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# 2005 August 24
#
# The author disclaims copyright to this source code. In place of
# a legal notice, here is a blessing:
#
# May you do good and not evil.
# May you find forgiveness for yourself and forgive others.
# May you share freely, never taking more than you give.
#
#***********************************************************************
# This file implements regression tests for SQLite library. The
# focus of this script is a test of the DELETE command.
#
set testdir [file dirname $argv0]
source $testdir/tester.tcl
set testprefix delete4
do_execsql_test 1.1 {
CREATE TABLE t1(x INTEGER PRIMARY KEY, y);
INSERT INTO t1 VALUES(1, 0);
INSERT INTO t1 VALUES(2, 1);
INSERT INTO t1 VALUES(3, 0);
INSERT INTO t1 VALUES(4, 1);
INSERT INTO t1 VALUES(5, 0);
INSERT INTO t1 VALUES(6, 1);
INSERT INTO t1 VALUES(7, 0);
INSERT INTO t1 VALUES(8, 1);
}
do_execsql_test 1.2 {
DELETE FROM t1 WHERE y=1;
}
do_execsql_test 1.3 {
SELECT x FROM t1;
} {1 3 5 7}
#-------------------------------------------------------------------------
#
reset_db
do_execsql_test 2.1 {
CREATE TABLE t1(x INTEGER PRIMARY KEY, y, z);
INSERT INTO t1 VALUES(1, 0, randomblob(200));
INSERT INTO t1 VALUES(2, 1, randomblob(200));
INSERT INTO t1 VALUES(3, 0, randomblob(200));
INSERT INTO t1 VALUES(4, 1, randomblob(200));
INSERT INTO t1 VALUES(5, 0, randomblob(200));
INSERT INTO t1 VALUES(6, 1, randomblob(200));
INSERT INTO t1 VALUES(7, 0, randomblob(200));
INSERT INTO t1 VALUES(8, 1, randomblob(200));
}
do_execsql_test 2.2 {
DELETE FROM t1 WHERE y=1;
}
do_execsql_test 2.3 {
SELECT x FROM t1;
} {1 3 5 7}
#-------------------------------------------------------------------------
#
reset_db
do_execsql_test 3.1 {
CREATE TABLE t1(a, b, PRIMARY KEY(a, b)) WITHOUT ROWID;
INSERT INTO t1 VALUES(1, 2);
INSERT INTO t1 VALUES(2, 4);
INSERT INTO t1 VALUES(1, 5);
DELETE FROM t1 WHERE a=1;
SELECT * FROM t1;
} {2 4}
#-------------------------------------------------------------------------
# DELETE statement that uses the OR optimization
#
reset_db
do_execsql_test 3.1 {
CREATE TABLE t1(i INTEGER PRIMARY KEY, a, b);
CREATE INDEX i1a ON t1(a);
CREATE INDEX i1b ON t1(b);
INSERT INTO t1 VALUES(1, 'one', 'i');
INSERT INTO t1 VALUES(2, 'two', 'ii');
INSERT INTO t1 VALUES(3, 'three', 'iii');
INSERT INTO t1 VALUES(4, 'four', 'iv');
INSERT INTO t1 VALUES(5, 'one', 'i');
INSERT INTO t1 VALUES(6, 'two', 'ii');
INSERT INTO t1 VALUES(7, 'three', 'iii');
INSERT INTO t1 VALUES(8, 'four', 'iv');
} {}
do_execsql_test 3.2 {
DELETE FROM t1 WHERE a='two' OR b='iv';
}
do_execsql_test 3.3 {
SELECT i FROM t1 ORDER BY i;
} {1 3 5 7}
do_execsql_test 3.4 {
PRAGMA integrity_check;
} {ok}
# Between 2015-09-14 and 2015-09-28, the following test cases would result
# in corruption (wrong # of entries in index) due to a bug in the ONEPASS
# optimization.
#
do_execsql_test 4.1 {
DROP TABLE IF EXISTS t4;
CREATE TABLE t4(col0, col1);
INSERT INTO "t4" VALUES(14, 'abcde');
CREATE INDEX idx_t4_0 ON t4 (col1, col0);
CREATE INDEX idx_t4_3 ON t4 (col0);
DELETE FROM t4 WHERE col0=69 OR col0>7;
PRAGMA integrity_check;
} {ok}
do_execsql_test 4.2 {
DROP TABLE IF EXISTS t4;
CREATE TABLE t4(col0, col1);
INSERT INTO "t4" VALUES(14, 'abcde');
CREATE INDEX idx_t4_3 ON t4 (col0);
CREATE INDEX idx_t4_0 ON t4 (col1, col0);
DELETE FROM t4 WHERE col0=69 OR col0>7;
PRAGMA integrity_check;
} {ok}
do_execsql_test 4.11 {
DROP TABLE IF EXISTS t4;
CREATE TABLE t4(col0, col1, pk PRIMARY KEY) WITHOUT ROWID;
INSERT INTO t4 VALUES(14, 'abcde','xyzzy');
CREATE INDEX idx_t4_0 ON t4 (col1, col0);
CREATE INDEX idx_t4_3 ON t4 (col0);
DELETE FROM t4 WHERE col0=69 OR col0>7;
PRAGMA integrity_check;
} {ok}
do_execsql_test 4.12 {
DROP TABLE IF EXISTS t4;
CREATE TABLE t4(col0, col1, pk PRIMARY KEY) WITHOUT ROWID;
INSERT INTO t4 VALUES(14, 'abcde','xyzzy');
CREATE INDEX idx_t4_3 ON t4 (col0);
CREATE INDEX idx_t4_0 ON t4 (col1, col0);
DELETE FROM t4 WHERE col0=69 OR col0>7;
PRAGMA integrity_check;
} {ok}
# 2016-04-09
# Ticket https://sqlite.org/src/info/a306e56ff68b8fa5
# Failure to completely delete when reverse_unordered_selects is
# engaged.
#
db close
forcedelete test.db
sqlite3 db test.db
do_execsql_test 5.0 {
PRAGMA page_size=1024;
CREATE TABLE t1(a INTEGER PRIMARY KEY, b, c);
CREATE INDEX x1 ON t1(b, c);
INSERT INTO t1(a,b,c) VALUES(1, 1, zeroblob(80));
INSERT INTO t1(a,b,c) SELECT a+1, 1, c FROM t1;
INSERT INTO t1(a,b,c) SELECT a+2, 1, c FROM t1;
INSERT INTO t1(a,b,c) SELECT a+10, 2, c FROM t1 WHERE b=1;
INSERT INTO t1(a,b,c) SELECT a+20, 3, c FROM t1 WHERE b=1;
PRAGMA reverse_unordered_selects = ON;
DELETE FROM t1 WHERE b=2;
SELECT a FROM t1 WHERE b=2;
} {}
# 2016-05-02
# Ticket https://www.sqlite.org/src/tktview/dc6ebeda93960877
# A subquery in the WHERE clause of a one-pass DELETE can cause an
# incorrect answer.
#
db close
forcedelete test.db
sqlite3 db test.db
do_execsql_test 6.0 {
CREATE TABLE t2(x INT);
INSERT INTO t2(x) VALUES(1),(2),(3),(4),(5);
DELETE FROM t2 WHERE EXISTS(SELECT 1 FROM t2 AS v WHERE v.x=t2.x-1);
SELECT x FROM t2;
} {1}
do_execsql_test 6.1 {
DROP TABLE IF EXISTS t2;
CREATE TABLE t2(x INT);
INSERT INTO t2(x) VALUES(1),(2),(3),(4),(5);
DELETE FROM t2 WHERE EXISTS(SELECT 1 FROM t2 AS v WHERE v.x=t2.x+1);
SELECT x FROM t2;
} {5}
finish_test
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