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danf0ee1d32015-09-12 19:26:11 +00001# 2005 August 24
2#
3# The author disclaims copyright to this source code. In place of
4# a legal notice, here is a blessing:
5#
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.
9#
10#***********************************************************************
11# This file implements regression tests for SQLite library. The
12# focus of this script is a test of the DELETE command.
13#
14
15set testdir [file dirname $argv0]
16source $testdir/tester.tcl
17set testprefix delete4
18
19do_execsql_test 1.1 {
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);
29}
30do_execsql_test 1.2 {
31 DELETE FROM t1 WHERE y=1;
32}
33do_execsql_test 1.3 {
34 SELECT x FROM t1;
35} {1 3 5 7}
36
37#-------------------------------------------------------------------------
38#
39reset_db
40do_execsql_test 2.1 {
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));
50}
51do_execsql_test 2.2 {
52 DELETE FROM t1 WHERE y=1;
53}
54do_execsql_test 2.3 {
55 SELECT x FROM t1;
56} {1 3 5 7}
57
58
59#-------------------------------------------------------------------------
60#
61reset_db
drha6df0e62021-06-03 18:51:51 +000062do_execsql_test 3.0.1 {
danf0ee1d32015-09-12 19:26:11 +000063 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;
drha6df0e62021-06-03 18:51:51 +000068 SELECT printf('(%d)',changes());
danf0ee1d32015-09-12 19:26:11 +000069 SELECT * FROM t1;
drha6df0e62021-06-03 18:51:51 +000070} {(2) 2 4}
71do_execsql_test 3.0.2 {
72 WITH RECURSIVE c(x) AS (VALUES(1) UNION ALL SELECT x+1 FROM c WHERE x<100)
73 INSERT INTO t1(a,b) SELECT x, x+1 FROM c;
74 SELECT printf('(%d)',changes());
75 DELETE FROM t1;
76 SELECT printf('(%d)',changes());
77} {(100) (101)}
danf0ee1d32015-09-12 19:26:11 +000078
79#-------------------------------------------------------------------------
80# DELETE statement that uses the OR optimization
81#
82reset_db
83do_execsql_test 3.1 {
84 CREATE TABLE t1(i INTEGER PRIMARY KEY, a, b);
85 CREATE INDEX i1a ON t1(a);
86 CREATE INDEX i1b ON t1(b);
87 INSERT INTO t1 VALUES(1, 'one', 'i');
88 INSERT INTO t1 VALUES(2, 'two', 'ii');
89 INSERT INTO t1 VALUES(3, 'three', 'iii');
90 INSERT INTO t1 VALUES(4, 'four', 'iv');
91 INSERT INTO t1 VALUES(5, 'one', 'i');
92 INSERT INTO t1 VALUES(6, 'two', 'ii');
93 INSERT INTO t1 VALUES(7, 'three', 'iii');
94 INSERT INTO t1 VALUES(8, 'four', 'iv');
95} {}
96
97do_execsql_test 3.2 {
98 DELETE FROM t1 WHERE a='two' OR b='iv';
99}
100
101do_execsql_test 3.3 {
102 SELECT i FROM t1 ORDER BY i;
103} {1 3 5 7}
104
105do_execsql_test 3.4 {
106 PRAGMA integrity_check;
107} {ok}
108
drh31697132015-09-28 15:08:28 +0000109# Between 2015-09-14 and 2015-09-28, the following test cases would result
110# in corruption (wrong # of entries in index) due to a bug in the ONEPASS
111# optimization.
112#
113do_execsql_test 4.1 {
114 DROP TABLE IF EXISTS t4;
115 CREATE TABLE t4(col0, col1);
116 INSERT INTO "t4" VALUES(14, 'abcde');
117 CREATE INDEX idx_t4_0 ON t4 (col1, col0);
118 CREATE INDEX idx_t4_3 ON t4 (col0);
119 DELETE FROM t4 WHERE col0=69 OR col0>7;
120 PRAGMA integrity_check;
121} {ok}
122do_execsql_test 4.2 {
123 DROP TABLE IF EXISTS t4;
124 CREATE TABLE t4(col0, col1);
125 INSERT INTO "t4" VALUES(14, 'abcde');
126 CREATE INDEX idx_t4_3 ON t4 (col0);
127 CREATE INDEX idx_t4_0 ON t4 (col1, col0);
128 DELETE FROM t4 WHERE col0=69 OR col0>7;
129 PRAGMA integrity_check;
130} {ok}
131do_execsql_test 4.11 {
132 DROP TABLE IF EXISTS t4;
133 CREATE TABLE t4(col0, col1, pk PRIMARY KEY) WITHOUT ROWID;
134 INSERT INTO t4 VALUES(14, 'abcde','xyzzy');
135 CREATE INDEX idx_t4_0 ON t4 (col1, col0);
136 CREATE INDEX idx_t4_3 ON t4 (col0);
137 DELETE FROM t4 WHERE col0=69 OR col0>7;
138 PRAGMA integrity_check;
139} {ok}
140do_execsql_test 4.12 {
141 DROP TABLE IF EXISTS t4;
142 CREATE TABLE t4(col0, col1, pk PRIMARY KEY) WITHOUT ROWID;
143 INSERT INTO t4 VALUES(14, 'abcde','xyzzy');
144 CREATE INDEX idx_t4_3 ON t4 (col0);
145 CREATE INDEX idx_t4_0 ON t4 (col1, col0);
146 DELETE FROM t4 WHERE col0=69 OR col0>7;
147 PRAGMA integrity_check;
148} {ok}
149
drhbfc7a8b2016-04-09 17:04:05 +0000150# 2016-04-09
151# Ticket https://sqlite.org/src/info/a306e56ff68b8fa5
152# Failure to completely delete when reverse_unordered_selects is
153# engaged.
154#
155db close
156forcedelete test.db
157sqlite3 db test.db
158do_execsql_test 5.0 {
159 PRAGMA page_size=1024;
160 CREATE TABLE t1(a INTEGER PRIMARY KEY, b, c);
161 CREATE INDEX x1 ON t1(b, c);
162 INSERT INTO t1(a,b,c) VALUES(1, 1, zeroblob(80));
163 INSERT INTO t1(a,b,c) SELECT a+1, 1, c FROM t1;
164 INSERT INTO t1(a,b,c) SELECT a+2, 1, c FROM t1;
165 INSERT INTO t1(a,b,c) SELECT a+10, 2, c FROM t1 WHERE b=1;
166 INSERT INTO t1(a,b,c) SELECT a+20, 3, c FROM t1 WHERE b=1;
167 PRAGMA reverse_unordered_selects = ON;
168 DELETE FROM t1 WHERE b=2;
169 SELECT a FROM t1 WHERE b=2;
170} {}
danf0ee1d32015-09-12 19:26:11 +0000171
drh57a07ba2016-05-02 12:18:56 +0000172# 2016-05-02
173# Ticket https://www.sqlite.org/src/tktview/dc6ebeda93960877
174# A subquery in the WHERE clause of a one-pass DELETE can cause an
175# incorrect answer.
176#
177db close
178forcedelete test.db
179sqlite3 db test.db
180do_execsql_test 6.0 {
181 CREATE TABLE t2(x INT);
182 INSERT INTO t2(x) VALUES(1),(2),(3),(4),(5);
183 DELETE FROM t2 WHERE EXISTS(SELECT 1 FROM t2 AS v WHERE v.x=t2.x-1);
184 SELECT x FROM t2;
185} {1}
186do_execsql_test 6.1 {
187 DROP TABLE IF EXISTS t2;
188 CREATE TABLE t2(x INT);
189 INSERT INTO t2(x) VALUES(1),(2),(3),(4),(5);
190 DELETE FROM t2 WHERE EXISTS(SELECT 1 FROM t2 AS v WHERE v.x=t2.x+1);
191 SELECT x FROM t2;
192} {5}
193
danb84b38f2019-04-04 17:58:34 +0000194#-------------------------------------------------------------------------
195# Test the effect of failing to find a table row based on an index key
196# within a DELETE. Either because the db is corrupt, or a trigger on another
197# row already deleted the entry, or because a BEFORE trigger on the current
198# row has already deleted it.
199#
200do_execsql_test 7.1.0 {
201 CREATE TABLE t3(id INT PRIMARY KEY, a, b) WITHOUT ROWID;
202 CREATE INDEX t3a ON t3(a);
203 CREATE INDEX t3b ON t3(b);
204
205 INSERT INTO t3 VALUES(1, 1, 1);
206 INSERT INTO t3 VALUES(2, 2, 2);
207 INSERT INTO t3 VALUES(3, 3, 3);
208 INSERT INTO t3 VALUES(4, 4, 1);
209}
210do_execsql_test 7.1.1 {
211 DELETE FROM t3 WHERE a=4 OR b=1;
212}
213do_execsql_test 7.1.2 {
214 SELECT * FROM t3;
215} { 2 2 2 3 3 3 }
216
217do_execsql_test 7.2.0 {
218 CREATE TABLE t4(a PRIMARY KEY, b) WITHOUT ROWID;
219 CREATE INDEX t4i ON t4(b);
220 INSERT INTO t4 VALUES(1, 'hello');
221 INSERT INTO t4 VALUES(2, 'world');
222
223 CREATE TABLE t5(a PRIMARY KEY, b) WITHOUT ROWID;
224 CREATE INDEX t5i ON t5(b);
225 INSERT INTO t5 VALUES(1, 'hello');
226 INSERT INTO t5 VALUES(3, 'world');
227
228 PRAGMA writable_schema = 1;
229 UPDATE sqlite_master SET rootpage = (
230 SELECT rootpage FROM sqlite_master WHERE name = 't5'
231 ) WHERE name = 't4';
232}
233
234db close
235sqlite3 db test.db
236do_execsql_test 7.2.1 {
237 DELETE FROM t4 WHERE b='world'
238}
239reset_db
240
241do_execsql_test 7.3.0 {
242 CREATE TABLE t3(id INT PRIMARY KEY, a, b) WITHOUT ROWID;
243 INSERT INTO t3 VALUES(1, 2, 3);
244 INSERT INTO t3 VALUES(4, 5, 6);
245 INSERT INTO t3 VALUES(7, 8, 9);
246 CREATE TRIGGER t3t BEFORE DELETE ON t3 BEGIN
247 DELETE FROM t3 WHERE id=old.id+3;
248 END;
249}
250
251do_execsql_test 7.3.1 {
252 DELETE FROM t3 WHERE a IN(2, 5, 8);
253 SELECT * FROM t3;
254} {}
255
256do_execsql_test 7.3.2 {
257 DROP TRIGGER t3t;
258 INSERT INTO t3 VALUES(1, 2, 3);
259 INSERT INTO t3 VALUES(4, 5, 6);
260 INSERT INTO t3 VALUES(7, 8, 9);
261 CREATE TRIGGER t3t BEFORE DELETE ON t3 BEGIN
262 DELETE FROM t3 WHERE id=old.id;
263 END;
264}
265
266do_execsql_test 7.3.3 {
267 DELETE FROM t3 WHERE a IN(2, 5, 8);
268 SELECT * FROM t3;
269} {}
270
drh57a07ba2016-05-02 12:18:56 +0000271
danf0ee1d32015-09-12 19:26:11 +0000272finish_test