#pragma ident "%Z%%M% %I% %E% SMI"
# 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 1.13 2003/06/15 23:42:25 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}
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 {
execsql {DELETE FROM table1 WHERE f1=2}
} {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==$i"
}
execsql {SELECT count(*) FROM table1}
} {150}
do_test delete-5.4 {
execsql "DELETE FROM table1 WHERE f1>50"
execsql {SELECT count(*) FROM table1}
} {37}
do_test delete-5.5 {
for {set i 1} {$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==$i"
}
execsql {SELECT f1 FROM table1 ORDER BY f1}
} {42 44 47 48 50}
do_test delete-5.7 {
execsql "DELETE FROM table1 WHERE f1!=48"
execsql {SELECT f1 FROM table1 ORDER BY f1}
} {48}
integrity_check delete-5.8
# Delete large quantities of data. We want to test the List overflow
# mechanism in the vdbe.
#
do_test delete-6.1 {
set fd [open data1.txt w]
for {set i 1} {$i<=3000} {incr i} {
puts $fd "[expr {$i}]\t[expr {$i*$i}]"
}
close $fd
execsql {DELETE FROM table1}
execsql {COPY table1 FROM 'data1.txt'}
execsql {DELETE FROM table2}
execsql {COPY table2 FROM 'data1.txt'}
file delete data1.txt
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 {
execsql {DELETE FROM table1 WHERE f1>7}
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}
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}
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 {file attributes test.db -permissions 0444}
catch {file attributes test.db -readonly 1}
sqlite db test.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}
do_test delete-8.5 {
catchsql {
DELETE FROM t3 WHERE a<100;
}
} {0 {}}
do_test delete-8.6 {
execsql {SELECT * FROM t3}
} {123}
integrity_check delete-8.7
finish_test