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 a test of the DELETE command.
15 set testdir [file dirname $argv0]
16 source $testdir/tester.tcl
17 set testprefix delete4
20 CREATE TABLE t1(x INTEGER PRIMARY KEY, y);
21 INSERT INTO t1 VALUES(1, 0);
22 INSERT INTO t1 VALUES(2, 1);
23 INSERT INTO t1 VALUES(3, 0);
24 INSERT INTO t1 VALUES(4, 1);
25 INSERT INTO t1 VALUES(5, 0);
26 INSERT INTO t1 VALUES(6, 1);
27 INSERT INTO t1 VALUES(7, 0);
28 INSERT INTO t1 VALUES(8, 1);
31 DELETE FROM t1 WHERE y=1;
37 #-------------------------------------------------------------------------
41 CREATE TABLE t1(x INTEGER PRIMARY KEY, y, z);
42 INSERT INTO t1 VALUES(1, 0, randomblob(200));
43 INSERT INTO t1 VALUES(2, 1, randomblob(200));
44 INSERT INTO t1 VALUES(3, 0, randomblob(200));
45 INSERT INTO t1 VALUES(4, 1, randomblob(200));
46 INSERT INTO t1 VALUES(5, 0, randomblob(200));
47 INSERT INTO t1 VALUES(6, 1, randomblob(200));
48 INSERT INTO t1 VALUES(7, 0, randomblob(200));
49 INSERT INTO t1 VALUES(8, 1, randomblob(200));
52 DELETE FROM t1 WHERE y=1;
59 #-------------------------------------------------------------------------
63 CREATE TABLE t1(a, b, PRIMARY KEY(a, b)) WITHOUT ROWID;
64 INSERT INTO t1 VALUES(1, 2);
65 INSERT INTO t1 VALUES(2, 4);
66 INSERT INTO t1 VALUES(1, 5);
67 DELETE FROM t1 WHERE a=1;
71 #-------------------------------------------------------------------------
72 # DELETE statement that uses the OR optimization
76 CREATE TABLE t1(i INTEGER PRIMARY KEY, a, b);
77 CREATE INDEX i1a ON t1(a);
78 CREATE INDEX i1b ON t1(b);
79 INSERT INTO t1 VALUES(1, 'one', 'i');
80 INSERT INTO t1 VALUES(2, 'two', 'ii');
81 INSERT INTO t1 VALUES(3, 'three', 'iii');
82 INSERT INTO t1 VALUES(4, 'four', 'iv');
83 INSERT INTO t1 VALUES(5, 'one', 'i');
84 INSERT INTO t1 VALUES(6, 'two', 'ii');
85 INSERT INTO t1 VALUES(7, 'three', 'iii');
86 INSERT INTO t1 VALUES(8, 'four', 'iv');
90 DELETE FROM t1 WHERE a='two' OR b='iv';
94 SELECT i FROM t1 ORDER BY i;
98 PRAGMA integrity_check;
101 # Between 2015-09-14 and 2015-09-28, the following test cases would result
102 # in corruption (wrong # of entries in index) due to a bug in the ONEPASS
105 do_execsql_test 4.1 {
106 DROP TABLE IF EXISTS t4;
107 CREATE TABLE t4(col0, col1);
108 INSERT INTO "t4" VALUES(14, 'abcde');
109 CREATE INDEX idx_t4_0 ON t4 (col1, col0);
110 CREATE INDEX idx_t4_3 ON t4 (col0);
111 DELETE FROM t4 WHERE col0=69 OR col0>7;
112 PRAGMA integrity_check;
114 do_execsql_test 4.2 {
115 DROP TABLE IF EXISTS t4;
116 CREATE TABLE t4(col0, col1);
117 INSERT INTO "t4" VALUES(14, 'abcde');
118 CREATE INDEX idx_t4_3 ON t4 (col0);
119 CREATE INDEX idx_t4_0 ON t4 (col1, col0);
120 DELETE FROM t4 WHERE col0=69 OR col0>7;
121 PRAGMA integrity_check;
123 do_execsql_test 4.11 {
124 DROP TABLE IF EXISTS t4;
125 CREATE TABLE t4(col0, col1, pk PRIMARY KEY) WITHOUT ROWID;
126 INSERT INTO t4 VALUES(14, 'abcde','xyzzy');
127 CREATE INDEX idx_t4_0 ON t4 (col1, col0);
128 CREATE INDEX idx_t4_3 ON t4 (col0);
129 DELETE FROM t4 WHERE col0=69 OR col0>7;
130 PRAGMA integrity_check;
132 do_execsql_test 4.12 {
133 DROP TABLE IF EXISTS t4;
134 CREATE TABLE t4(col0, col1, pk PRIMARY KEY) WITHOUT ROWID;
135 INSERT INTO t4 VALUES(14, 'abcde','xyzzy');
136 CREATE INDEX idx_t4_3 ON t4 (col0);
137 CREATE INDEX idx_t4_0 ON t4 (col1, col0);
138 DELETE FROM t4 WHERE col0=69 OR col0>7;
139 PRAGMA integrity_check;
143 # Ticket https://sqlite.org/src/info/a306e56ff68b8fa5
144 # Failure to completely delete when reverse_unordered_selects is
150 do_execsql_test 5.0 {
151 PRAGMA page_size=1024;
152 CREATE TABLE t1(a INTEGER PRIMARY KEY, b, c);
153 CREATE INDEX x1 ON t1(b, c);
154 INSERT INTO t1(a,b,c) VALUES(1, 1, zeroblob(80));
155 INSERT INTO t1(a,b,c) SELECT a+1, 1, c FROM t1;
156 INSERT INTO t1(a,b,c) SELECT a+2, 1, c FROM t1;
157 INSERT INTO t1(a,b,c) SELECT a+10, 2, c FROM t1 WHERE b=1;
158 INSERT INTO t1(a,b,c) SELECT a+20, 3, c FROM t1 WHERE b=1;
159 PRAGMA reverse_unordered_selects = ON;
160 DELETE FROM t1 WHERE b=2;
161 SELECT a FROM t1 WHERE b=2;
165 # Ticket https://www.sqlite.org/src/tktview/dc6ebeda93960877
166 # A subquery in the WHERE clause of a one-pass DELETE can cause an
172 do_execsql_test 6.0 {
173 CREATE TABLE t2(x INT);
174 INSERT INTO t2(x) VALUES(1),(2),(3),(4),(5);
175 DELETE FROM t2 WHERE EXISTS(SELECT 1 FROM t2 AS v WHERE v.x=t2.x-1);
178 do_execsql_test 6.1 {
179 DROP TABLE IF EXISTS t2;
180 CREATE TABLE t2(x INT);
181 INSERT INTO t2(x) VALUES(1),(2),(3),(4),(5);
182 DELETE FROM t2 WHERE EXISTS(SELECT 1 FROM t2 AS v WHERE v.x=t2.x+1);