| # 2009 December 29 |
| # |
| # 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 tests the effects of SQL variable references embedded in |
| # triggers. If the user attempts to create such a trigger, it is an |
| # error. However, if an existing trigger definition is read from |
| # the sqlite_master table, the variable reference always evaluates |
| # to NULL. |
| # |
| |
| set testdir [file dirname $argv0] |
| source $testdir/tester.tcl |
| ifcapable {!trigger} { |
| finish_test |
| return |
| } |
| set testprefix triggerE |
| |
| do_execsql_test 1.0 { |
| CREATE TABLE t1(a, b); |
| CREATE TABLE t2(c, d); |
| CREATE TABLE t3(e, f); |
| } |
| |
| # forcedelete test.db2 |
| # do_execsql_test 1.1 { |
| # ATTACH 'test.db2' AS aux; |
| # CREATE TABLE aux.t4(x); |
| # INSERT INTO aux.t4 VALUES(5); |
| # |
| # CREATE TRIGGER tr1 AFTER INSERT ON t1 WHEN new.a IN (SELECT x FROM aux.t4) |
| # BEGIN |
| # SELECT 1; |
| # END; |
| # } |
| # do_execsql_test 1.2 { INSERT INTO t1 VALUES(1,1); } |
| # do_execsql_test 1.3 { INSERT INTO t1 VALUES(5,5); } |
| |
| #------------------------------------------------------------------------- |
| # Attempt to create various triggers that use bound variables. |
| # |
| set errmsg "trigger cannot use variables" |
| foreach {tn defn} { |
| 1 { AFTER INSERT ON t1 WHEN new.a = ? BEGIN SELECT 1; END; } |
| 2 { BEFORE DELETE ON t1 BEGIN SELECT ?; END; } |
| 3 { BEFORE DELETE ON t1 BEGIN SELECT * FROM (SELECT * FROM (SELECT ?)); END; } |
| 5 { BEFORE DELETE ON t1 BEGIN SELECT * FROM t2 GROUP BY ?; END; } |
| 6 { BEFORE DELETE ON t1 BEGIN SELECT * FROM t2 LIMIT ?; END; } |
| 7 { BEFORE DELETE ON t1 BEGIN SELECT * FROM t2 ORDER BY ?; END; } |
| 8 { BEFORE UPDATE ON t1 BEGIN UPDATE t2 SET c = ?; END; } |
| 9 { BEFORE UPDATE ON t1 BEGIN UPDATE t2 SET c = 1 WHERE d = ?; END; } |
| 10 { AFTER INSERT ON t1 BEGIN SELECT * FROM pragma_stats(?); END; } |
| } { |
| catchsql {drop trigger tr1} |
| do_catchsql_test 1.1.$tn "CREATE TRIGGER tr1 $defn" [list 1 $errmsg] |
| do_catchsql_test 1.2.$tn "CREATE TEMP TRIGGER tr1 $defn" [list 1 $errmsg] |
| } |
| |
| #------------------------------------------------------------------------- |
| # Test that variable references within trigger definitions loaded from |
| # the sqlite_master table are automatically converted to NULL. |
| # |
| sqlite3_db_config db DEFENSIVE 0 |
| do_execsql_test 2.1 { |
| PRAGMA writable_schema = 1; |
| INSERT INTO sqlite_master VALUES('trigger', 'tr1', 't1', 0, |
| 'CREATE TRIGGER tr1 AFTER INSERT ON t1 BEGIN |
| INSERT INTO t2 VALUES(?1, ?2); |
| END' |
| ); |
| |
| INSERT INTO sqlite_master VALUES('trigger', 'tr2', 't3', 0, |
| 'CREATE TRIGGER tr2 AFTER INSERT ON t3 WHEN ?1 IS NULL BEGIN |
| UPDATE t2 SET c=d WHERE c IS ?2; |
| END' |
| ); |
| } |
| db close |
| sqlite3 db test.db |
| |
| do_execsql_test 2.2.1 { |
| INSERT INTO t1 VALUES(1, 2); |
| SELECT * FROM t2; |
| } {{} {}} |
| do_test 2.2.2 { |
| set one 3 |
| execsql { |
| DELETE FROM t2; |
| INSERT INTO t1 VALUES($one, ?1); |
| SELECT * FROM t2; |
| } |
| } {{} {}} |
| do_execsql_test 2.2.3 { SELECT * FROM t1 } {1 2 3 3} |
| |
| do_execsql_test 2.3 { |
| DELETE FROM t2; |
| INSERT INTO t2 VALUES('x', 'y'); |
| INSERT INTO t2 VALUES(NULL, 'z'); |
| INSERT INTO t3 VALUES(1, 2); |
| SELECT * FROM t3; |
| SELECT * FROM t2; |
| } {1 2 x y z z} |
| |
| finish_test |