5e3a6ebf34
rather than afterwards, just as it does for PostgreSQL. Add table name aliasing to UPDATE and DELETE. FossilOrigin-Name: 861a2e2a4895f96a5d8e1730e744983b2ac4311d0c2cf201c0e59f409030d5d7
420 lines
11 KiB
Plaintext
420 lines
11 KiB
Plaintext
# 2001 September 15
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#
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# The author disclaims copyright to this source code. In place of
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# a legal notice, here is a blessing:
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#
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# May you do good and not evil.
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# May you find forgiveness for yourself and forgive others.
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# May you share freely, never taking more than you give.
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#
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#***********************************************************************
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# This file implements regression tests for SQLite library. The
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# focus of this file is testing the DELETE FROM statement.
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#
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# $Id: delete.test,v 1.26 2009/06/05 17:09:12 drh Exp $
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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# Try to delete from a non-existant table.
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#
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do_test delete-1.1 {
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set v [catch {execsql {DELETE FROM test1}} msg]
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lappend v $msg
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} {1 {no such table: test1}}
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# Try to delete from sqlite_master
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#
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do_test delete-2.1 {
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set v [catch {execsql {DELETE FROM sqlite_master}} msg]
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lappend v $msg
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} {1 {table sqlite_master may not be modified}}
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# Delete selected entries from a table with and without an index.
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#
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do_test delete-3.1.1 {
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execsql {CREATE TABLE table1(f1 int, f2 int)}
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execsql {INSERT INTO table1 VALUES(1,2)}
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execsql {INSERT INTO table1 VALUES(2,4)}
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execsql {INSERT INTO table1 VALUES(3,8)}
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execsql {INSERT INTO table1 VALUES(4,16)}
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execsql {SELECT * FROM table1 ORDER BY f1}
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} {1 2 2 4 3 8 4 16}
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do_test delete-3.1.2 {
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execsql {DELETE FROM table1 WHERE f1=3}
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} {}
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do_test delete-3.1.3 {
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execsql {SELECT * FROM table1 ORDER BY f1}
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} {1 2 2 4 4 16}
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do_test delete-3.1.4 {
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execsql {CREATE INDEX index1 ON table1(f1)}
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execsql {PRAGMA count_changes=on}
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ifcapable explain {
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execsql {EXPLAIN DELETE FROM table1 WHERE f1=3}
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}
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execsql {DELETE FROM 'table1' WHERE f1=3}
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} {0}
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do_test delete-3.1.5 {
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execsql {SELECT * FROM table1 ORDER BY f1}
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} {1 2 2 4 4 16}
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do_test delete-3.1.6.1 {
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execsql {DELETE FROM table1 WHERE f1=2}
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} {1}
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do_test delete-3.1.6.2 {
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db changes
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} 1
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do_test delete-3.1.7 {
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execsql {SELECT * FROM table1 ORDER BY f1}
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} {1 2 4 16}
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integrity_check delete-3.2
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# Semantic errors in the WHERE clause
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#
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do_test delete-4.1 {
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execsql {CREATE TABLE table2(f1 int, f2 int)}
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set v [catch {execsql {DELETE FROM table2 WHERE f3=5}} msg]
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lappend v $msg
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} {1 {no such column: f3}}
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do_test delete-4.2 {
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set v [catch {execsql {DELETE FROM table2 WHERE xyzzy(f1+4)}} msg]
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lappend v $msg
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} {1 {no such function: xyzzy}}
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integrity_check delete-4.3
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# Lots of deletes
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#
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do_test delete-5.1.1 {
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execsql {DELETE FROM table1}
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} {2}
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do_test delete-5.1.2 {
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execsql {SELECT count(*) FROM table1}
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} {0}
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do_test delete-5.2.1 {
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execsql {BEGIN TRANSACTION}
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for {set i 1} {$i<=200} {incr i} {
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execsql "INSERT INTO table1 VALUES($i,[expr {$i*$i}])"
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}
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execsql {COMMIT}
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execsql {SELECT count(*) FROM table1}
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} {200}
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do_test delete-5.2.2 {
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execsql {DELETE FROM table1}
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} {200}
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do_test delete-5.2.3 {
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execsql {BEGIN TRANSACTION}
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for {set i 1} {$i<=200} {incr i} {
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execsql "INSERT INTO table1 VALUES($i,[expr {$i*$i}])"
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}
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execsql {COMMIT}
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execsql {SELECT count(*) FROM table1}
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} {200}
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do_test delete-5.2.4 {
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execsql {PRAGMA count_changes=off}
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execsql {DELETE FROM table1}
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} {}
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do_test delete-5.2.5 {
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execsql {SELECT count(*) FROM table1}
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} {0}
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do_test delete-5.2.6 {
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execsql {BEGIN TRANSACTION}
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for {set i 1} {$i<=200} {incr i} {
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execsql "INSERT INTO table1 VALUES($i,[expr {$i*$i}])"
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}
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execsql {COMMIT}
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execsql {SELECT count(*) FROM table1}
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} {200}
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do_test delete-5.3 {
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for {set i 1} {$i<=200} {incr i 4} {
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execsql "DELETE FROM table1 WHERE f1==$i"
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}
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execsql {SELECT count(*) FROM table1}
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} {150}
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do_test delete-5.4.1 {
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execsql "DELETE FROM table1 WHERE f1>50"
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db changes
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} [db one {SELECT count(*) FROM table1 WHERE f1>50}]
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do_test delete-5.4.2 {
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execsql {SELECT count(*) FROM table1}
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} {37}
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do_test delete-5.5 {
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for {set i 1} {$i<=70} {incr i 3} {
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execsql "DELETE FROM table1 WHERE f1==$i"
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}
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execsql {SELECT f1 FROM table1 ORDER BY f1}
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} {2 3 6 8 11 12 14 15 18 20 23 24 26 27 30 32 35 36 38 39 42 44 47 48 50}
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do_test delete-5.6 {
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for {set i 1} {$i<40} {incr i} {
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execsql "DELETE FROM table1 WHERE f1==$i"
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}
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execsql {SELECT f1 FROM table1 ORDER BY f1}
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} {42 44 47 48 50}
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do_test delete-5.7 {
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execsql "DELETE FROM table1 WHERE f1!=48"
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execsql {SELECT f1 FROM table1 ORDER BY f1}
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} {48}
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integrity_check delete-5.8
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# Delete large quantities of data. We want to test the List overflow
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# mechanism in the vdbe.
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#
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do_test delete-6.1 {
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execsql {BEGIN; DELETE FROM table1}
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for {set i 1} {$i<=3000} {incr i} {
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execsql "INSERT INTO table1 VALUES($i,[expr {$i*$i}])"
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}
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execsql {DELETE FROM table2}
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for {set i 1} {$i<=3000} {incr i} {
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execsql "INSERT INTO table2 VALUES($i,[expr {$i*$i}])"
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}
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execsql {COMMIT}
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execsql {SELECT count(*) FROM table1}
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} {3000}
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do_test delete-6.2 {
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execsql {SELECT count(*) FROM table2}
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} {3000}
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do_test delete-6.3 {
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execsql {SELECT f1 FROM table1 WHERE f1<10 ORDER BY f1}
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} {1 2 3 4 5 6 7 8 9}
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do_test delete-6.4 {
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execsql {SELECT f1 FROM table2 WHERE f1<10 ORDER BY f1}
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} {1 2 3 4 5 6 7 8 9}
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do_test delete-6.5.1 {
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execsql {DELETE FROM table1 WHERE f1>7}
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db changes
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} {2993}
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do_test delete-6.5.2 {
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execsql {SELECT f1 FROM table1 ORDER BY f1}
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} {1 2 3 4 5 6 7}
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do_test delete-6.6 {
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execsql {DELETE FROM table2 WHERE f1>7}
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execsql {SELECT f1 FROM table2 ORDER BY f1}
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} {1 2 3 4 5 6 7}
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do_test delete-6.7 {
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execsql {DELETE FROM table1}
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execsql {SELECT f1 FROM table1}
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} {}
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do_test delete-6.8 {
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execsql {INSERT INTO table1 VALUES(2,3)}
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execsql {SELECT f1 FROM table1}
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} {2}
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do_test delete-6.9 {
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execsql {DELETE FROM table2}
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execsql {SELECT f1 FROM table2}
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} {}
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do_test delete-6.10 {
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execsql {INSERT INTO table2 VALUES(2,3)}
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execsql {SELECT f1 FROM table2}
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} {2}
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integrity_check delete-6.11
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do_test delete-7.1 {
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execsql {
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CREATE TABLE t3(a);
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INSERT INTO t3 VALUES(1);
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INSERT INTO t3 SELECT a+1 FROM t3;
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INSERT INTO t3 SELECT a+2 FROM t3;
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SELECT * FROM t3;
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}
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} {1 2 3 4}
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ifcapable {trigger} {
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do_test delete-7.2 {
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execsql {
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CREATE TABLE cnt(del);
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INSERT INTO cnt VALUES(0);
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CREATE TRIGGER r1 AFTER DELETE ON t3 FOR EACH ROW BEGIN
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UPDATE cnt SET del=del+1;
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END;
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DELETE FROM t3 WHERE a<2;
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SELECT * FROM t3;
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}
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} {2 3 4}
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do_test delete-7.3 {
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execsql {
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SELECT * FROM cnt;
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}
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} {1}
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do_test delete-7.4 {
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execsql {
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DELETE FROM t3;
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SELECT * FROM t3;
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}
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} {}
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do_test delete-7.5 {
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execsql {
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SELECT * FROM cnt;
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}
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} {4}
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do_test delete-7.6 {
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execsql {
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INSERT INTO t3 VALUES(1);
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INSERT INTO t3 SELECT a+1 FROM t3;
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INSERT INTO t3 SELECT a+2 FROM t3;
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CREATE TABLE t4 AS SELECT * FROM t3;
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PRAGMA count_changes=ON;
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DELETE FROM t3;
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DELETE FROM t4;
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}
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} {4 4}
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} ;# endif trigger
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ifcapable {!trigger} {
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execsql {DELETE FROM t3}
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}
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integrity_check delete-7.7
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# Make sure error messages are consistent when attempting to delete
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# from a read-only database. Ticket #304.
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#
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do_test delete-8.0 {
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execsql {
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PRAGMA count_changes=OFF;
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INSERT INTO t3 VALUES(123);
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SELECT * FROM t3;
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}
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} {123}
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db close
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catch {forcedelete test.db-journal}
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catch {file attributes test.db -permissions 0444}
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catch {file attributes test.db -readonly 1}
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sqlite3 db test.db
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set ::DB [sqlite3_connection_pointer db]
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do_test delete-8.1 {
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catchsql {
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DELETE FROM t3;
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}
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} {1 {attempt to write a readonly database}}
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do_test delete-8.2 {
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execsql {SELECT * FROM t3}
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} {123}
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do_test delete-8.3 {
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catchsql {
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DELETE FROM t3 WHERE 1;
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}
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} {1 {attempt to write a readonly database}}
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do_test delete-8.4 {
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execsql {SELECT * FROM t3}
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} {123}
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# Update for v3: In v2 the DELETE statement would succeed because no
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# database writes actually occur. Version 3 refuses to open a transaction
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# on a read-only file, so the statement fails.
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do_test delete-8.5 {
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catchsql {
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DELETE FROM t3 WHERE a<100;
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}
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# v2 result: {0 {}}
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} {1 {attempt to write a readonly database}}
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do_test delete-8.6 {
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execsql {SELECT * FROM t3}
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} {123}
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integrity_check delete-8.7
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# Need to do the following for tcl 8.5 on mac. On that configuration, the
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# -readonly flag is taken so seriously that a subsequent [forcedelete]
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# (required before the next test file can be executed) will fail.
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#
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catch {file attributes test.db -readonly 0}
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db close
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forcedelete test.db test.db-journal
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# The following tests verify that SQLite correctly handles the case
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# where an index B-Tree is being scanned, the rowid column being read
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# from each index entry and another statement deletes some rows from
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# the index B-Tree. At one point this (obscure) scenario was causing
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# SQLite to return spurious SQLITE_CORRUPT errors and arguably incorrect
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# query results.
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#
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do_test delete-9.1 {
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sqlite3 db test.db
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execsql {
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CREATE TABLE t5(a, b);
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CREATE TABLE t6(c, d);
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INSERT INTO t5 VALUES(1, 2);
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INSERT INTO t5 VALUES(3, 4);
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INSERT INTO t5 VALUES(5, 6);
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INSERT INTO t6 VALUES('a', 'b');
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INSERT INTO t6 VALUES('c', 'd');
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CREATE INDEX i5 ON t5(a);
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CREATE INDEX i6 ON t6(c);
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}
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} {}
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do_test delete-9.2 {
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set res [list]
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db eval { SELECT t5.rowid AS r, c, d FROM t5, t6 ORDER BY a } {
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if {$r==2} { db eval { DELETE FROM t5 } }
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lappend res $r $c $d
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}
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set res
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} {1 a b 1 c d 2 a b {} c d}
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do_test delete-9.3 {
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execsql {
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INSERT INTO t5 VALUES(1, 2);
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INSERT INTO t5 VALUES(3, 4);
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INSERT INTO t5 VALUES(5, 6);
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}
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set res [list]
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db eval { SELECT t5.rowid AS r, c, d FROM t5, t6 ORDER BY a } {
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if {$r==2} { db eval { DELETE FROM t5 WHERE rowid = 2 } }
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lappend res $r $c $d
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}
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set res
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} {1 a b 1 c d 2 a b {} c d 3 a b 3 c d}
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do_test delete-9.4 {
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execsql {
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DELETE FROM t5;
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INSERT INTO t5 VALUES(1, 2);
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INSERT INTO t5 VALUES(3, 4);
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INSERT INTO t5 VALUES(5, 6);
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}
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set res [list]
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db eval { SELECT t5.rowid AS r, c, d FROM t5, t6 ORDER BY a } {
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if {$r==2} { db eval { DELETE FROM t5 WHERE rowid = 1 } }
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lappend res $r $c $d
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}
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set res
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} {1 a b 1 c d 2 a b 2 c d 3 a b 3 c d}
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do_test delete-9.5 {
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execsql {
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DELETE FROM t5;
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INSERT INTO t5 VALUES(1, 2);
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INSERT INTO t5 VALUES(3, 4);
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INSERT INTO t5 VALUES(5, 6);
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}
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set res [list]
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db eval { SELECT t5.rowid AS r, c, d FROM t5, t6 ORDER BY a } {
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if {$r==2} { db eval { DELETE FROM t5 WHERE rowid = 3 } }
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lappend res $r $c $d
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}
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set res
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} {1 a b 1 c d 2 a b 2 c d}
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do_execsql_test delete-10.0 {
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CREATE TABLE t1(a INT UNIQUE, b INT);
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INSERT INTO t1(a,b) VALUES('1','2');
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SELECT * FROM t1 WHERE a='1' AND b='2';
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} {1 2}
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do_execsql_test delete-10.1 {
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DELETE FROM t1 WHERE a='1' AND b='2';
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}
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do_execsql_test delete-10.2 {
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SELECT * FROM t1 WHERE a='1' AND b='2';
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}
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do_execsql_test delete-11.0 {
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CREATE TABLE t11(a INTEGER PRIMARY KEY, b INT);
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WITH RECURSIVE cnt(x) AS (VALUES(1) UNION ALL SELECT x+1 FROM cnt WHERE x<20)
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INSERT INTO t11(a,b) SELECT x, (x*17)%100 FROM cnt;
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SELECT * FROM t11;
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} {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}
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do_execsql_test delete-11.1 {
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DELETE FROM t11 AS xyz
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WHERE EXISTS(SELECT 1 FROM t11 WHERE t11.a>xyz.a AND t11.b<=xyz.b);
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SELECT * FROM t11;
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} {6 2 12 4 18 6 19 23 20 40}
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finish_test
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