3 # The author disclaims copyright to this source code. In place of
4 # a legal notice, here is a blessing:
6 # May you do good and not evil.
7 # May you find forgiveness for yourself and forgive others.
8 # May you share freely, never taking more than you give.
10 #*************************************************************************
11 # This file implements regression tests for SQLite library. The
12 # focus of this script is testing that SQLite can handle a subtle
13 # file format change that may be used in the future to implement
14 # "ALTER TABLE ... ADD COLUMN".
16 # $Id: alter2.test,v 1.14 2009/04/07 14:14:22 danielk1977 Exp $
19 set testdir [file dirname $argv0]
20 source $testdir/tester.tcl
22 # We have to have pragmas in order to do this test
23 ifcapable {!pragma} return
25 # Do not use a codec for tests in this file, as the database file is
26 # manipulated directly using tcl scripts. See proc [set_file_format].
30 # The file format change affects the way row-records stored in tables (but
31 # not indices) are interpreted. Before version 3.1.3, a row-record for a
32 # table with N columns was guaranteed to contain exactly N fields. As
33 # of version 3.1.3, the record may contain up to N fields. In this case
34 # the M fields that are present are the values for the left-most M
35 # columns. The (N-M) rightmost columns contain NULL.
37 # If any records in the database contain less fields than their table
38 # has columns, then the file-format meta value should be set to (at least) 2.
41 # This procedure sets the value of the file-format in file 'test.db'
42 # to $newval. Also, the schema cookie is incremented.
44 proc set_file_format {newval} {
45 hexio_write test.db 44 [hexio_render_int32 $newval]
46 set schemacookie [hexio_get_int [hexio_read test.db 40 4]]
48 hexio_write test.db 40 [hexio_render_int32 $schemacookie]
52 # This procedure returns the value of the file-format in file 'test.db'.
54 proc get_file_format {{fname test.db}} {
55 return [hexio_get_int [hexio_read $fname 44 4]]
58 # This procedure sets the SQL statement stored for table $tbl in the
59 # sqlite_master table of file 'test.db' to $sql. Also set the file format
60 # to the supplied value. This is 2 if the added column has a default that is
61 # NULL, or 3 otherwise.
63 proc alter_table {tbl sql {file_format 2}} {
65 set s [string map {' ''} $sql]
66 set t [string map {' ''} $tbl]
68 PRAGMA writable_schema = 1;
69 UPDATE sqlite_master SET sql = '$s' WHERE name = '$t' AND type = 'table';
70 PRAGMA writable_schema = 0;
76 # Create bogus application-defined functions for functions used
77 # internally by ALTER TABLE, to ensure that ALTER TABLE falls back
78 # to the built-in functions.
80 proc failing_app_func {args} {error "bad function"}
82 db func substr failing_app_func
83 db func like failing_app_func
84 db func sqlite_rename_table failing_app_func
85 db func sqlite_rename_trigger failing_app_func
86 db func sqlite_rename_parent failing_app_func
87 catchsql {SELECT substr('abcdefg',1,3)}
91 #-----------------------------------------------------------------------
92 # Some basic tests to make sure short rows are handled.
96 CREATE TABLE abc(a, b);
97 INSERT INTO abc VALUES(1, 2);
98 INSERT INTO abc VALUES(3, 4);
99 INSERT INTO abc VALUES(5, 6);
103 # ALTER TABLE abc ADD COLUMN c;
104 alter_table abc {CREATE TABLE abc(a, b, c);}
110 } {1 2 {} 3 4 {} 5 6 {}}
113 UPDATE abc SET c = 10 WHERE a = 1;
116 } {1 2 10 3 4 {} 5 6 {}}
119 CREATE INDEX abc_i ON abc(c);
124 SELECT c FROM abc ORDER BY c;
129 SELECT * FROM abc WHERE c = 10;
134 SELECT sum(a), c FROM abc GROUP BY c;
138 # ALTER TABLE abc ADD COLUMN d;
139 alter_table abc {CREATE TABLE abc(a, b, c, d);}
140 if {[permutation] == "prepare"} { db cache flush }
141 execsql { SELECT * FROM abc; }
143 UPDATE abc SET d = 11 WHERE c IS NULL AND a<4;
146 } {1 2 10 {} 3 4 {} 11 5 6 {} {}}
147 do_test alter2-1.10 {
149 SELECT typeof(d) FROM abc;
151 } {null integer null}
152 do_test alter2-1.99 {
158 #-----------------------------------------------------------------------
159 # Test that views work when the underlying table structure is changed.
164 CREATE TABLE abc2(a, b, c);
165 INSERT INTO abc2 VALUES(1, 2, 10);
166 INSERT INTO abc2 VALUES(3, 4, NULL);
167 INSERT INTO abc2 VALUES(5, 6, NULL);
168 CREATE VIEW abc2_v AS SELECT * FROM abc2;
169 SELECT * FROM abc2_v;
171 } {1 2 10 3 4 {} 5 6 {}}
173 # ALTER TABLE abc ADD COLUMN d;
174 alter_table abc2 {CREATE TABLE abc2(a, b, c, d);}
176 SELECT * FROM abc2_v;
178 } {1 2 10 {} 3 4 {} {} 5 6 {} {}}
187 #-----------------------------------------------------------------------
188 # Test that triggers work when a short row is copied to the old.*
189 # trigger pseudo-table.
194 CREATE TABLE abc3(a, b);
195 CREATE TABLE blog(o, n);
196 CREATE TRIGGER abc3_t AFTER UPDATE OF b ON abc3 BEGIN
197 INSERT INTO blog VALUES(old.b, new.b);
203 INSERT INTO abc3 VALUES(1, 4);
204 UPDATE abc3 SET b = 2 WHERE b = 4;
210 INSERT INTO abc3 VALUES(3, 4);
211 INSERT INTO abc3 VALUES(5, 6);
213 alter_table abc3 {CREATE TABLE abc3(a, b, c);}
217 } {1 2 {} 3 4 {} 5 6 {}}
220 UPDATE abc3 SET b = b*2 WHERE a<4;
223 } {1 4 {} 3 8 {} 5 6 {}}
232 CREATE TABLE clog(o, n);
233 CREATE TRIGGER abc3_t2 AFTER UPDATE OF c ON abc3 BEGIN
234 INSERT INTO clog VALUES(old.c, new.c);
236 UPDATE abc3 SET c = a*2;
241 execsql { CREATE TABLE abc3(a, b); }
244 #---------------------------------------------------------------------
245 # Check that an error occurs if the database is upgraded to a file
246 # format that SQLite does not support (in this case 5). Note: The
247 # file format is checked each time the schema is read, so changing the
248 # file format requires incrementing the schema cookie.
253 catch { sqlite3 db test.db }
257 # We have to run two queries here because the Tcl interface uses
258 # sqlite3_prepare_v2(). In this case, the first query encounters an
259 # SQLITE_SCHEMA error. Then, when trying to recompile the statement, the
260 # "unsupported file format" error is encountered. So the error code
261 # returned is SQLITE_SCHEMA, not SQLITE_ERROR as required by the following
264 # When the query is attempted a second time, the same error message is
265 # returned but the error code is SQLITE_ERROR, because the unsupported
266 # file format was detected during a call to sqlite3_prepare(), not
269 catchsql { SELECT * FROM sqlite_master; }
270 catchsql { SELECT * FROM sqlite_master; }
271 } {1 {unsupported file format}}
276 set ::DB [sqlite3_connection_pointer db]
278 SELECT * FROM sqlite_master;
280 } {1 {unsupported file format}}
285 #---------------------------------------------------------------------
286 # Check that executing VACUUM on a file with file-format version 2
287 # resets the file format to 1.
289 set default_file_format [expr $SQLITE_DEFAULT_FILE_FORMAT==4 ? 4 : 1]
295 execsql {SELECT 1 FROM sqlite_master LIMIT 1;}
303 } $default_file_format
306 #---------------------------------------------------------------------
307 # Test that when a database with file-format 2 is opened, new
308 # databases are still created with file-format 1.
318 forcedelete test2.db-journal
321 ATTACH 'test2.db' AS aux;
322 CREATE TABLE aux.t1(a, b);
324 get_file_format test2.db
325 } $default_file_format
329 CREATE TABLE t1(a, b);
334 #---------------------------------------------------------------------
335 # Test that types and values for columns added with default values
336 # other than NULL work with SELECT statements.
342 INSERT INTO t1 VALUES(1);
343 INSERT INTO t1 VALUES(2);
344 INSERT INTO t1 VALUES(3);
345 INSERT INTO t1 VALUES(4);
350 set sql {CREATE TABLE t1(a, b DEFAULT '123', c INTEGER DEFAULT '123')}
351 alter_table t1 $sql 3
353 SELECT * FROM t1 LIMIT 1;
358 SELECT a, typeof(a), b, typeof(b), c, typeof(c) FROM t1 LIMIT 1;
360 } {1 integer 123 text 123 integer}
363 SELECT a, typeof(a), b, typeof(b), c, typeof(c) FROM t1 LIMIT 1;
365 } {1 integer 123 text 123 integer}
367 set sql {CREATE TABLE t1(a, b DEFAULT -123.0, c VARCHAR(10) default 5)}
368 alter_table t1 $sql 3
370 SELECT a, typeof(a), b, typeof(b), c, typeof(c) FROM t1 LIMIT 1;
372 } {1 integer -123 integer 5 text}
374 #-----------------------------------------------------------------------
375 # Test that UPDATE trigger tables work with default values, and that when
376 # a row is updated the default values are correctly transfered to the
380 db function set_val {set ::val}
383 CREATE TRIGGER trig1 BEFORE UPDATE ON t1 BEGIN
385 old.b||' '||typeof(old.b)||' '||old.c||' '||typeof(old.c)||' '||
386 new.b||' '||typeof(new.b)||' '||new.c||' '||typeof(new.c)
395 UPDATE t1 SET c = 10 WHERE a = 1;
396 SELECT a, typeof(a), b, typeof(b), c, typeof(c) FROM t1 LIMIT 1;
398 } {1 integer -123 integer 10 text}
402 } {-123 integer 5 text -123 integer 10 text}
405 #-----------------------------------------------------------------------
406 # Test that DELETE trigger tables work with default values, and that when
407 # a row is updated the default values are correctly transfered to the
413 CREATE TRIGGER trig2 BEFORE DELETE ON t1 BEGIN
415 old.b||' '||typeof(old.b)||' '||old.c||' '||typeof(old.c)
423 DELETE FROM t1 WHERE a = 2;
426 } {-123 integer 5 text}
429 #-----------------------------------------------------------------------
430 # Test creating an index on a column added with a default value.
433 do_test alter2-10.1 {
436 INSERT INTO t2 VALUES('a');
437 INSERT INTO t2 VALUES('b');
438 INSERT INTO t2 VALUES('c');
439 INSERT INTO t2 VALUES('d');
441 alter_table t2 {CREATE TABLE t2(a, b DEFAULT X'ABCD', c DEFAULT NULL);} 3
443 SELECT * FROM sqlite_master;
446 SELECT quote(a), quote(b), quote(c) FROM t2 LIMIT 1;
449 do_test alter2-10.2 {
451 CREATE INDEX i1 ON t2(b);
452 SELECT a FROM t2 WHERE b = X'ABCD';
455 do_test alter2-10.3 {
457 DELETE FROM t2 WHERE a = 'c';
458 SELECT a FROM t2 WHERE b = X'ABCD';
461 do_test alter2-10.4 {
463 SELECT count(b) FROM t2 WHERE b = X'ABCD';