);
139 sqlite3_mutex_leave(db
->mutex
);
145 ** Set all the parameters in the compiled SQL statement to NULL.
147 int sqlite3_clear_bindings(sqlite3_stmt
*pStmt
){
150 Vdbe
*p
= (Vdbe
*)pStmt
;
151 #if SQLITE_THREADSAFE
152 sqlite3_mutex
*mutex
= ((Vdbe
*)pStmt
)->db
->mutex
;
154 sqlite3_mutex_enter(mutex
);
155 for(i
=0; i
<p
->nVar
; i
++){
156 sqlite3VdbeMemRelease(&p
->aVar
[i
]);
157 p
->aVar
[i
].flags
= MEM_Null
;
159 assert( (p
->prepFlags
& SQLITE_PREPARE_SAVESQL
)!=0 || p
->expmask
==0 );
163 sqlite3_mutex_leave(mutex
);
168 /**************************** sqlite3_value_ *******************************
169 ** The following routines extract information from a Mem or sqlite3_value
172 const void *sqlite3_value_blob(sqlite3_value
*pVal
){
174 if( p
->flags
& (MEM_Blob
|MEM_Str
) ){
175 if( ExpandBlob(p
)!=SQLITE_OK
){
176 assert( p
->flags
==MEM_Null
&& p
->z
==0 );
179 p
->flags
|= MEM_Blob
;
180 return p
->n
? p
->z
: 0;
182 return sqlite3_value_text(pVal
);
185 int sqlite3_value_bytes(sqlite3_value
*pVal
){
186 return sqlite3ValueBytes(pVal
, SQLITE_UTF8
);
188 int sqlite3_value_bytes16(sqlite3_value
*pVal
){
189 return sqlite3ValueBytes(pVal
, SQLITE_UTF16NATIVE
);
191 double sqlite3_value_double(sqlite3_value
*pVal
){
192 return sqlite3VdbeRealValue((Mem
*)pVal
);
194 int sqlite3_value_int(sqlite3_value
*pVal
){
195 return (int)sqlite3VdbeIntValue((Mem
*)pVal
);
197 sqlite_int64
sqlite3_value_int64(sqlite3_value
*pVal
){
198 return sqlite3VdbeIntValue((Mem
*)pVal
);
200 unsigned int sqlite3_value_subtype(sqlite3_value
*pVal
){
201 Mem
*pMem
= (Mem
*)pVal
;
202 return ((pMem
->flags
& MEM_Subtype
) ? pMem
->eSubtype
: 0);
204 void *sqlite3_value_pointer(sqlite3_value
*pVal
, const char *zPType
){
206 if( (p
->flags
&(MEM_TypeMask
|MEM_Term
|MEM_Subtype
)) ==
207 (MEM_Null
|MEM_Term
|MEM_Subtype
)
210 && strcmp(p
->u
.zPType
, zPType
)==0
217 const unsigned char *sqlite3_value_text(sqlite3_value
*pVal
){
218 return (const unsigned char *)sqlite3ValueText(pVal
, SQLITE_UTF8
);
220 #ifndef SQLITE_OMIT_UTF16
221 const void *sqlite3_value_text16(sqlite3_value
* pVal
){
222 return sqlite3ValueText(pVal
, SQLITE_UTF16NATIVE
);
224 const void *sqlite3_value_text16be(sqlite3_value
*pVal
){
225 return sqlite3ValueText(pVal
, SQLITE_UTF16BE
);
227 const void *sqlite3_value_text16le(sqlite3_value
*pVal
){
228 return sqlite3ValueText(pVal
, SQLITE_UTF16LE
);
230 #endif /* SQLITE_OMIT_UTF16 */
231 /* EVIDENCE-OF: R-12793-43283 Every value in SQLite has one of five
232 ** fundamental datatypes: 64-bit signed integer 64-bit IEEE floating
233 ** point number string BLOB NULL
235 int sqlite3_value_type(sqlite3_value
* pVal
){
236 static const u8 aType
[] = {
237 SQLITE_BLOB
, /* 0x00 */
238 SQLITE_NULL
, /* 0x01 */
239 SQLITE_TEXT
, /* 0x02 */
240 SQLITE_NULL
, /* 0x03 */
241 SQLITE_INTEGER
, /* 0x04 */
242 SQLITE_NULL
, /* 0x05 */
243 SQLITE_INTEGER
, /* 0x06 */
244 SQLITE_NULL
, /* 0x07 */
245 SQLITE_FLOAT
, /* 0x08 */
246 SQLITE_NULL
, /* 0x09 */
247 SQLITE_FLOAT
, /* 0x0a */
248 SQLITE_NULL
, /* 0x0b */
249 SQLITE_INTEGER
, /* 0x0c */
250 SQLITE_NULL
, /* 0x0d */
251 SQLITE_INTEGER
, /* 0x0e */
252 SQLITE_NULL
, /* 0x0f */
253 SQLITE_BLOB
, /* 0x10 */
254 SQLITE_NULL
, /* 0x11 */
255 SQLITE_TEXT
, /* 0x12 */
256 SQLITE_NULL
, /* 0x13 */
257 SQLITE_INTEGER
, /* 0x14 */
258 SQLITE_NULL
, /* 0x15 */
259 SQLITE_INTEGER
, /* 0x16 */
260 SQLITE_NULL
, /* 0x17 */
261 SQLITE_FLOAT
, /* 0x18 */
262 SQLITE_NULL
, /* 0x19 */
263 SQLITE_FLOAT
, /* 0x1a */
264 SQLITE_NULL
, /* 0x1b */
265 SQLITE_INTEGER
, /* 0x1c */
266 SQLITE_NULL
, /* 0x1d */
267 SQLITE_INTEGER
, /* 0x1e */
268 SQLITE_NULL
, /* 0x1f */
270 return aType
[pVal
->flags
&MEM_AffMask
];
273 /* Return true if a parameter to xUpdate represents an unchanged column */
274 int sqlite3_value_nochange(sqlite3_value
*pVal
){
275 return (pVal
->flags
&(MEM_Null
|MEM_Zero
))==(MEM_Null
|MEM_Zero
);
278 /* Make a copy of an sqlite3_value object
280 sqlite3_value
*sqlite3_value_dup(const sqlite3_value
*pOrig
){
282 if( pOrig
==0 ) return 0;
283 pNew
= sqlite3_malloc( sizeof(*pNew
) );
284 if( pNew
==0 ) return 0;
285 memset(pNew
, 0, sizeof(*pNew
));
286 memcpy(pNew
, pOrig
, MEMCELLSIZE
);
287 pNew
->flags
&= ~MEM_Dyn
;
289 if( pNew
->flags
&(MEM_Str
|MEM_Blob
) ){
290 pNew
->flags
&= ~(MEM_Static
|MEM_Dyn
);
291 pNew
->flags
|= MEM_Ephem
;
292 if( sqlite3VdbeMemMakeWriteable(pNew
)!=SQLITE_OK
){
293 sqlite3ValueFree(pNew
);
300 /* Destroy an sqlite3_value object previously obtained from
301 ** sqlite3_value_dup().
303 void sqlite3_value_free(sqlite3_value
*pOld
){
304 sqlite3ValueFree(pOld
);
308 /**************************** sqlite3_result_ *******************************
309 ** The following routines are used by user-defined functions to specify
310 ** the function result.
312 ** The setStrOrError() function calls sqlite3VdbeMemSetStr() to store the
313 ** result as a string or blob but if the string or blob is too large, it
314 ** then sets the error code to SQLITE_TOOBIG
316 ** The invokeValueDestructor(P,X) routine invokes destructor function X()
317 ** on value P is not going to be used and need to be destroyed.
319 static void setResultStrOrError(
320 sqlite3_context
*pCtx
, /* Function context */
321 const char *z
, /* String pointer */
322 int n
, /* Bytes in string, or negative */
323 u8 enc
, /* Encoding of z. 0 for BLOBs */
324 void (*xDel
)(void*) /* Destructor function */
326 if( sqlite3VdbeMemSetStr(pCtx
->pOut
, z
, n
, enc
, xDel
)==SQLITE_TOOBIG
){
327 sqlite3_result_error_toobig(pCtx
);
330 static int invokeValueDestructor(
331 const void *p
, /* Value to destroy */
332 void (*xDel
)(void*), /* The destructor */
333 sqlite3_context
*pCtx
/* Set a SQLITE_TOOBIG error if no NULL */
335 assert( xDel
!=SQLITE_DYNAMIC
);
338 }else if( xDel
==SQLITE_TRANSIENT
){
343 if( pCtx
) sqlite3_result_error_toobig(pCtx
);
344 return SQLITE_TOOBIG
;
346 void sqlite3_result_blob(
347 sqlite3_context
*pCtx
,
353 assert( sqlite3_mutex_held(pCtx
->pOut
->db
->mutex
) );
354 setResultStrOrError(pCtx
, z
, n
, 0, xDel
);
356 void sqlite3_result_blob64(
357 sqlite3_context
*pCtx
,
362 assert( sqlite3_mutex_held(pCtx
->pOut
->db
->mutex
) );
363 assert( xDel
!=SQLITE_DYNAMIC
);
365 (void)invokeValueDestructor(z
, xDel
, pCtx
);
367 setResultStrOrError(pCtx
, z
, (int)n
, 0, xDel
);
370 void sqlite3_result_double(sqlite3_context
*pCtx
, double rVal
){
371 assert( sqlite3_mutex_held(pCtx
->pOut
->db
->mutex
) );
372 sqlite3VdbeMemSetDouble(pCtx
->pOut
, rVal
);
374 void sqlite3_result_error(sqlite3_context
*pCtx
, const char *z
, int n
){
375 assert( sqlite3_mutex_held(pCtx
->pOut
->db
->mutex
) );
376 pCtx
->isError
= SQLITE_ERROR
;
377 sqlite3VdbeMemSetStr(pCtx
->pOut
, z
, n
, SQLITE_UTF8
, SQLITE_TRANSIENT
);
379 #ifndef SQLITE_OMIT_UTF16
380 void sqlite3_result_error16(sqlite3_context
*pCtx
, const void *z
, int n
){
381 assert( sqlite3_mutex_held(pCtx
->pOut
->db
->mutex
) );
382 pCtx
->isError
= SQLITE_ERROR
;
383 sqlite3VdbeMemSetStr(pCtx
->pOut
, z
, n
, SQLITE_UTF16NATIVE
, SQLITE_TRANSIENT
);
386 void sqlite3_result_int(sqlite3_context
*pCtx
, int iVal
){
387 assert( sqlite3_mutex_held(pCtx
->pOut
->db
->mutex
) );
388 sqlite3VdbeMemSetInt64(pCtx
->pOut
, (i64
)iVal
);
390 void sqlite3_result_int64(sqlite3_context
*pCtx
, i64 iVal
){
391 assert( sqlite3_mutex_held(pCtx
->pOut
->db
->mutex
) );
392 sqlite3VdbeMemSetInt64(pCtx
->pOut
, iVal
);
394 void sqlite3_result_null(sqlite3_context
*pCtx
){
395 assert( sqlite3_mutex_held(pCtx
->pOut
->db
->mutex
) );
396 sqlite3VdbeMemSetNull(pCtx
->pOut
);
398 void sqlite3_result_pointer(
399 sqlite3_context
*pCtx
,
402 void (*xDestructor
)(void*)
404 Mem
*pOut
= pCtx
->pOut
;
405 assert( sqlite3_mutex_held(pOut
->db
->mutex
) );
406 sqlite3VdbeMemRelease(pOut
);
407 pOut
->flags
= MEM_Null
;
408 sqlite3VdbeMemSetPointer(pOut
, pPtr
, zPType
, xDestructor
);
410 void sqlite3_result_subtype(sqlite3_context
*pCtx
, unsigned int eSubtype
){
411 Mem
*pOut
= pCtx
->pOut
;
412 assert( sqlite3_mutex_held(pOut
->db
->mutex
) );
413 pOut
->eSubtype
= eSubtype
& 0xff;
414 pOut
->flags
|= MEM_Subtype
;
416 void sqlite3_result_text(
417 sqlite3_context
*pCtx
,
422 assert( sqlite3_mutex_held(pCtx
->pOut
->db
->mutex
) );
423 setResultStrOrError(pCtx
, z
, n
, SQLITE_UTF8
, xDel
);
425 void sqlite3_result_text64(
426 sqlite3_context
*pCtx
,
429 void (*xDel
)(void *),
432 assert( sqlite3_mutex_held(pCtx
->pOut
->db
->mutex
) );
433 assert( xDel
!=SQLITE_DYNAMIC
);
434 if( enc
==SQLITE_UTF16
) enc
= SQLITE_UTF16NATIVE
;
436 (void)invokeValueDestructor(z
, xDel
, pCtx
);
438 setResultStrOrError(pCtx
, z
, (int)n
, enc
, xDel
);
441 #ifndef SQLITE_OMIT_UTF16
442 void sqlite3_result_text16(
443 sqlite3_context
*pCtx
,
448 assert( sqlite3_mutex_held(pCtx
->pOut
->db
->mutex
) );
449 setResultStrOrError(pCtx
, z
, n
, SQLITE_UTF16NATIVE
, xDel
);
451 void sqlite3_result_text16be(
452 sqlite3_context
*pCtx
,
457 assert( sqlite3_mutex_held(pCtx
->pOut
->db
->mutex
) );
458 setResultStrOrError(pCtx
, z
, n
, SQLITE_UTF16BE
, xDel
);
460 void sqlite3_result_text16le(
461 sqlite3_context
*pCtx
,
466 assert( sqlite3_mutex_held(pCtx
->pOut
->db
->mutex
) );
467 setResultStrOrError(pCtx
, z
, n
, SQLITE_UTF16LE
, xDel
);
469 #endif /* SQLITE_OMIT_UTF16 */
470 void sqlite3_result_value(sqlite3_context
*pCtx
, sqlite3_value
*pValue
){
471 assert( sqlite3_mutex_held(pCtx
->pOut
->db
->mutex
) );
472 sqlite3VdbeMemCopy(pCtx
->pOut
, pValue
);
474 void sqlite3_result_zeroblob(sqlite3_context
*pCtx
, int n
){
475 assert( sqlite3_mutex_held(pCtx
->pOut
->db
->mutex
) );
476 sqlite3VdbeMemSetZeroBlob(pCtx
->pOut
, n
);
478 int sqlite3_result_zeroblob64(sqlite3_context
*pCtx
, u64 n
){
479 Mem
*pOut
= pCtx
->pOut
;
480 assert( sqlite3_mutex_held(pOut
->db
->mutex
) );
481 if( n
>(u64
)pOut
->db
->aLimit
[SQLITE_LIMIT_LENGTH
] ){
482 return SQLITE_TOOBIG
;
484 sqlite3VdbeMemSetZeroBlob(pCtx
->pOut
, (int)n
);
487 void sqlite3_result_error_code(sqlite3_context
*pCtx
, int errCode
){
488 pCtx
->isError
= errCode
? errCode
: -1;
490 if( pCtx
->pVdbe
) pCtx
->pVdbe
->rcApp
= errCode
;
492 if( pCtx
->pOut
->flags
& MEM_Null
){
493 sqlite3VdbeMemSetStr(pCtx
->pOut
, sqlite3ErrStr(errCode
), -1,
494 SQLITE_UTF8
, SQLITE_STATIC
);
498 /* Force an SQLITE_TOOBIG error. */
499 void sqlite3_result_error_toobig(sqlite3_context
*pCtx
){
500 assert( sqlite3_mutex_held(pCtx
->pOut
->db
->mutex
) );
501 pCtx
->isError
= SQLITE_TOOBIG
;
502 sqlite3VdbeMemSetStr(pCtx
->pOut
, "string or blob too big", -1,
503 SQLITE_UTF8
, SQLITE_STATIC
);
506 /* An SQLITE_NOMEM error. */
507 void sqlite3_result_error_nomem(sqlite3_context
*pCtx
){
508 assert( sqlite3_mutex_held(pCtx
->pOut
->db
->mutex
) );
509 sqlite3VdbeMemSetNull(pCtx
->pOut
);
510 pCtx
->isError
= SQLITE_NOMEM_BKPT
;
511 sqlite3OomFault(pCtx
->pOut
->db
);
515 ** This function is called after a transaction has been committed. It
516 ** invokes callbacks registered with sqlite3_wal_hook() as required.
518 static int doWalCallbacks(sqlite3
*db
){
520 #ifndef SQLITE_OMIT_WAL
522 for(i
=0; i
<db
->nDb
; i
++){
523 Btree
*pBt
= db
->aDb
[i
].pBt
;
526 sqlite3BtreeEnter(pBt
);
527 nEntry
= sqlite3PagerWalCallback(sqlite3BtreePager(pBt
));
528 sqlite3BtreeLeave(pBt
);
529 if( nEntry
>0 && db
->xWalCallback
&& rc
==SQLITE_OK
){
530 rc
= db
->xWalCallback(db
->pWalArg
, db
, db
->aDb
[i
].zDbSName
, nEntry
);
540 ** Execute the statement pStmt, either until a row of data is ready, the
541 ** statement is completely executed or an error occurs.
543 ** This routine implements the bulk of the logic behind the sqlite_step()
544 ** API. The only thing omitted is the automatic recompile if a
545 ** schema change has occurred. That detail is handled by the
546 ** outer sqlite3_step() wrapper procedure.
548 static int sqlite3Step(Vdbe
*p
){
553 if( p
->magic
!=VDBE_MAGIC_RUN
){
554 /* We used to require that sqlite3_reset() be called before retrying
555 ** sqlite3_step() after any error or after SQLITE_DONE. But beginning
556 ** with version 3.7.0, we changed this so that sqlite3_reset() would
557 ** be called automatically instead of throwing the SQLITE_MISUSE error.
558 ** This "automatic-reset" change is not technically an incompatibility,
559 ** since any application that receives an SQLITE_MISUSE is broken by
562 ** Nevertheless, some published applications that were originally written
563 ** for version 3.6.23 or earlier do in fact depend on SQLITE_MISUSE
564 ** returns, and those were broken by the automatic-reset change. As a
565 ** a work-around, the SQLITE_OMIT_AUTORESET compile-time restores the
566 ** legacy behavior of returning SQLITE_MISUSE for cases where the
567 ** previous sqlite3_step() returned something other than a SQLITE_LOCKED
568 ** or SQLITE_BUSY error.
570 #ifdef SQLITE_OMIT_AUTORESET
571 if( (rc
= p
->rc
&0xff)==SQLITE_BUSY
|| rc
==SQLITE_LOCKED
){
572 sqlite3_reset((sqlite3_stmt
*)p
);
574 return SQLITE_MISUSE_BKPT
;
577 sqlite3_reset((sqlite3_stmt
*)p
);
581 /* Check that malloc() has not failed. If it has, return early. */
583 if( db
->mallocFailed
){
584 p
->rc
= SQLITE_NOMEM
;
585 return SQLITE_NOMEM_BKPT
;
588 if( p
->pc
<0 && p
->expired
){
589 p
->rc
= SQLITE_SCHEMA
;
594 /* If there are no other statements currently running, then
595 ** reset the interrupt flag. This prevents a call to sqlite3_interrupt
596 ** from interrupting a statement that has not yet started.
598 if( db
->nVdbeActive
==0 ){
599 db
->u1
.isInterrupted
= 0;
602 assert( db
->nVdbeWrite
>0 || db
->autoCommit
==0
603 || (db
->nDeferredCons
==0 && db
->nDeferredImmCons
==0)
606 #ifndef SQLITE_OMIT_TRACE
607 if( (db
->mTrace
& (SQLITE_TRACE_PROFILE
|SQLITE_TRACE_XPROFILE
))!=0
608 && !db
->init
.busy
&& p
->zSql
){
609 sqlite3OsCurrentTimeInt64(db
->pVfs
, &p
->startTime
);
611 assert( p
->startTime
==0 );
616 if( p
->readOnly
==0 ) db
->nVdbeWrite
++;
617 if( p
->bIsReader
) db
->nVdbeRead
++;
621 p
->rcApp
= SQLITE_OK
;
623 #ifndef SQLITE_OMIT_EXPLAIN
625 rc
= sqlite3VdbeList(p
);
627 #endif /* SQLITE_OMIT_EXPLAIN */
630 rc
= sqlite3VdbeExec(p
);
634 if( rc
!=SQLITE_ROW
){
635 #ifndef SQLITE_OMIT_TRACE
636 /* If the statement completed successfully, invoke the profile callback */
637 checkProfileCallback(db
, p
);
640 if( rc
==SQLITE_DONE
&& db
->autoCommit
){
641 assert( p
->rc
==SQLITE_OK
);
642 p
->rc
= doWalCallbacks(db
);
643 if( p
->rc
!=SQLITE_OK
){
650 if( SQLITE_NOMEM
==sqlite3ApiExit(p
->db
, p
->rc
) ){
651 p
->rc
= SQLITE_NOMEM_BKPT
;
654 /* At this point local variable rc holds the value that should be
655 ** returned if this statement was compiled using the legacy
656 ** sqlite3_prepare() interface. According to the docs, this can only
657 ** be one of the values in the first assert() below. Variable p->rc
658 ** contains the value that would be returned if sqlite3_finalize()
659 ** were called on statement p.
661 assert( rc
==SQLITE_ROW
|| rc
==SQLITE_DONE
|| rc
==SQLITE_ERROR
662 || (rc
&0xff)==SQLITE_BUSY
|| rc
==SQLITE_MISUSE
664 assert( (p
->rc
!=SQLITE_ROW
&& p
->rc
!=SQLITE_DONE
) || p
->rc
==p
->rcApp
);
667 && (p
->prepFlags
& SQLITE_PREPARE_SAVESQL
)!=0
669 /* If this statement was prepared using saved SQL and an
670 ** error has occurred, then return the error code in p->rc to the
671 ** caller. Set the error code in the database handle to the same value.
673 rc
= sqlite3VdbeTransferError(p
);
675 return (rc
&db
->errMask
);
679 ** This is the top-level implementation of sqlite3_step(). Call
680 ** sqlite3Step() to do most of the work. If a schema error occurs,
681 ** call sqlite3Reprepare() and try again.
683 int sqlite3_step(sqlite3_stmt
*pStmt
){
684 int rc
= SQLITE_OK
; /* Result from sqlite3Step() */
685 Vdbe
*v
= (Vdbe
*)pStmt
; /* the prepared statement */
686 int cnt
= 0; /* Counter to prevent infinite loop of reprepares */
687 sqlite3
*db
; /* The database connection */
689 if( vdbeSafetyNotNull(v
) ){
690 return SQLITE_MISUSE_BKPT
;
693 sqlite3_mutex_enter(db
->mutex
);
695 while( (rc
= sqlite3Step(v
))==SQLITE_SCHEMA
696 && cnt
++ < SQLITE_MAX_SCHEMA_RETRY
){
698 rc
= sqlite3Reprepare(v
);
700 /* This case occurs after failing to recompile an sql statement.
701 ** The error message from the SQL compiler has already been loaded
702 ** into the database handle. This block copies the error message
703 ** from the database handle into the statement and sets the statement
704 ** program counter to 0 to ensure that when the statement is
705 ** finalized or reset the parser error message is available via
706 ** sqlite3_errmsg() and sqlite3_errcode().
708 const char *zErr
= (const char *)sqlite3_value_text(db
->pErr
);
709 sqlite3DbFree(db
, v
->zErrMsg
);
710 if( !db
->mallocFailed
){
711 v
->zErrMsg
= sqlite3DbStrDup(db
, zErr
);
712 v
->rc
= rc
= sqlite3ApiExit(db
, rc
);
715 v
->rc
= rc
= SQLITE_NOMEM_BKPT
;
719 sqlite3_reset(pStmt
);
720 if( savedPc
>=0 ) v
->doingRerun
= 1;
721 assert( v
->expired
==0 );
723 sqlite3_mutex_leave(db
->mutex
);
729 ** Extract the user data from a sqlite3_context structure and return a
732 void *sqlite3_user_data(sqlite3_context
*p
){
733 assert( p
&& p
->pFunc
);
734 return p
->pFunc
->pUserData
;
738 ** Extract the user data from a sqlite3_context structure and return a
741 ** IMPLEMENTATION-OF: R-46798-50301 The sqlite3_context_db_handle() interface
742 ** returns a copy of the pointer to the database connection (the 1st
743 ** parameter) of the sqlite3_create_function() and
744 ** sqlite3_create_function16() routines that originally registered the
745 ** application defined function.
747 sqlite3
*sqlite3_context_db_handle(sqlite3_context
*p
){
748 assert( p
&& p
->pOut
);
753 ** If this routine is invoked from within an xColumn method of a virtual
754 ** table, then it returns true if and only if the the call is during an
755 ** UPDATE operation and the value of the column will not be modified
758 ** If this routine is called from any context other than within the
759 ** xColumn method of a virtual table, then the return value is meaningless
762 ** Virtual table implements might use this routine to optimize their
763 ** performance by substituting a NULL result, or some other light-weight
764 ** value, as a signal to the xUpdate routine that the column is unchanged.
766 int sqlite3_vtab_nochange(sqlite3_context
*p
){
768 return sqlite3_value_nochange(p
->pOut
);
772 ** Return the current time for a statement. If the current time
773 ** is requested more than once within the same run of a single prepared
774 ** statement, the exact same time is returned for each invocation regardless
775 ** of the amount of time that elapses between invocations. In other words,
776 ** the time returned is always the time of the first call.
778 sqlite3_int64
sqlite3StmtCurrentTime(sqlite3_context
*p
){
780 #ifndef SQLITE_ENABLE_STAT3_OR_STAT4
781 sqlite3_int64
*piTime
= &p
->pVdbe
->iCurrentTime
;
782 assert( p
->pVdbe
!=0 );
784 sqlite3_int64 iTime
= 0;
785 sqlite3_int64
*piTime
= p
->pVdbe
!=0 ? &p
->pVdbe
->iCurrentTime
: &iTime
;
788 rc
= sqlite3OsCurrentTimeInt64(p
->pOut
->db
->pVfs
, piTime
);
789 if( rc
) *piTime
= 0;
795 ** Create a new aggregate context for p and return a pointer to
796 ** its pMem->z element.
798 static SQLITE_NOINLINE
void *createAggContext(sqlite3_context
*p
, int nByte
){
800 assert( (pMem
->flags
& MEM_Agg
)==0 );
802 sqlite3VdbeMemSetNull(pMem
);
805 sqlite3VdbeMemClearAndResize(pMem
, nByte
);
806 pMem
->flags
= MEM_Agg
;
807 pMem
->u
.pDef
= p
->pFunc
;
809 memset(pMem
->z
, 0, nByte
);
812 return (void*)pMem
->z
;
816 ** Allocate or return the aggregate context for a user function. A new
817 ** context is allocated on the first call. Subsequent calls return the
818 ** same context that was returned on prior calls.
820 void *sqlite3_aggregate_context(sqlite3_context
*p
, int nByte
){
821 assert( p
&& p
->pFunc
&& p
->pFunc
->xFinalize
);
822 assert( sqlite3_mutex_held(p
->pOut
->db
->mutex
) );
824 if( (p
->pMem
->flags
& MEM_Agg
)==0 ){
825 return createAggContext(p
, nByte
);
827 return (void*)p
->pMem
->z
;
832 ** Return the auxiliary data pointer, if any, for the iArg'th argument to
833 ** the user-function defined by pCtx.
835 ** The left-most argument is 0.
837 ** Undocumented behavior: If iArg is negative then access a cache of
838 ** auxiliary data pointers that is available to all functions within a
839 ** single prepared statement. The iArg values must match.
841 void *sqlite3_get_auxdata(sqlite3_context
*pCtx
, int iArg
){
844 assert( sqlite3_mutex_held(pCtx
->pOut
->db
->mutex
) );
845 #if SQLITE_ENABLE_STAT3_OR_STAT4
846 if( pCtx
->pVdbe
==0 ) return 0;
848 assert( pCtx
->pVdbe
!=0 );
850 for(pAuxData
=pCtx
->pVdbe
->pAuxData
; pAuxData
; pAuxData
=pAuxData
->pNextAux
){
851 if( pAuxData
->iAuxArg
==iArg
&& (pAuxData
->iAuxOp
==pCtx
->iOp
|| iArg
<0) ){
852 return pAuxData
->pAux
;
859 ** Set the auxiliary data pointer and delete function, for the iArg'th
860 ** argument to the user-function defined by pCtx. Any previous value is
861 ** deleted by calling the delete function specified when it was set.
863 ** The left-most argument is 0.
865 ** Undocumented behavior: If iArg is negative then make the data available
866 ** to all functions within the current prepared statement using iArg as an
869 void sqlite3_set_auxdata(
870 sqlite3_context
*pCtx
,
873 void (*xDelete
)(void*)
876 Vdbe
*pVdbe
= pCtx
->pVdbe
;
878 assert( sqlite3_mutex_held(pCtx
->pOut
->db
->mutex
) );
879 #ifdef SQLITE_ENABLE_STAT3_OR_STAT4
880 if( pVdbe
==0 ) goto failed
;
885 for(pAuxData
=pVdbe
->pAuxData
; pAuxData
; pAuxData
=pAuxData
->pNextAux
){
886 if( pAuxData
->iAuxArg
==iArg
&& (pAuxData
->iAuxOp
==pCtx
->iOp
|| iArg
<0) ){
891 pAuxData
= sqlite3DbMallocZero(pVdbe
->db
, sizeof(AuxData
));
892 if( !pAuxData
) goto failed
;
893 pAuxData
->iAuxOp
= pCtx
->iOp
;
894 pAuxData
->iAuxArg
= iArg
;
895 pAuxData
->pNextAux
= pVdbe
->pAuxData
;
896 pVdbe
->pAuxData
= pAuxData
;
897 if( pCtx
->isError
==0 ) pCtx
->isError
= -1;
898 }else if( pAuxData
->xDeleteAux
){
899 pAuxData
->xDeleteAux(pAuxData
->pAux
);
902 pAuxData
->pAux
= pAux
;
903 pAuxData
->xDeleteAux
= xDelete
;
912 #ifndef SQLITE_OMIT_DEPRECATED
914 ** Return the number of times the Step function of an aggregate has been
917 ** This function is deprecated. Do not use it for new code. It is
918 ** provide only to avoid breaking legacy code. New aggregate function
919 ** implementations should keep their own counts within their aggregate
922 int sqlite3_aggregate_count(sqlite3_context
*p
){
923 assert( p
&& p
->pMem
&& p
->pFunc
&& p
->pFunc
->xFinalize
);
929 ** Return the number of columns in the result set for the statement pStmt.
931 int sqlite3_column_count(sqlite3_stmt
*pStmt
){
932 Vdbe
*pVm
= (Vdbe
*)pStmt
;
933 return pVm
? pVm
->nResColumn
: 0;
937 ** Return the number of values available from the current row of the
938 ** currently executing statement pStmt.
940 int sqlite3_data_count(sqlite3_stmt
*pStmt
){
941 Vdbe
*pVm
= (Vdbe
*)pStmt
;
942 if( pVm
==0 || pVm
->pResultSet
==0 ) return 0;
943 return pVm
->nResColumn
;
947 ** Return a pointer to static memory containing an SQL NULL value.
949 static const Mem
*columnNullValue(void){
950 /* Even though the Mem structure contains an element
951 ** of type i64, on certain architectures (x86) with certain compiler
952 ** switches (-Os), gcc may align this Mem object on a 4-byte boundary
953 ** instead of an 8-byte one. This all works fine, except that when
954 ** running with SQLITE_DEBUG defined the SQLite code sometimes assert()s
955 ** that a Mem structure is located on an 8-byte boundary. To prevent
956 ** these assert()s from failing, when building with SQLITE_DEBUG defined
957 ** using gcc, we force nullMem to be 8-byte aligned using the magical
958 ** __attribute__((aligned(8))) macro. */
959 static const Mem nullMem
960 #if defined(SQLITE_DEBUG) && defined(__GNUC__)
961 __attribute__((aligned(8)))
965 /* .flags = */ (u16
)MEM_Null
,
967 /* .eSubtype = */ (u8
)0,
970 /* .zMalloc = */ (char*)0,
971 /* .szMalloc = */ (int)0,
972 /* .uTemp = */ (u32
)0,
973 /* .db = */ (sqlite3
*)0,
974 /* .xDel = */ (void(*)(void*))0,
976 /* .pScopyFrom = */ (Mem
*)0,
977 /* .mScopyFlags= */ 0,
984 ** Check to see if column iCol of the given statement is valid. If
985 ** it is, return a pointer to the Mem for the value of that column.
986 ** If iCol is not valid, return a pointer to a Mem which has a value
989 static Mem
*columnMem(sqlite3_stmt
*pStmt
, int i
){
994 if( pVm
==0 ) return (Mem
*)columnNullValue();
996 sqlite3_mutex_enter(pVm
->db
->mutex
);
997 if( pVm
->pResultSet
!=0 && i
<pVm
->nResColumn
&& i
>=0 ){
998 pOut
= &pVm
->pResultSet
[i
];
1000 sqlite3Error(pVm
->db
, SQLITE_RANGE
);
1001 pOut
= (Mem
*)columnNullValue();
1007 ** This function is called after invoking an sqlite3_value_XXX function on a
1008 ** column value (i.e. a value returned by evaluating an SQL expression in the
1009 ** select list of a SELECT statement) that may cause a malloc() failure. If
1010 ** malloc() has failed, the threads mallocFailed flag is cleared and the result
1011 ** code of statement pStmt set to SQLITE_NOMEM.
1013 ** Specifically, this is called from within:
1015 ** sqlite3_column_int()
1016 ** sqlite3_column_int64()
1017 ** sqlite3_column_text()
1018 ** sqlite3_column_text16()
1019 ** sqlite3_column_real()
1020 ** sqlite3_column_bytes()
1021 ** sqlite3_column_bytes16()
1022 ** sqiite3_column_blob()
1024 static void columnMallocFailure(sqlite3_stmt
*pStmt
)
1026 /* If malloc() failed during an encoding conversion within an
1027 ** sqlite3_column_XXX API, then set the return code of the statement to
1028 ** SQLITE_NOMEM. The next call to _step() (if any) will return SQLITE_ERROR
1029 ** and _finalize() will return NOMEM.
1031 Vdbe
*p
= (Vdbe
*)pStmt
;
1034 assert( sqlite3_mutex_held(p
->db
->mutex
) );
1035 p
->rc
= sqlite3ApiExit(p
->db
, p
->rc
);
1036 sqlite3_mutex_leave(p
->db
->mutex
);
1040 /**************************** sqlite3_column_ *******************************
1041 ** The following routines are used to access elements of the current row
1042 ** in the result set.
1044 const void *sqlite3_column_blob(sqlite3_stmt
*pStmt
, int i
){
1046 val
= sqlite3_value_blob( columnMem(pStmt
,i
) );
1047 /* Even though there is no encoding conversion, value_blob() might
1048 ** need to call malloc() to expand the result of a zeroblob()
1051 columnMallocFailure(pStmt
);
1054 int sqlite3_column_bytes(sqlite3_stmt
*pStmt
, int i
){
1055 int val
= sqlite3_value_bytes( columnMem(pStmt
,i
) );
1056 columnMallocFailure(pStmt
);
1059 int sqlite3_column_bytes16(sqlite3_stmt
*pStmt
, int i
){
1060 int val
= sqlite3_value_bytes16( columnMem(pStmt
,i
) );
1061 columnMallocFailure(pStmt
);
1064 double sqlite3_column_double(sqlite3_stmt
*pStmt
, int i
){
1065 double val
= sqlite3_value_double( columnMem(pStmt
,i
) );
1066 columnMallocFailure(pStmt
);
1069 int sqlite3_column_int(sqlite3_stmt
*pStmt
, int i
){
1070 int val
= sqlite3_value_int( columnMem(pStmt
,i
) );
1071 columnMallocFailure(pStmt
);
1074 sqlite_int64
sqlite3_column_int64(sqlite3_stmt
*pStmt
, int i
){
1075 sqlite_int64 val
= sqlite3_value_int64( columnMem(pStmt
,i
) );
1076 columnMallocFailure(pStmt
);
1079 const unsigned char *sqlite3_column_text(sqlite3_stmt
*pStmt
, int i
){
1080 const unsigned char *val
= sqlite3_value_text( columnMem(pStmt
,i
) );
1081 columnMallocFailure(pStmt
);
1084 sqlite3_value
*sqlite3_column_value(sqlite3_stmt
*pStmt
, int i
){
1085 Mem
*pOut
= columnMem(pStmt
, i
);
1086 if( pOut
->flags
&MEM_Static
){
1087 pOut
->flags
&= ~MEM_Static
;
1088 pOut
->flags
|= MEM_Ephem
;
1090 columnMallocFailure(pStmt
);
1091 return (sqlite3_value
*)pOut
;
1093 #ifndef SQLITE_OMIT_UTF16
1094 const void *sqlite3_column_text16(sqlite3_stmt
*pStmt
, int i
){
1095 const void *val
= sqlite3_value_text16( columnMem(pStmt
,i
) );
1096 columnMallocFailure(pStmt
);
1099 #endif /* SQLITE_OMIT_UTF16 */
1100 int sqlite3_column_type(sqlite3_stmt
*pStmt
, int i
){
1101 int iType
= sqlite3_value_type( columnMem(pStmt
,i
) );
1102 columnMallocFailure(pStmt
);
1107 ** Convert the N-th element of pStmt->pColName[] into a string using
1108 ** xFunc() then return that string. If N is out of range, return 0.
1110 ** There are up to 5 names for each column. useType determines which
1111 ** name is returned. Here are the names:
1113 ** 0 The column name as it should be displayed for output
1114 ** 1 The datatype name for the column
1115 ** 2 The name of the database that the column derives from
1116 ** 3 The name of the table that the column derives from
1117 ** 4 The name of the table column that the result column derives from
1119 ** If the result is not a simple column reference (if it is an expression
1120 ** or a constant) then useTypes 2, 3, and 4 return NULL.
1122 static const void *columnName(
1123 sqlite3_stmt
*pStmt
,
1125 const void *(*xFunc
)(Mem
*),
1132 #ifdef SQLITE_ENABLE_API_ARMOR
1134 (void)SQLITE_MISUSE_BKPT
;
1142 n
= sqlite3_column_count(pStmt
);
1145 sqlite3_mutex_enter(db
->mutex
);
1146 assert( db
->mallocFailed
==0 );
1147 ret
= xFunc(&p
->aColName
[N
]);
1148 /* A malloc may have failed inside of the xFunc() call. If this
1149 ** is the case, clear the mallocFailed flag and return NULL.
1151 if( db
->mallocFailed
){
1152 sqlite3OomClear(db
);
1155 sqlite3_mutex_leave(db
->mutex
);
1161 ** Return the name of the Nth column of the result set returned by SQL
1164 const char *sqlite3_column_name(sqlite3_stmt
*pStmt
, int N
){
1166 pStmt
, N
, (const void*(*)(Mem
*))sqlite3_value_text
, COLNAME_NAME
);
1168 #ifndef SQLITE_OMIT_UTF16
1169 const void *sqlite3_column_name16(sqlite3_stmt
*pStmt
, int N
){
1171 pStmt
, N
, (const void*(*)(Mem
*))sqlite3_value_text16
, COLNAME_NAME
);
1176 ** Constraint: If you have ENABLE_COLUMN_METADATA then you must
1177 ** not define OMIT_DECLTYPE.
1179 #if defined(SQLITE_OMIT_DECLTYPE) && defined(SQLITE_ENABLE_COLUMN_METADATA)
1180 # error "Must not define both SQLITE_OMIT_DECLTYPE \
1181 and SQLITE_ENABLE_COLUMN_METADATA"
1184 #ifndef SQLITE_OMIT_DECLTYPE
1186 ** Return the column declaration type (if applicable) of the 'i'th column
1187 ** of the result set of SQL statement pStmt.
1189 const char *sqlite3_column_decltype(sqlite3_stmt
*pStmt
, int N
){
1191 pStmt
, N
, (const void*(*)(Mem
*))sqlite3_value_text
, COLNAME_DECLTYPE
);
1193 #ifndef SQLITE_OMIT_UTF16
1194 const void *sqlite3_column_decltype16(sqlite3_stmt
*pStmt
, int N
){
1196 pStmt
, N
, (const void*(*)(Mem
*))sqlite3_value_text16
, COLNAME_DECLTYPE
);
1198 #endif /* SQLITE_OMIT_UTF16 */
1199 #endif /* SQLITE_OMIT_DECLTYPE */
1201 #ifdef SQLITE_ENABLE_COLUMN_METADATA
1203 ** Return the name of the database from which a result column derives.
1204 ** NULL is returned if the result column is an expression or constant or
1205 ** anything else which is not an unambiguous reference to a database column.
1207 const char *sqlite3_column_database_name(sqlite3_stmt
*pStmt
, int N
){
1209 pStmt
, N
, (const void*(*)(Mem
*))sqlite3_value_text
, COLNAME_DATABASE
);
1211 #ifndef SQLITE_OMIT_UTF16
1212 const void *sqlite3_column_database_name16(sqlite3_stmt
*pStmt
, int N
){
1214 pStmt
, N
, (const void*(*)(Mem
*))sqlite3_value_text16
, COLNAME_DATABASE
);
1216 #endif /* SQLITE_OMIT_UTF16 */
1219 ** Return the name of the table from which a result column derives.
1220 ** NULL is returned if the result column is an expression or constant or
1221 ** anything else which is not an unambiguous reference to a database column.
1223 const char *sqlite3_column_table_name(sqlite3_stmt
*pStmt
, int N
){
1225 pStmt
, N
, (const void*(*)(Mem
*))sqlite3_value_text
, COLNAME_TABLE
);
1227 #ifndef SQLITE_OMIT_UTF16
1228 const void *sqlite3_column_table_name16(sqlite3_stmt
*pStmt
, int N
){
1230 pStmt
, N
, (const void*(*)(Mem
*))sqlite3_value_text16
, COLNAME_TABLE
);
1232 #endif /* SQLITE_OMIT_UTF16 */
1235 ** Return the name of the table column from which a result column derives.
1236 ** NULL is returned if the result column is an expression or constant or
1237 ** anything else which is not an unambiguous reference to a database column.
1239 const char *sqlite3_column_origin_name(sqlite3_stmt
*pStmt
, int N
){
1241 pStmt
, N
, (const void*(*)(Mem
*))sqlite3_value_text
, COLNAME_COLUMN
);
1243 #ifndef SQLITE_OMIT_UTF16
1244 const void *sqlite3_column_origin_name16(sqlite3_stmt
*pStmt
, int N
){
1246 pStmt
, N
, (const void*(*)(Mem
*))sqlite3_value_text16
, COLNAME_COLUMN
);
1248 #endif /* SQLITE_OMIT_UTF16 */
1249 #endif /* SQLITE_ENABLE_COLUMN_METADATA */
1252 /******************************* sqlite3_bind_ ***************************
1254 ** Routines used to attach values to wildcards in a compiled SQL statement.
1257 ** Unbind the value bound to variable i in virtual machine p. This is the
1258 ** the same as binding a NULL value to the column. If the "i" parameter is
1259 ** out of range, then SQLITE_RANGE is returned. Othewise SQLITE_OK.
1261 ** A successful evaluation of this routine acquires the mutex on p.
1262 ** the mutex is released if any kind of error occurs.
1264 ** The error code stored in database p->db is overwritten with the return
1265 ** value in any case.
1267 static int vdbeUnbind(Vdbe
*p
, int i
){
1269 if( vdbeSafetyNotNull(p
) ){
1270 return SQLITE_MISUSE_BKPT
;
1272 sqlite3_mutex_enter(p
->db
->mutex
);
1273 if( p
->magic
!=VDBE_MAGIC_RUN
|| p
->pc
>=0 ){
1274 sqlite3Error(p
->db
, SQLITE_MISUSE
);
1275 sqlite3_mutex_leave(p
->db
->mutex
);
1276 sqlite3_log(SQLITE_MISUSE
,
1277 "bind on a busy prepared statement: [%s]", p
->zSql
);
1278 return SQLITE_MISUSE_BKPT
;
1280 if( i
<1 || i
>p
->nVar
){
1281 sqlite3Error(p
->db
, SQLITE_RANGE
);
1282 sqlite3_mutex_leave(p
->db
->mutex
);
1283 return SQLITE_RANGE
;
1287 sqlite3VdbeMemRelease(pVar
);
1288 pVar
->flags
= MEM_Null
;
1289 p
->db
->errCode
= SQLITE_OK
;
1291 /* If the bit corresponding to this variable in Vdbe.expmask is set, then
1292 ** binding a new value to this variable invalidates the current query plan.
1294 ** IMPLEMENTATION-OF: R-48440-37595 If the specific value bound to host
1295 ** parameter in the WHERE clause might influence the choice of query plan
1296 ** for a statement, then the statement will be automatically recompiled,
1297 ** as if there had been a schema change, on the first sqlite3_step() call
1298 ** following any change to the bindings of that parameter.
1300 assert( (p
->prepFlags
& SQLITE_PREPARE_SAVESQL
)!=0 || p
->expmask
==0 );
1301 if( p
->expmask
!=0 && (p
->expmask
& (i
>=31 ? 0x80000000 : (u32
)1<<i
))!=0 ){
1308 ** Bind a text or BLOB value.
1310 static int bindText(
1311 sqlite3_stmt
*pStmt
, /* The statement to bind against */
1312 int i
, /* Index of the parameter to bind */
1313 const void *zData
, /* Pointer to the data to be bound */
1314 int nData
, /* Number of bytes of data to be bound */
1315 void (*xDel
)(void*), /* Destructor for the data */
1316 u8 encoding
/* Encoding for the data */
1318 Vdbe
*p
= (Vdbe
*)pStmt
;
1322 rc
= vdbeUnbind(p
, i
);
1323 if( rc
==SQLITE_OK
){
1325 pVar
= &p
->aVar
[i
-1];
1326 rc
= sqlite3VdbeMemSetStr(pVar
, zData
, nData
, encoding
, xDel
);
1327 if( rc
==SQLITE_OK
&& encoding
!=0 ){
1328 rc
= sqlite3VdbeChangeEncoding(pVar
, ENC(p
->db
));
1331 sqlite3Error(p
->db
, rc
);
1332 rc
= sqlite3ApiExit(p
->db
, rc
);
1335 sqlite3_mutex_leave(p
->db
->mutex
);
1336 }else if( xDel
!=SQLITE_STATIC
&& xDel
!=SQLITE_TRANSIENT
){
1344 ** Bind a blob value to an SQL statement variable.
1346 int sqlite3_bind_blob(
1347 sqlite3_stmt
*pStmt
,
1353 #ifdef SQLITE_ENABLE_API_ARMOR
1354 if( nData
<0 ) return SQLITE_MISUSE_BKPT
;
1356 return bindText(pStmt
, i
, zData
, nData
, xDel
, 0);
1358 int sqlite3_bind_blob64(
1359 sqlite3_stmt
*pStmt
,
1362 sqlite3_uint64 nData
,
1365 assert( xDel
!=SQLITE_DYNAMIC
);
1366 if( nData
>0x7fffffff ){
1367 return invokeValueDestructor(zData
, xDel
, 0);
1369 return bindText(pStmt
, i
, zData
, (int)nData
, xDel
, 0);
1372 int sqlite3_bind_double(sqlite3_stmt
*pStmt
, int i
, double rValue
){
1374 Vdbe
*p
= (Vdbe
*)pStmt
;
1375 rc
= vdbeUnbind(p
, i
);
1376 if( rc
==SQLITE_OK
){
1377 sqlite3VdbeMemSetDouble(&p
->aVar
[i
-1], rValue
);
1378 sqlite3_mutex_leave(p
->db
->mutex
);
1382 int sqlite3_bind_int(sqlite3_stmt
*p
, int i
, int iValue
){
1383 return sqlite3_bind_int64(p
, i
, (i64
)iValue
);
1385 int sqlite3_bind_int64(sqlite3_stmt
*pStmt
, int i
, sqlite_int64 iValue
){
1387 Vdbe
*p
= (Vdbe
*)pStmt
;
1388 rc
= vdbeUnbind(p
, i
);
1389 if( rc
==SQLITE_OK
){
1390 sqlite3VdbeMemSetInt64(&p
->aVar
[i
-1], iValue
);
1391 sqlite3_mutex_leave(p
->db
->mutex
);
1395 int sqlite3_bind_null(sqlite3_stmt
*pStmt
, int i
){
1397 Vdbe
*p
= (Vdbe
*)pStmt
;
1398 rc
= vdbeUnbind(p
, i
);
1399 if( rc
==SQLITE_OK
){
1400 sqlite3_mutex_leave(p
->db
->mutex
);
1404 int sqlite3_bind_pointer(
1405 sqlite3_stmt
*pStmt
,
1408 const char *zPTtype
,
1409 void (*xDestructor
)(void*)
1412 Vdbe
*p
= (Vdbe
*)pStmt
;
1413 rc
= vdbeUnbind(p
, i
);
1414 if( rc
==SQLITE_OK
){
1415 sqlite3VdbeMemSetPointer(&p
->aVar
[i
-1], pPtr
, zPTtype
, xDestructor
);
1416 sqlite3_mutex_leave(p
->db
->mutex
);
1417 }else if( xDestructor
){
1422 int sqlite3_bind_text(
1423 sqlite3_stmt
*pStmt
,
1429 return bindText(pStmt
, i
, zData
, nData
, xDel
, SQLITE_UTF8
);
1431 int sqlite3_bind_text64(
1432 sqlite3_stmt
*pStmt
,
1435 sqlite3_uint64 nData
,
1436 void (*xDel
)(void*),
1439 assert( xDel
!=SQLITE_DYNAMIC
);
1440 if( nData
>0x7fffffff ){
1441 return invokeValueDestructor(zData
, xDel
, 0);
1443 if( enc
==SQLITE_UTF16
) enc
= SQLITE_UTF16NATIVE
;
1444 return bindText(pStmt
, i
, zData
, (int)nData
, xDel
, enc
);
1447 #ifndef SQLITE_OMIT_UTF16
1448 int sqlite3_bind_text16(
1449 sqlite3_stmt
*pStmt
,
1455 return bindText(pStmt
, i
, zData
, nData
, xDel
, SQLITE_UTF16NATIVE
);
1457 #endif /* SQLITE_OMIT_UTF16 */
1458 int sqlite3_bind_value(sqlite3_stmt
*pStmt
, int i
, const sqlite3_value
*pValue
){
1460 switch( sqlite3_value_type((sqlite3_value
*)pValue
) ){
1461 case SQLITE_INTEGER
: {
1462 rc
= sqlite3_bind_int64(pStmt
, i
, pValue
->u
.i
);
1465 case SQLITE_FLOAT
: {
1466 rc
= sqlite3_bind_double(pStmt
, i
, pValue
->u
.r
);
1470 if( pValue
->flags
& MEM_Zero
){
1471 rc
= sqlite3_bind_zeroblob(pStmt
, i
, pValue
->u
.nZero
);
1473 rc
= sqlite3_bind_blob(pStmt
, i
, pValue
->z
, pValue
->n
,SQLITE_TRANSIENT
);
1478 rc
= bindText(pStmt
,i
, pValue
->z
, pValue
->n
, SQLITE_TRANSIENT
,
1483 rc
= sqlite3_bind_null(pStmt
, i
);
1489 int sqlite3_bind_zeroblob(sqlite3_stmt
*pStmt
, int i
, int n
){
1491 Vdbe
*p
= (Vdbe
*)pStmt
;
1492 rc
= vdbeUnbind(p
, i
);
1493 if( rc
==SQLITE_OK
){
1494 sqlite3VdbeMemSetZeroBlob(&p
->aVar
[i
-1], n
);
1495 sqlite3_mutex_leave(p
->db
->mutex
);
1499 int sqlite3_bind_zeroblob64(sqlite3_stmt
*pStmt
, int i
, sqlite3_uint64 n
){
1501 Vdbe
*p
= (Vdbe
*)pStmt
;
1502 sqlite3_mutex_enter(p
->db
->mutex
);
1503 if( n
>(u64
)p
->db
->aLimit
[SQLITE_LIMIT_LENGTH
] ){
1506 assert( (n
& 0x7FFFFFFF)==n
);
1507 rc
= sqlite3_bind_zeroblob(pStmt
, i
, n
);
1509 rc
= sqlite3ApiExit(p
->db
, rc
);
1510 sqlite3_mutex_leave(p
->db
->mutex
);
1515 ** Return the number of wildcards that can be potentially bound to.
1516 ** This routine is added to support DBD::SQLite.
1518 int sqlite3_bind_parameter_count(sqlite3_stmt
*pStmt
){
1519 Vdbe
*p
= (Vdbe
*)pStmt
;
1520 return p
? p
->nVar
: 0;
1524 ** Return the name of a wildcard parameter. Return NULL if the index
1525 ** is out of range or if the wildcard is unnamed.
1527 ** The result is always UTF-8.
1529 const char *sqlite3_bind_parameter_name(sqlite3_stmt
*pStmt
, int i
){
1530 Vdbe
*p
= (Vdbe
*)pStmt
;
1531 if( p
==0 ) return 0;
1532 return sqlite3VListNumToName(p
->pVList
, i
);
1536 ** Given a wildcard parameter name, return the index of the variable
1537 ** with that name. If there is no variable with the given name,
1540 int sqlite3VdbeParameterIndex(Vdbe
*p
, const char *zName
, int nName
){
1541 if( p
==0 || zName
==0 ) return 0;
1542 return sqlite3VListNameToNum(p
->pVList
, zName
, nName
);
1544 int sqlite3_bind_parameter_index(sqlite3_stmt
*pStmt
, const char *zName
){
1545 return sqlite3VdbeParameterIndex((Vdbe
*)pStmt
, zName
, sqlite3Strlen30(zName
));
1549 ** Transfer all bindings from the first statement over to the second.
1551 int sqlite3TransferBindings(sqlite3_stmt
*pFromStmt
, sqlite3_stmt
*pToStmt
){
1552 Vdbe
*pFrom
= (Vdbe
*)pFromStmt
;
1553 Vdbe
*pTo
= (Vdbe
*)pToStmt
;
1555 assert( pTo
->db
==pFrom
->db
);
1556 assert( pTo
->nVar
==pFrom
->nVar
);
1557 sqlite3_mutex_enter(pTo
->db
->mutex
);
1558 for(i
=0; i
<pFrom
->nVar
; i
++){
1559 sqlite3VdbeMemMove(&pTo
->aVar
[i
], &pFrom
->aVar
[i
]);
1561 sqlite3_mutex_leave(pTo
->db
->mutex
);
1565 #ifndef SQLITE_OMIT_DEPRECATED
1567 ** Deprecated external interface. Internal/core SQLite code
1568 ** should call sqlite3TransferBindings.
1570 ** It is misuse to call this routine with statements from different
1571 ** database connections. But as this is a deprecated interface, we
1572 ** will not bother to check for that condition.
1574 ** If the two statements contain a different number of bindings, then
1575 ** an SQLITE_ERROR is returned. Nothing else can go wrong, so otherwise
1576 ** SQLITE_OK is returned.
1578 int sqlite3_transfer_bindings(sqlite3_stmt
*pFromStmt
, sqlite3_stmt
*pToStmt
){
1579 Vdbe
*pFrom
= (Vdbe
*)pFromStmt
;
1580 Vdbe
*pTo
= (Vdbe
*)pToStmt
;
1581 if( pFrom
->nVar
!=pTo
->nVar
){
1582 return SQLITE_ERROR
;
1584 assert( (pTo
->prepFlags
& SQLITE_PREPARE_SAVESQL
)!=0 || pTo
->expmask
==0 );
1588 assert( (pFrom
->prepFlags
& SQLITE_PREPARE_SAVESQL
)!=0 || pFrom
->expmask
==0 );
1589 if( pFrom
->expmask
){
1592 return sqlite3TransferBindings(pFromStmt
, pToStmt
);
1597 ** Return the sqlite3* database handle to which the prepared statement given
1598 ** in the argument belongs. This is the same database handle that was
1599 ** the first argument to the sqlite3_prepare() that was used to create
1600 ** the statement in the first place.
1602 sqlite3
*sqlite3_db_handle(sqlite3_stmt
*pStmt
){
1603 return pStmt
? ((Vdbe
*)pStmt
)->db
: 0;
1607 ** Return true if the prepared statement is guaranteed to not modify the
1610 int sqlite3_stmt_readonly(sqlite3_stmt
*pStmt
){
1611 return pStmt
? ((Vdbe
*)pStmt
)->readOnly
: 1;
1615 ** Return true if the prepared statement is in need of being reset.
1617 int sqlite3_stmt_busy(sqlite3_stmt
*pStmt
){
1618 Vdbe
*v
= (Vdbe
*)pStmt
;
1619 return v
!=0 && v
->magic
==VDBE_MAGIC_RUN
&& v
->pc
>=0;
1623 ** Return a pointer to the next prepared statement after pStmt associated
1624 ** with database connection pDb. If pStmt is NULL, return the first
1625 ** prepared statement for the database connection. Return NULL if there
1628 sqlite3_stmt
*sqlite3_next_stmt(sqlite3
*pDb
, sqlite3_stmt
*pStmt
){
1629 sqlite3_stmt
*pNext
;
1630 #ifdef SQLITE_ENABLE_API_ARMOR
1631 if( !sqlite3SafetyCheckOk(pDb
) ){
1632 (void)SQLITE_MISUSE_BKPT
;
1636 sqlite3_mutex_enter(pDb
->mutex
);
1638 pNext
= (sqlite3_stmt
*)pDb
->pVdbe
;
1640 pNext
= (sqlite3_stmt
*)((Vdbe
*)pStmt
)->pNext
;
1642 sqlite3_mutex_leave(pDb
->mutex
);
1647 ** Return the value of a status counter for a prepared statement
1649 int sqlite3_stmt_status(sqlite3_stmt
*pStmt
, int op
, int resetFlag
){
1650 Vdbe
*pVdbe
= (Vdbe
*)pStmt
;
1652 #ifdef SQLITE_ENABLE_API_ARMOR
1654 || (op
!=SQLITE_STMTSTATUS_MEMUSED
&& (op
<0||op
>=ArraySize(pVdbe
->aCounter
)))
1656 (void)SQLITE_MISUSE_BKPT
;
1660 if( op
==SQLITE_STMTSTATUS_MEMUSED
){
1661 sqlite3
*db
= pVdbe
->db
;
1662 sqlite3_mutex_enter(db
->mutex
);
1664 db
->pnBytesFreed
= (int*)&v
;
1665 sqlite3VdbeClearObject(db
, pVdbe
);
1666 sqlite3DbFree(db
, pVdbe
);
1667 db
->pnBytesFreed
= 0;
1668 sqlite3_mutex_leave(db
->mutex
);
1670 v
= pVdbe
->aCounter
[op
];
1671 if( resetFlag
) pVdbe
->aCounter
[op
] = 0;
1677 ** Return the SQL associated with a prepared statement
1679 const char *sqlite3_sql(sqlite3_stmt
*pStmt
){
1680 Vdbe
*p
= (Vdbe
*)pStmt
;
1681 return p
? p
->zSql
: 0;
1685 ** Return the SQL associated with a prepared statement with
1686 ** bound parameters expanded. Space to hold the returned string is
1687 ** obtained from sqlite3_malloc(). The caller is responsible for
1688 ** freeing the returned string by passing it to sqlite3_free().
1690 ** The SQLITE_TRACE_SIZE_LIMIT puts an upper bound on the size of
1691 ** expanded bound parameters.
1693 char *sqlite3_expanded_sql(sqlite3_stmt
*pStmt
){
1694 #ifdef SQLITE_OMIT_TRACE
1698 const char *zSql
= sqlite3_sql(pStmt
);
1700 Vdbe
*p
= (Vdbe
*)pStmt
;
1701 sqlite3_mutex_enter(p
->db
->mutex
);
1702 z
= sqlite3VdbeExpandSql(p
, zSql
);
1703 sqlite3_mutex_leave(p
->db
->mutex
);
1709 #ifdef SQLITE_ENABLE_NORMALIZE
1711 ** Return the normalized SQL associated with a prepared statement.
1713 const char *sqlite3_normalized_sql(sqlite3_stmt
*pStmt
){
1714 Vdbe
*p
= (Vdbe
*)pStmt
;
1715 if( p
==0 ) return 0;
1716 if( p
->zNormSql
==0 && ALWAYS(p
->zSql
!=0) ){
1717 sqlite3_mutex_enter(p
->db
->mutex
);
1718 p
->zNormSql
= sqlite3Normalize(p
, p
->zSql
);
1719 sqlite3_mutex_leave(p
->db
->mutex
);
1723 #endif /* SQLITE_ENABLE_NORMALIZE */
1725 #ifdef SQLITE_ENABLE_PREUPDATE_HOOK
1727 ** Allocate and populate an UnpackedRecord structure based on the serialized
1728 ** record in nKey/pKey. Return a pointer to the new UnpackedRecord structure
1729 ** if successful, or a NULL pointer if an OOM error is encountered.
1731 static UnpackedRecord
*vdbeUnpackRecord(
1736 UnpackedRecord
*pRet
; /* Return value */
1738 pRet
= sqlite3VdbeAllocUnpackedRecord(pKeyInfo
);
1740 memset(pRet
->aMem
, 0, sizeof(Mem
)*(pKeyInfo
->nKeyField
+1));
1741 sqlite3VdbeRecordUnpack(pKeyInfo
, nKey
, pKey
, pRet
);
1747 ** This function is called from within a pre-update callback to retrieve
1748 ** a field of the row currently being updated or deleted.
1750 int sqlite3_preupdate_old(sqlite3
*db
, int iIdx
, sqlite3_value
**ppValue
){
1751 PreUpdate
*p
= db
->pPreUpdate
;
1755 /* Test that this call is being made from within an SQLITE_DELETE or
1756 ** SQLITE_UPDATE pre-update callback, and that iIdx is within range. */
1757 if( !p
|| p
->op
==SQLITE_INSERT
){
1758 rc
= SQLITE_MISUSE_BKPT
;
1759 goto preupdate_old_out
;
1762 iIdx
= sqlite3ColumnOfIndex(p
->pPk
, iIdx
);
1764 if( iIdx
>=p
->pCsr
->nField
|| iIdx
<0 ){
1766 goto preupdate_old_out
;
1769 /* If the old.* record has not yet been loaded into memory, do so now. */
1770 if( p
->pUnpacked
==0 ){
1774 nRec
= sqlite3BtreePayloadSize(p
->pCsr
->uc
.pCursor
);
1775 aRec
= sqlite3DbMallocRaw(db
, nRec
);
1776 if( !aRec
) goto preupdate_old_out
;
1777 rc
= sqlite3BtreePayload(p
->pCsr
->uc
.pCursor
, 0, nRec
, aRec
);
1778 if( rc
==SQLITE_OK
){
1779 p
->pUnpacked
= vdbeUnpackRecord(&p
->keyinfo
, nRec
, aRec
);
1780 if( !p
->pUnpacked
) rc
= SQLITE_NOMEM
;
1782 if( rc
!=SQLITE_OK
){
1783 sqlite3DbFree(db
, aRec
);
1784 goto preupdate_old_out
;
1789 pMem
= *ppValue
= &p
->pUnpacked
->aMem
[iIdx
];
1790 if( iIdx
==p
->pTab
->iPKey
){
1791 sqlite3VdbeMemSetInt64(pMem
, p
->iKey1
);
1792 }else if( iIdx
>=p
->pUnpacked
->nField
){
1793 *ppValue
= (sqlite3_value
*)columnNullValue();
1794 }else if( p
->pTab
->aCol
[iIdx
].affinity
==SQLITE_AFF_REAL
){
1795 if( pMem
->flags
& MEM_Int
){
1796 sqlite3VdbeMemRealify(pMem
);
1801 sqlite3Error(db
, rc
);
1802 return sqlite3ApiExit(db
, rc
);
1804 #endif /* SQLITE_ENABLE_PREUPDATE_HOOK */
1806 #ifdef SQLITE_ENABLE_PREUPDATE_HOOK
1808 ** This function is called from within a pre-update callback to retrieve
1809 ** the number of columns in the row being updated, deleted or inserted.
1811 int sqlite3_preupdate_count(sqlite3
*db
){
1812 PreUpdate
*p
= db
->pPreUpdate
;
1813 return (p
? p
->keyinfo
.nKeyField
: 0);
1815 #endif /* SQLITE_ENABLE_PREUPDATE_HOOK */
1817 #ifdef SQLITE_ENABLE_PREUPDATE_HOOK
1819 ** This function is designed to be called from within a pre-update callback
1820 ** only. It returns zero if the change that caused the callback was made
1821 ** immediately by a user SQL statement. Or, if the change was made by a
1822 ** trigger program, it returns the number of trigger programs currently
1823 ** on the stack (1 for a top-level trigger, 2 for a trigger fired by a
1824 ** top-level trigger etc.).
1826 ** For the purposes of the previous paragraph, a foreign key CASCADE, SET NULL
1827 ** or SET DEFAULT action is considered a trigger.
1829 int sqlite3_preupdate_depth(sqlite3
*db
){
1830 PreUpdate
*p
= db
->pPreUpdate
;
1831 return (p
? p
->v
->nFrame
: 0);
1833 #endif /* SQLITE_ENABLE_PREUPDATE_HOOK */
1835 #ifdef SQLITE_ENABLE_PREUPDATE_HOOK
1837 ** This function is called from within a pre-update callback to retrieve
1838 ** a field of the row currently being updated or inserted.
1840 int sqlite3_preupdate_new(sqlite3
*db
, int iIdx
, sqlite3_value
**ppValue
){
1841 PreUpdate
*p
= db
->pPreUpdate
;
1845 if( !p
|| p
->op
==SQLITE_DELETE
){
1846 rc
= SQLITE_MISUSE_BKPT
;
1847 goto preupdate_new_out
;
1849 if( p
->pPk
&& p
->op
!=SQLITE_UPDATE
){
1850 iIdx
= sqlite3ColumnOfIndex(p
->pPk
, iIdx
);
1852 if( iIdx
>=p
->pCsr
->nField
|| iIdx
<0 ){
1854 goto preupdate_new_out
;
1857 if( p
->op
==SQLITE_INSERT
){
1858 /* For an INSERT, memory cell p->iNewReg contains the serialized record
1859 ** that is being inserted. Deserialize it. */
1860 UnpackedRecord
*pUnpack
= p
->pNewUnpacked
;
1862 Mem
*pData
= &p
->v
->aMem
[p
->iNewReg
];
1863 rc
= ExpandBlob(pData
);
1864 if( rc
!=SQLITE_OK
) goto preupdate_new_out
;
1865 pUnpack
= vdbeUnpackRecord(&p
->keyinfo
, pData
->n
, pData
->z
);
1868 goto preupdate_new_out
;
1870 p
->pNewUnpacked
= pUnpack
;
1872 pMem
= &pUnpack
->aMem
[iIdx
];
1873 if( iIdx
==p
->pTab
->iPKey
){
1874 sqlite3VdbeMemSetInt64(pMem
, p
->iKey2
);
1875 }else if( iIdx
>=pUnpack
->nField
){
1876 pMem
= (sqlite3_value
*)columnNullValue();
1879 /* For an UPDATE, memory cell (p->iNewReg+1+iIdx) contains the required
1880 ** value. Make a copy of the cell contents and return a pointer to it.
1881 ** It is not safe to return a pointer to the memory cell itself as the
1882 ** caller may modify the value text encoding.
1884 assert( p
->op
==SQLITE_UPDATE
);
1886 p
->aNew
= (Mem
*)sqlite3DbMallocZero(db
, sizeof(Mem
) * p
->pCsr
->nField
);
1889 goto preupdate_new_out
;
1892 assert( iIdx
>=0 && iIdx
<p
->pCsr
->nField
);
1893 pMem
= &p
->aNew
[iIdx
];
1894 if( pMem
->flags
==0 ){
1895 if( iIdx
==p
->pTab
->iPKey
){
1896 sqlite3VdbeMemSetInt64(pMem
, p
->iKey2
);
1898 rc
= sqlite3VdbeMemCopy(pMem
, &p
->v
->aMem
[p
->iNewReg
+1+iIdx
]);
1899 if( rc
!=SQLITE_OK
) goto preupdate_new_out
;
1906 sqlite3Error(db
, rc
);
1907 return sqlite3ApiExit(db
, rc
);
1909 #endif /* SQLITE_ENABLE_PREUPDATE_HOOK */
1911 #ifdef SQLITE_ENABLE_STMT_SCANSTATUS
1913 ** Return status data for a single loop within query pStmt.
1915 int sqlite3_stmt_scanstatus(
1916 sqlite3_stmt
*pStmt
, /* Prepared statement being queried */
1917 int idx
, /* Index of loop to report on */
1918 int iScanStatusOp
, /* Which metric to return */
1919 void *pOut
/* OUT: Write the answer here */
1921 Vdbe
*p
= (Vdbe
*)pStmt
;
1923 if( idx
<0 || idx
>=p
->nScan
) return 1;
1924 pScan
= &p
->aScan
[idx
];
1925 switch( iScanStatusOp
){
1926 case SQLITE_SCANSTAT_NLOOP
: {
1927 *(sqlite3_int64
*)pOut
= p
->anExec
[pScan
->addrLoop
];
1930 case SQLITE_SCANSTAT_NVISIT
: {
1931 *(sqlite3_int64
*)pOut
= p
->anExec
[pScan
->addrVisit
];
1934 case SQLITE_SCANSTAT_EST
: {
1936 LogEst x
= pScan
->nEst
;
1941 *(double*)pOut
= r
*sqlite3LogEstToInt(x
);
1944 case SQLITE_SCANSTAT_NAME
: {
1945 *(const char**)pOut
= pScan
->zName
;
1948 case SQLITE_SCANSTAT_EXPLAIN
: {
1949 if( pScan
->addrExplain
){
1950 *(const char**)pOut
= p
->aOp
[ pScan
->addrExplain
].p4
.z
;
1952 *(const char**)pOut
= 0;
1956 case SQLITE_SCANSTAT_SELECTID
: {
1957 if( pScan
->addrExplain
){
1958 *(int*)pOut
= p
->aOp
[ pScan
->addrExplain
].p1
;
1972 ** Zero all counters associated with the sqlite3_stmt_scanstatus() data.
1974 void sqlite3_stmt_scanstatus_reset(sqlite3_stmt
*pStmt
){
1975 Vdbe
*p
= (Vdbe
*)pStmt
;
1976 memset(p
->anExec
, 0, p
->nOp
* sizeof(i64
));
1978 #endif /* SQLITE_ENABLE_STMT_SCANSTATUS */