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254 lines
6.2 KiB
Plaintext
254 lines
6.2 KiB
Plaintext
# 2008 January 1
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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. Specifically,
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# it tests some compiler optimizations for SQL statements featuring
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# triggers:
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#
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#
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#
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# trigger9-1.* - Test that if there are no references to OLD.* cols, or a
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# reference to only OLD.rowid, the data is not loaded.
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#
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# trigger9-2.* - Test that for NEW.* records populated by UPDATE
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# statements, unused fields are populated with NULL values.
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#
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# trigger9-3.* - Test that the temporary tables used for OLD.* references
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# in "INSTEAD OF" triggers have NULL values in unused
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# fields.
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#
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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ifcapable {!trigger} {
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finish_test
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return
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}
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set ::testprefix trigger9
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proc has_rowdata {sql} {
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expr {[lsearch [execsql "explain $sql"] RowData]>=0}
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}
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do_test trigger9-1.1 {
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execsql {
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PRAGMA page_size = 1024;
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CREATE TABLE t1(x, y, z);
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INSERT INTO t1 VALUES('1', randstr(10000,10000), '2');
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INSERT INTO t1 VALUES('2', randstr(10000,10000), '4');
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INSERT INTO t1 VALUES('3', randstr(10000,10000), '6');
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CREATE TABLE t2(x);
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}
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} {}
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do_test trigger9-1.2.1 {
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execsql {
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BEGIN;
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CREATE TRIGGER trig1 BEFORE DELETE ON t1 BEGIN
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INSERT INTO t2 VALUES(old.rowid);
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END;
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DELETE FROM t1;
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SELECT * FROM t2;
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}
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} {1 2 3}
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do_test trigger9-1.2.3 {
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has_rowdata {DELETE FROM t1}
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} 0
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do_test trigger9-1.2.4 { execsql { ROLLBACK } } {}
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do_test trigger9-1.3.1 {
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execsql {
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BEGIN;
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CREATE TRIGGER trig1 BEFORE DELETE ON t1 BEGIN
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INSERT INTO t2 VALUES(old.x);
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END;
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DELETE FROM t1;
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SELECT * FROM t2;
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}
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} {1 2 3}
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do_test trigger9-1.3.2 {
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has_rowdata {DELETE FROM t1}
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} 0
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do_test trigger9-1.3.3 { execsql { ROLLBACK } } {}
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do_test trigger9-1.4.1 {
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execsql {
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BEGIN;
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CREATE TRIGGER trig1 BEFORE DELETE ON t1 WHEN old.x='1' BEGIN
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INSERT INTO t2 VALUES(old.rowid);
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END;
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DELETE FROM t1;
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SELECT * FROM t2;
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}
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} {1}
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do_test trigger9-1.4.2 {
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has_rowdata {DELETE FROM t1}
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} 0
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do_test trigger9-1.4.3 { execsql { ROLLBACK } } {}
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do_test trigger9-1.5.1 {
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execsql {
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BEGIN;
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CREATE TRIGGER trig1 BEFORE UPDATE ON t1 BEGIN
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INSERT INTO t2 VALUES(old.rowid);
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END;
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UPDATE t1 SET y = '';
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SELECT * FROM t2;
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}
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} {1 2 3}
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do_test trigger9-1.5.2 {
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has_rowdata {UPDATE t1 SET y = ''}
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} 0
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do_test trigger9-1.5.3 { execsql { ROLLBACK } } {}
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do_test trigger9-1.6.1 {
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execsql {
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BEGIN;
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CREATE TRIGGER trig1 BEFORE UPDATE ON t1 BEGIN
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INSERT INTO t2 VALUES(old.x);
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END;
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UPDATE t1 SET y = '';
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SELECT * FROM t2;
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}
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} {1 2 3}
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do_test trigger9-1.6.2 {
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has_rowdata {UPDATE t1 SET y = ''}
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} 0
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do_test trigger9-1.6.3 { execsql { ROLLBACK } } {}
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do_test trigger9-1.7.1 {
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execsql {
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BEGIN;
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CREATE TRIGGER trig1 BEFORE UPDATE ON t1 WHEN old.x>='2' BEGIN
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INSERT INTO t2 VALUES(old.x);
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END;
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UPDATE t1 SET y = '';
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SELECT * FROM t2;
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}
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} {2 3}
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do_test trigger9-1.7.2 {
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has_rowdata {UPDATE t1 SET y = ''}
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} 0
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do_test trigger9-1.7.3 { execsql { ROLLBACK } } {}
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do_test trigger9-3.1 {
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execsql {
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CREATE TABLE t3(a, b);
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INSERT INTO t3 VALUES(1, 'one');
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INSERT INTO t3 VALUES(2, 'two');
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INSERT INTO t3 VALUES(3, 'three');
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}
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} {}
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do_test trigger9-3.2 {
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execsql {
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BEGIN;
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CREATE VIEW v1 AS SELECT * FROM t3;
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CREATE TRIGGER trig1 INSTEAD OF UPDATE ON v1 BEGIN
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INSERT INTO t2 VALUES(old.a);
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END;
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UPDATE v1 SET b = 'hello';
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SELECT * FROM t2;
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ROLLBACK;
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}
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} {1 2 3}
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do_test trigger9-3.3 {
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# In this test the 'c' column of the view is not required by
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# the INSTEAD OF trigger, but the expression is reused internally as
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# part of the view's WHERE clause. Check that this does not cause
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# a problem.
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#
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execsql {
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BEGIN;
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CREATE VIEW v1 AS SELECT a, b AS c FROM t3 WHERE c > 'one';
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CREATE TRIGGER trig1 INSTEAD OF UPDATE ON v1 BEGIN
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INSERT INTO t2 VALUES(old.a);
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END;
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UPDATE v1 SET c = 'hello';
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SELECT * FROM t2;
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ROLLBACK;
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}
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} {2 3}
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do_test trigger9-3.4 {
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execsql {
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BEGIN;
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INSERT INTO t3 VALUES(3, 'three');
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INSERT INTO t3 VALUES(3, 'four');
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CREATE VIEW v1 AS SELECT DISTINCT a, b FROM t3;
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CREATE TRIGGER trig1 INSTEAD OF UPDATE ON v1 BEGIN
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INSERT INTO t2 VALUES(old.a);
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END;
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UPDATE v1 SET b = 'hello';
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SELECT * FROM t2;
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ROLLBACK;
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}
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} {1 2 3 3}
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ifcapable compound {
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do_test trigger9-3.5 {
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execsql {
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BEGIN;
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INSERT INTO t3 VALUES(1, 'uno');
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CREATE VIEW v1 AS SELECT a, b FROM t3 EXCEPT SELECT 1, 'one';
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CREATE TRIGGER trig1 INSTEAD OF UPDATE ON v1 BEGIN
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INSERT INTO t2 VALUES(old.a);
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END;
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UPDATE v1 SET b = 'hello';
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SELECT * FROM t2;
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ROLLBACK;
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}
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} {1 2 3}
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do_test trigger9-3.6 {
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execsql {
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BEGIN;
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INSERT INTO t3 VALUES(1, 'zero');
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CREATE VIEW v1 AS
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SELECT sum(a) AS a, max(b) AS b FROM t3 GROUP BY t3.a HAVING b>'two';
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CREATE TRIGGER trig1 INSTEAD OF UPDATE ON v1 BEGIN
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INSERT INTO t2 VALUES(old.a);
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END;
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UPDATE v1 SET b = 'hello';
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SELECT * FROM t2;
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ROLLBACK;
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}
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} {2}
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}
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reset_db
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do_execsql_test 4.1 {
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CREATE TABLE t1(a, b);
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CREATE TABLE log(x);
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INSERT INTO t1 VALUES(1, 2);
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INSERT INTO t1 VALUES(3, 4);
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CREATE VIEW v1 AS SELECT a, b FROM t1;
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CREATE TRIGGER tr1 INSTEAD OF DELETE ON v1 BEGIN
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INSERT INTO log VALUES('delete');
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END;
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CREATE TRIGGER tr2 INSTEAD OF UPDATE ON v1 BEGIN
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INSERT INTO log VALUES('update');
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END;
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CREATE TRIGGER tr3 INSTEAD OF INSERT ON v1 BEGIN
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INSERT INTO log VALUES('insert');
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END;
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}
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do_catchsql_test 4.2 {
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DELETE FROM v1 WHERE rowid=1;
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} {1 {no such column: rowid}}
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do_catchsql_test 4.3 {
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UPDATE v1 SET a=b WHERE rowid=2;
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} {1 {no such column: rowid}}
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finish_test
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