mirror of
https://gitlab.com/cznic/sqlite.git
synced 2024-11-24 02:26:14 +00:00
444 lines
12 KiB
Plaintext
444 lines
12 KiB
Plaintext
# 2001 September 15
|
|
#
|
|
# 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 file is testing the DELETE FROM statement.
|
|
#
|
|
# $Id: delete.test,v 1.26 2009/06/05 17:09:12 drh Exp $
|
|
|
|
set testdir [file dirname $argv0]
|
|
source $testdir/tester.tcl
|
|
|
|
# Try to delete from a non-existant table.
|
|
#
|
|
do_test delete-1.1 {
|
|
set v [catch {execsql {DELETE FROM test1}} msg]
|
|
lappend v $msg
|
|
} {1 {no such table: test1}}
|
|
|
|
# Try to delete from sqlite_master
|
|
#
|
|
do_test delete-2.1 {
|
|
set v [catch {execsql {DELETE FROM sqlite_master}} msg]
|
|
lappend v $msg
|
|
} {1 {table sqlite_master may not be modified}}
|
|
|
|
# Delete selected entries from a table with and without an index.
|
|
#
|
|
do_test delete-3.1.1 {
|
|
execsql {CREATE TABLE table1(f1 int, f2 int)}
|
|
execsql {INSERT INTO table1 VALUES(1,2)}
|
|
execsql {INSERT INTO table1 VALUES(2,4)}
|
|
execsql {INSERT INTO table1 VALUES(3,8)}
|
|
execsql {INSERT INTO table1 VALUES(4,16)}
|
|
execsql {SELECT * FROM table1 ORDER BY f1}
|
|
} {1 2 2 4 3 8 4 16}
|
|
do_test delete-3.1.2 {
|
|
execsql {DELETE FROM table1 WHERE f1=3}
|
|
} {}
|
|
do_test delete-3.1.3 {
|
|
execsql {SELECT * FROM table1 ORDER BY f1}
|
|
} {1 2 2 4 4 16}
|
|
do_test delete-3.1.4 {
|
|
execsql {CREATE INDEX index1 ON table1(f1)}
|
|
execsql {PRAGMA count_changes=on}
|
|
ifcapable explain {
|
|
execsql {EXPLAIN DELETE FROM table1 WHERE f1=3}
|
|
}
|
|
execsql {DELETE FROM 'table1' WHERE f1=3}
|
|
} {0}
|
|
do_test delete-3.1.5 {
|
|
execsql {SELECT * FROM table1 ORDER BY f1}
|
|
} {1 2 2 4 4 16}
|
|
do_test delete-3.1.6.1 {
|
|
execsql {DELETE FROM table1 WHERE f1=2}
|
|
} {1}
|
|
do_test delete-3.1.6.2 {
|
|
db changes
|
|
} 1
|
|
do_test delete-3.1.7 {
|
|
execsql {SELECT * FROM table1 ORDER BY f1}
|
|
} {1 2 4 16}
|
|
integrity_check delete-3.2
|
|
|
|
# Semantic errors in the WHERE clause
|
|
#
|
|
do_test delete-4.1 {
|
|
execsql {CREATE TABLE table2(f1 int, f2 int)}
|
|
set v [catch {execsql {DELETE FROM table2 WHERE f3=5}} msg]
|
|
lappend v $msg
|
|
} {1 {no such column: f3}}
|
|
|
|
do_test delete-4.2 {
|
|
set v [catch {execsql {DELETE FROM table2 WHERE xyzzy(f1+4)}} msg]
|
|
lappend v $msg
|
|
} {1 {no such function: xyzzy}}
|
|
integrity_check delete-4.3
|
|
|
|
# Lots of deletes
|
|
#
|
|
do_test delete-5.1.1 {
|
|
execsql {DELETE FROM table1}
|
|
} {2}
|
|
do_test delete-5.1.2 {
|
|
execsql {SELECT count(*) FROM table1}
|
|
} {0}
|
|
do_test delete-5.2.1 {
|
|
execsql {BEGIN TRANSACTION}
|
|
for {set i 1} {$i<=200} {incr i} {
|
|
execsql "INSERT INTO table1 VALUES($i,[expr {$i*$i}])"
|
|
}
|
|
execsql {COMMIT}
|
|
execsql {SELECT count(*) FROM table1}
|
|
} {200}
|
|
do_test delete-5.2.2 {
|
|
execsql {DELETE FROM table1}
|
|
} {200}
|
|
do_test delete-5.2.3 {
|
|
execsql {BEGIN TRANSACTION}
|
|
for {set i 1} {$i<=200} {incr i} {
|
|
execsql "INSERT INTO table1 VALUES($i,[expr {$i*$i}])"
|
|
}
|
|
execsql {COMMIT}
|
|
execsql {SELECT count(*) FROM table1}
|
|
} {200}
|
|
do_test delete-5.2.4 {
|
|
execsql {PRAGMA count_changes=off}
|
|
execsql {DELETE FROM table1}
|
|
} {}
|
|
do_test delete-5.2.5 {
|
|
execsql {SELECT count(*) FROM table1}
|
|
} {0}
|
|
do_test delete-5.2.6 {
|
|
execsql {BEGIN TRANSACTION}
|
|
for {set i 1} {$i<=200} {incr i} {
|
|
execsql "INSERT INTO table1 VALUES($i,[expr {$i*$i}])"
|
|
}
|
|
execsql {COMMIT}
|
|
execsql {SELECT count(*) FROM table1}
|
|
} {200}
|
|
do_test delete-5.3 {
|
|
for {set i 1} {$i<=200} {incr i 4} {
|
|
execsql "DELETE FROM table1 WHERE f1==$i"
|
|
}
|
|
execsql {SELECT count(*) FROM table1}
|
|
} {150}
|
|
do_test delete-5.4.1 {
|
|
execsql "DELETE FROM table1 WHERE f1>50"
|
|
db changes
|
|
} [db one {SELECT count(*) FROM table1 WHERE f1>50}]
|
|
do_test delete-5.4.2 {
|
|
execsql {SELECT count(*) FROM table1}
|
|
} {37}
|
|
do_test delete-5.5 {
|
|
for {set i 1} {$i<=70} {incr i 3} {
|
|
execsql "DELETE FROM table1 WHERE f1==$i"
|
|
}
|
|
execsql {SELECT f1 FROM table1 ORDER BY f1}
|
|
} {2 3 6 8 11 12 14 15 18 20 23 24 26 27 30 32 35 36 38 39 42 44 47 48 50}
|
|
do_test delete-5.6 {
|
|
for {set i 1} {$i<40} {incr i} {
|
|
execsql "DELETE FROM table1 WHERE f1==$i"
|
|
}
|
|
execsql {SELECT f1 FROM table1 ORDER BY f1}
|
|
} {42 44 47 48 50}
|
|
do_test delete-5.7 {
|
|
execsql "DELETE FROM table1 WHERE f1!=48"
|
|
execsql {SELECT f1 FROM table1 ORDER BY f1}
|
|
} {48}
|
|
integrity_check delete-5.8
|
|
|
|
|
|
# Delete large quantities of data. We want to test the List overflow
|
|
# mechanism in the vdbe.
|
|
#
|
|
do_test delete-6.1 {
|
|
execsql {BEGIN; DELETE FROM table1}
|
|
for {set i 1} {$i<=3000} {incr i} {
|
|
execsql "INSERT INTO table1 VALUES($i,[expr {$i*$i}])"
|
|
}
|
|
execsql {DELETE FROM table2}
|
|
for {set i 1} {$i<=3000} {incr i} {
|
|
execsql "INSERT INTO table2 VALUES($i,[expr {$i*$i}])"
|
|
}
|
|
execsql {COMMIT}
|
|
execsql {SELECT count(*) FROM table1}
|
|
} {3000}
|
|
do_test delete-6.2 {
|
|
execsql {SELECT count(*) FROM table2}
|
|
} {3000}
|
|
do_test delete-6.3 {
|
|
execsql {SELECT f1 FROM table1 WHERE f1<10 ORDER BY f1}
|
|
} {1 2 3 4 5 6 7 8 9}
|
|
do_test delete-6.4 {
|
|
execsql {SELECT f1 FROM table2 WHERE f1<10 ORDER BY f1}
|
|
} {1 2 3 4 5 6 7 8 9}
|
|
do_test delete-6.5.1 {
|
|
execsql {DELETE FROM table1 WHERE f1>7}
|
|
db changes
|
|
} {2993}
|
|
do_test delete-6.5.2 {
|
|
execsql {SELECT f1 FROM table1 ORDER BY f1}
|
|
} {1 2 3 4 5 6 7}
|
|
do_test delete-6.6 {
|
|
execsql {DELETE FROM table2 WHERE f1>7}
|
|
execsql {SELECT f1 FROM table2 ORDER BY f1}
|
|
} {1 2 3 4 5 6 7}
|
|
do_test delete-6.7 {
|
|
execsql {DELETE FROM table1}
|
|
execsql {SELECT f1 FROM table1}
|
|
} {}
|
|
do_test delete-6.8 {
|
|
execsql {INSERT INTO table1 VALUES(2,3)}
|
|
execsql {SELECT f1 FROM table1}
|
|
} {2}
|
|
do_test delete-6.9 {
|
|
execsql {DELETE FROM table2}
|
|
execsql {SELECT f1 FROM table2}
|
|
} {}
|
|
do_test delete-6.10 {
|
|
execsql {INSERT INTO table2 VALUES(2,3)}
|
|
execsql {SELECT f1 FROM table2}
|
|
} {2}
|
|
integrity_check delete-6.11
|
|
|
|
do_test delete-7.1 {
|
|
execsql {
|
|
CREATE TABLE t3(a);
|
|
INSERT INTO t3 VALUES(1);
|
|
INSERT INTO t3 SELECT a+1 FROM t3;
|
|
INSERT INTO t3 SELECT a+2 FROM t3;
|
|
SELECT * FROM t3;
|
|
}
|
|
} {1 2 3 4}
|
|
ifcapable {trigger} {
|
|
do_test delete-7.2 {
|
|
execsql {
|
|
CREATE TABLE cnt(del);
|
|
INSERT INTO cnt VALUES(0);
|
|
CREATE TRIGGER r1 AFTER DELETE ON t3 FOR EACH ROW BEGIN
|
|
UPDATE cnt SET del=del+1;
|
|
END;
|
|
DELETE FROM t3 WHERE a<2;
|
|
SELECT * FROM t3;
|
|
}
|
|
} {2 3 4}
|
|
do_test delete-7.3 {
|
|
execsql {
|
|
SELECT * FROM cnt;
|
|
}
|
|
} {1}
|
|
do_test delete-7.4 {
|
|
execsql {
|
|
DELETE FROM t3;
|
|
SELECT * FROM t3;
|
|
}
|
|
} {}
|
|
do_test delete-7.5 {
|
|
execsql {
|
|
SELECT * FROM cnt;
|
|
}
|
|
} {4}
|
|
do_test delete-7.6 {
|
|
execsql {
|
|
INSERT INTO t3 VALUES(1);
|
|
INSERT INTO t3 SELECT a+1 FROM t3;
|
|
INSERT INTO t3 SELECT a+2 FROM t3;
|
|
CREATE TABLE t4 AS SELECT * FROM t3;
|
|
PRAGMA count_changes=ON;
|
|
DELETE FROM t3;
|
|
DELETE FROM t4;
|
|
}
|
|
} {4 4}
|
|
} ;# endif trigger
|
|
ifcapable {!trigger} {
|
|
execsql {DELETE FROM t3}
|
|
}
|
|
integrity_check delete-7.7
|
|
|
|
# Make sure error messages are consistent when attempting to delete
|
|
# from a read-only database. Ticket #304.
|
|
#
|
|
do_test delete-8.0 {
|
|
execsql {
|
|
PRAGMA count_changes=OFF;
|
|
INSERT INTO t3 VALUES(123);
|
|
SELECT * FROM t3;
|
|
}
|
|
} {123}
|
|
db close
|
|
catch {forcedelete test.db-journal}
|
|
catch {file attributes test.db -permissions 0444}
|
|
catch {file attributes test.db -readonly 1}
|
|
sqlite3 db test.db
|
|
set ::DB [sqlite3_connection_pointer db]
|
|
do_test delete-8.1 {
|
|
catchsql {
|
|
DELETE FROM t3;
|
|
}
|
|
} {1 {attempt to write a readonly database}}
|
|
do_test delete-8.2 {
|
|
execsql {SELECT * FROM t3}
|
|
} {123}
|
|
do_test delete-8.3 {
|
|
catchsql {
|
|
DELETE FROM t3 WHERE 1;
|
|
}
|
|
} {1 {attempt to write a readonly database}}
|
|
do_test delete-8.4 {
|
|
execsql {SELECT * FROM t3}
|
|
} {123}
|
|
|
|
# Update for v3: In v2 the DELETE statement would succeed because no
|
|
# database writes actually occur. Version 3 refuses to open a transaction
|
|
# on a read-only file, so the statement fails.
|
|
do_test delete-8.5 {
|
|
catchsql {
|
|
DELETE FROM t3 WHERE a<100;
|
|
}
|
|
# v2 result: {0 {}}
|
|
} {1 {attempt to write a readonly database}}
|
|
do_test delete-8.6 {
|
|
execsql {SELECT * FROM t3}
|
|
} {123}
|
|
integrity_check delete-8.7
|
|
|
|
# Need to do the following for tcl 8.5 on mac. On that configuration, the
|
|
# -readonly flag is taken so seriously that a subsequent [forcedelete]
|
|
# (required before the next test file can be executed) will fail.
|
|
#
|
|
catch {file attributes test.db -readonly 0}
|
|
db close
|
|
forcedelete test.db test.db-journal
|
|
|
|
# The following tests verify that SQLite correctly handles the case
|
|
# where an index B-Tree is being scanned, the rowid column being read
|
|
# from each index entry and another statement deletes some rows from
|
|
# the index B-Tree. At one point this (obscure) scenario was causing
|
|
# SQLite to return spurious SQLITE_CORRUPT errors and arguably incorrect
|
|
# query results.
|
|
#
|
|
do_test delete-9.1 {
|
|
sqlite3 db test.db
|
|
execsql {
|
|
CREATE TABLE t5(a, b);
|
|
CREATE TABLE t6(c, d);
|
|
INSERT INTO t5 VALUES(1, 2);
|
|
INSERT INTO t5 VALUES(3, 4);
|
|
INSERT INTO t5 VALUES(5, 6);
|
|
INSERT INTO t6 VALUES('a', 'b');
|
|
INSERT INTO t6 VALUES('c', 'd');
|
|
CREATE INDEX i5 ON t5(a);
|
|
CREATE INDEX i6 ON t6(c);
|
|
}
|
|
} {}
|
|
do_test delete-9.2 {
|
|
set res [list]
|
|
db eval { SELECT t5.rowid AS r, c, d FROM t5, t6 ORDER BY a } {
|
|
if {$r==2} { db eval { DELETE FROM t5 } }
|
|
lappend res $r $c $d
|
|
}
|
|
set res
|
|
} {1 a b 1 c d 2 a b {} c d}
|
|
do_test delete-9.3 {
|
|
execsql {
|
|
INSERT INTO t5 VALUES(1, 2);
|
|
INSERT INTO t5 VALUES(3, 4);
|
|
INSERT INTO t5 VALUES(5, 6);
|
|
}
|
|
set res [list]
|
|
db eval { SELECT t5.rowid AS r, c, d FROM t5, t6 ORDER BY a } {
|
|
if {$r==2} { db eval { DELETE FROM t5 WHERE rowid = 2 } }
|
|
lappend res $r $c $d
|
|
}
|
|
set res
|
|
} {1 a b 1 c d 2 a b {} c d 3 a b 3 c d}
|
|
do_test delete-9.4 {
|
|
execsql {
|
|
DELETE FROM t5;
|
|
INSERT INTO t5 VALUES(1, 2);
|
|
INSERT INTO t5 VALUES(3, 4);
|
|
INSERT INTO t5 VALUES(5, 6);
|
|
}
|
|
set res [list]
|
|
db eval { SELECT t5.rowid AS r, c, d FROM t5, t6 ORDER BY a } {
|
|
if {$r==2} { db eval { DELETE FROM t5 WHERE rowid = 1 } }
|
|
lappend res $r $c $d
|
|
}
|
|
set res
|
|
} {1 a b 1 c d 2 a b 2 c d 3 a b 3 c d}
|
|
do_test delete-9.5 {
|
|
execsql {
|
|
DELETE FROM t5;
|
|
INSERT INTO t5 VALUES(1, 2);
|
|
INSERT INTO t5 VALUES(3, 4);
|
|
INSERT INTO t5 VALUES(5, 6);
|
|
}
|
|
set res [list]
|
|
db eval { SELECT t5.rowid AS r, c, d FROM t5, t6 ORDER BY a } {
|
|
if {$r==2} { db eval { DELETE FROM t5 WHERE rowid = 3 } }
|
|
lappend res $r $c $d
|
|
}
|
|
set res
|
|
} {1 a b 1 c d 2 a b 2 c d}
|
|
|
|
do_execsql_test delete-10.0 {
|
|
CREATE TABLE t1(a INT UNIQUE, b INT);
|
|
INSERT INTO t1(a,b) VALUES('1','2');
|
|
SELECT * FROM t1 WHERE a='1' AND b='2';
|
|
} {1 2}
|
|
|
|
do_execsql_test delete-10.1 {
|
|
DELETE FROM t1 WHERE a='1' AND b='2';
|
|
}
|
|
|
|
do_execsql_test delete-10.2 {
|
|
SELECT * FROM t1 WHERE a='1' AND b='2';
|
|
}
|
|
|
|
do_execsql_test delete-11.0 {
|
|
CREATE TABLE t11(a INTEGER PRIMARY KEY, b INT);
|
|
WITH RECURSIVE cnt(x) AS (VALUES(1) UNION ALL SELECT x+1 FROM cnt WHERE x<20)
|
|
INSERT INTO t11(a,b) SELECT x, (x*17)%100 FROM cnt;
|
|
SELECT * FROM t11;
|
|
} {1 17 2 34 3 51 4 68 5 85 6 2 7 19 8 36 9 53 10 70 11 87 12 4 13 21 14 38 15 55 16 72 17 89 18 6 19 23 20 40}
|
|
do_execsql_test delete-11.1 {
|
|
DELETE FROM t11 AS xyz
|
|
WHERE EXISTS(SELECT 1 FROM t11 WHERE t11.a>xyz.a AND t11.b<=xyz.b);
|
|
SELECT * FROM t11;
|
|
} {6 2 12 4 18 6 19 23 20 40}
|
|
|
|
|
|
# 2023-03-15
|
|
# https://sqlite.org/forum/forumpost/e61252062c9d286d
|
|
#
|
|
# When the WHERE clause of a DELETE statement contains a subquery
|
|
# which uses the table that is being deleted from and there is a
|
|
# short-circuit operator of some kind in the WHERE clause such that
|
|
# the subquery might not run right away, then the subquery might
|
|
# run after one or more rows have been deleted, which can change
|
|
# the result of the subquery, and result in the wrong answer.
|
|
#
|
|
# Similar problem for UPDATE tested by update-21.4
|
|
# https://sqlite.org/forum/forumpost/0007d1fdb1
|
|
#
|
|
reset_db
|
|
do_execsql_test delete-12.0 {
|
|
CREATE TABLE t0(vkey INTEGER, pkey INTEGER,c1 INTEGER);
|
|
INSERT INTO t0 VALUES(2,1,-20),(2,2,NULL),(2,3,0),(8,4,95);
|
|
DELETE FROM t0 WHERE NOT (
|
|
(t0.vkey <= t0.c1) AND
|
|
(t0.vkey <> (SELECT vkey FROM t0 ORDER BY vkey LIMIT 1 OFFSET 2))
|
|
);
|
|
SELECT * FROM t0;
|
|
} {8 4 95}
|
|
|
|
finish_test
|