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 file is testing the SELECT statement.
14 # $Id: select1.test,v 1.70 2009/05/28 01:00:56 drh Exp $
16 set testdir [file dirname $argv0]
17 source $testdir/tester.tcl
18 set ::testprefix fordelete
20 # This function returns a list of the tables or indexes opened with
21 # OP_OpenWrite instructions when the SQL statement passed as the only
22 # argument is executed. If the OPFLAG_FORDELETE flag is specified on
23 # the OP_OpenWrite, an asterix is appended to the object name. The list
24 # is sorted in [lsort] order before it is returned.
26 proc analyze_delete_program {sql} {
27 # Build a map from root page to table/index name.
29 SELECT name, rootpage FROM sqlite_master
31 set T($rootpage) $name
34 # For each OpenWrite instruction generated for the proposed DELETE
35 # statement, add the following array entries:
37 # $M(<cursor number>) -> <object name>
38 # $O(<object name>) -> "*" | ""
40 # The O() entry is set to "*" if the BTREE_FORDELETE flag is specified,
43 db eval "EXPLAIN $sql" R {
44 if {$R(opcode)=="OpenWrite"} {
47 if {[info exists T($root)]} { set M($csr) $T($root) }
51 if {"0x$R(p5)" & 0x08} {
59 db eval "EXPLAIN $sql" R {
60 if {$R(opcode) == "Delete"} {
62 if {[info exists M($csr)]} {
63 set idxdelete [expr {("0x$R(p5)" & 0x04) ? 1 : 0}]
65 append O($M($csr)) "+"
72 foreach {k v} [array get O] {
73 lappend res "${k}${v}"
79 proc do_adp_test {tn sql res} {
80 uplevel [list do_test $tn [list analyze_delete_program $sql] [list {*}$res]]
84 CREATE TABLE t1(a PRIMARY KEY, b);
87 foreach {tn sql res} {
88 1 { DELETE FROM t1 WHERE a=?} { sqlite_autoindex_t1_1 t1*+ }
89 2 { DELETE FROM t1 WHERE a=? AND b=? } { sqlite_autoindex_t1_1 t1+ }
90 3 { DELETE FROM t1 WHERE a>? } { sqlite_autoindex_t1_1 t1*+ }
91 4 { DELETE FROM t1 WHERE rowid=? } { sqlite_autoindex_t1_1* t1 }
93 do_adp_test 1.$tn $sql $res
97 CREATE TABLE t2(a, b, c);
98 CREATE INDEX t2a ON t2(a);
99 CREATE INDEX t2b ON t2(b);
100 CREATE INDEX t2c ON t2(c);
102 foreach {tn sql res} {
103 1 { DELETE FROM t2 WHERE a=?} { t2*+ t2a t2b* t2c* }
104 2 { DELETE FROM t2 WHERE a=? AND +b=?} { t2+ t2a t2b* t2c* }
105 3 { DELETE FROM t2 WHERE a=? OR b=?} { t2 t2a* t2b* t2c* }
106 4 { DELETE FROM t2 WHERE +a=? } { t2 t2a* t2b* t2c* }
107 5 { DELETE FROM t2 WHERE rowid=? } { t2 t2a* t2b* t2c* }
109 do_adp_test 2.$tn $sql $res
112 #-------------------------------------------------------------------------
113 # Test that a record that consists of the bytes:
117 # is interpreted by OP_Column as a vector of NULL values (assuming the
118 # default column values are NULL). Also test that:
122 # is handled in the same way.
124 do_execsql_test 3.0 {
125 CREATE TABLE x1(a INTEGER PRIMARY KEY, b, c, d);
126 CREATE TABLE x2(a INTEGER PRIMARY KEY, b, c, d);
130 set root [db one { SELECT rootpage FROM sqlite_master WHERE name = 'x1' }]
134 set bt [btree_from_db db]
135 set csr [btree_cursor $bt $root 1]
136 btree_insert $csr 5 "\000"
137 btree_close_cursor $csr
146 set root [db one { SELECT rootpage FROM sqlite_master WHERE name = 'x2' }]
150 set bt [btree_from_db db]
151 set csr [btree_cursor $bt $root 1]
152 btree_insert $csr 6 "\000"
153 btree_close_cursor $csr
162 #-------------------------------------------------------------------------
165 do_execsql_test 4.0 {
167 CREATE TABLE p1(one PRIMARY KEY, two);
169 CREATE TRIGGER tr_bd BEFORE DELETE ON p1 BEGIN
170 INSERT INTO log VALUES('delete');
172 INSERT INTO p1 VALUES('a', 'A'), ('b', 'B'), ('c', 'C');
173 DELETE FROM p1 WHERE one = 'a';
177 do_execsql_test 4.1 {
179 CREATE TABLE tbl(a PRIMARY KEY, b, c);
180 CREATE TABLE log(a, b, c);
181 INSERT INTO "tbl" VALUES(1,2,3);
182 CREATE TRIGGER the_trigger BEFORE DELETE ON tbl BEGIN
183 INSERT INTO log VALUES(1, 2,3);
186 DELETE FROM tbl WHERE a=1;
190 do_execsql_test 5.1 {
191 PRAGMA foreign_keys = 1;
192 CREATE TABLE t1(a INTEGER PRIMARY KEY, b);
194 c INTEGER PRIMARY KEY,
195 d INTEGER DEFAULT 1 REFERENCES t1 ON DELETE SET DEFAULT
198 do_execsql_test 5.2 {
199 INSERT INTO t1 VALUES(1, 'one');
200 INSERT INTO t1 VALUES(2, 'two');
201 INSERT INTO t2 VALUES(1, 2);
204 do_execsql_test 5.3 {
205 DELETE FROM t1 WHERE a = 2;