Annotation of embedaddon/sqlite3/test/trigger9.test, revision 1.1
1.1 ! misho 1: # 2008 January 1
! 2: #
! 3: # The author disclaims copyright to this source code. In place of
! 4: # a legal notice, here is a blessing:
! 5: #
! 6: # May you do good and not evil.
! 7: # May you find forgiveness for yourself and forgive others.
! 8: # May you share freely, never taking more than you give.
! 9: #
! 10: #***********************************************************************
! 11: # This file implements regression tests for SQLite library. Specifically,
! 12: # it tests some compiler optimizations for SQL statements featuring
! 13: # triggers:
! 14: #
! 15: #
! 16: #
! 17:
! 18: # trigger9-1.* - Test that if there are no references to OLD.* cols, or a
! 19: # reference to only OLD.rowid, the data is not loaded.
! 20: #
! 21: # trigger9-2.* - Test that for NEW.* records populated by UPDATE
! 22: # statements, unused fields are populated with NULL values.
! 23: #
! 24: # trigger9-3.* - Test that the temporary tables used for OLD.* references
! 25: # in "INSTEAD OF" triggers have NULL values in unused
! 26: # fields.
! 27: #
! 28:
! 29: set testdir [file dirname $argv0]
! 30: source $testdir/tester.tcl
! 31: ifcapable {!trigger} {
! 32: finish_test
! 33: return
! 34: }
! 35:
! 36: proc has_rowdata {sql} {
! 37: expr {[lsearch [execsql "explain $sql"] RowData]>=0}
! 38: }
! 39:
! 40: do_test trigger9-1.1 {
! 41: execsql {
! 42: PRAGMA page_size = 1024;
! 43: CREATE TABLE t1(x, y, z);
! 44: INSERT INTO t1 VALUES('1', randstr(10000,10000), '2');
! 45: INSERT INTO t1 VALUES('2', randstr(10000,10000), '4');
! 46: INSERT INTO t1 VALUES('3', randstr(10000,10000), '6');
! 47: CREATE TABLE t2(x);
! 48: }
! 49: } {}
! 50:
! 51: do_test trigger9-1.2.1 {
! 52: execsql {
! 53: BEGIN;
! 54: CREATE TRIGGER trig1 BEFORE DELETE ON t1 BEGIN
! 55: INSERT INTO t2 VALUES(old.rowid);
! 56: END;
! 57: DELETE FROM t1;
! 58: SELECT * FROM t2;
! 59: }
! 60: } {1 2 3}
! 61: do_test trigger9-1.2.3 {
! 62: has_rowdata {DELETE FROM t1}
! 63: } 0
! 64: do_test trigger9-1.2.4 { execsql { ROLLBACK } } {}
! 65:
! 66: do_test trigger9-1.3.1 {
! 67: execsql {
! 68: BEGIN;
! 69: CREATE TRIGGER trig1 BEFORE DELETE ON t1 BEGIN
! 70: INSERT INTO t2 VALUES(old.x);
! 71: END;
! 72: DELETE FROM t1;
! 73: SELECT * FROM t2;
! 74: }
! 75: } {1 2 3}
! 76: do_test trigger9-1.3.2 {
! 77: has_rowdata {DELETE FROM t1}
! 78: } 0
! 79: do_test trigger9-1.3.3 { execsql { ROLLBACK } } {}
! 80:
! 81: do_test trigger9-1.4.1 {
! 82: execsql {
! 83: BEGIN;
! 84: CREATE TRIGGER trig1 BEFORE DELETE ON t1 WHEN old.x='1' BEGIN
! 85: INSERT INTO t2 VALUES(old.rowid);
! 86: END;
! 87: DELETE FROM t1;
! 88: SELECT * FROM t2;
! 89: }
! 90: } {1}
! 91: do_test trigger9-1.4.2 {
! 92: has_rowdata {DELETE FROM t1}
! 93: } 0
! 94: do_test trigger9-1.4.3 { execsql { ROLLBACK } } {}
! 95:
! 96: do_test trigger9-1.5.1 {
! 97: execsql {
! 98: BEGIN;
! 99: CREATE TRIGGER trig1 BEFORE UPDATE ON t1 BEGIN
! 100: INSERT INTO t2 VALUES(old.rowid);
! 101: END;
! 102: UPDATE t1 SET y = '';
! 103: SELECT * FROM t2;
! 104: }
! 105: } {1 2 3}
! 106: do_test trigger9-1.5.2 {
! 107: has_rowdata {UPDATE t1 SET y = ''}
! 108: } 0
! 109: do_test trigger9-1.5.3 { execsql { ROLLBACK } } {}
! 110:
! 111: do_test trigger9-1.6.1 {
! 112: execsql {
! 113: BEGIN;
! 114: CREATE TRIGGER trig1 BEFORE UPDATE ON t1 BEGIN
! 115: INSERT INTO t2 VALUES(old.x);
! 116: END;
! 117: UPDATE t1 SET y = '';
! 118: SELECT * FROM t2;
! 119: }
! 120: } {1 2 3}
! 121: do_test trigger9-1.6.2 {
! 122: has_rowdata {UPDATE t1 SET y = ''}
! 123: } 0
! 124: do_test trigger9-1.6.3 { execsql { ROLLBACK } } {}
! 125:
! 126: do_test trigger9-1.7.1 {
! 127: execsql {
! 128: BEGIN;
! 129: CREATE TRIGGER trig1 BEFORE UPDATE ON t1 WHEN old.x>='2' BEGIN
! 130: INSERT INTO t2 VALUES(old.x);
! 131: END;
! 132: UPDATE t1 SET y = '';
! 133: SELECT * FROM t2;
! 134: }
! 135: } {2 3}
! 136: do_test trigger9-1.7.2 {
! 137: has_rowdata {UPDATE t1 SET y = ''}
! 138: } 0
! 139: do_test trigger9-1.7.3 { execsql { ROLLBACK } } {}
! 140:
! 141: do_test trigger9-3.1 {
! 142: execsql {
! 143: CREATE TABLE t3(a, b);
! 144: INSERT INTO t3 VALUES(1, 'one');
! 145: INSERT INTO t3 VALUES(2, 'two');
! 146: INSERT INTO t3 VALUES(3, 'three');
! 147: }
! 148: } {}
! 149: do_test trigger9-3.2 {
! 150: execsql {
! 151: BEGIN;
! 152: CREATE VIEW v1 AS SELECT * FROM t3;
! 153: CREATE TRIGGER trig1 INSTEAD OF UPDATE ON v1 BEGIN
! 154: INSERT INTO t2 VALUES(old.a);
! 155: END;
! 156: UPDATE v1 SET b = 'hello';
! 157: SELECT * FROM t2;
! 158: ROLLBACK;
! 159: }
! 160: } {1 2 3}
! 161: do_test trigger9-3.3 {
! 162: # In this test the 'c' column of the view is not required by
! 163: # the INSTEAD OF trigger, but the expression is reused internally as
! 164: # part of the view's WHERE clause. Check that this does not cause
! 165: # a problem.
! 166: #
! 167: execsql {
! 168: BEGIN;
! 169: CREATE VIEW v1 AS SELECT a, b AS c FROM t3 WHERE c > 'one';
! 170: CREATE TRIGGER trig1 INSTEAD OF UPDATE ON v1 BEGIN
! 171: INSERT INTO t2 VALUES(old.a);
! 172: END;
! 173: UPDATE v1 SET c = 'hello';
! 174: SELECT * FROM t2;
! 175: ROLLBACK;
! 176: }
! 177: } {2 3}
! 178: do_test trigger9-3.4 {
! 179: execsql {
! 180: BEGIN;
! 181: INSERT INTO t3 VALUES(3, 'three');
! 182: INSERT INTO t3 VALUES(3, 'four');
! 183: CREATE VIEW v1 AS SELECT DISTINCT a, b FROM t3;
! 184: CREATE TRIGGER trig1 INSTEAD OF UPDATE ON v1 BEGIN
! 185: INSERT INTO t2 VALUES(old.a);
! 186: END;
! 187: UPDATE v1 SET b = 'hello';
! 188: SELECT * FROM t2;
! 189: ROLLBACK;
! 190: }
! 191: } {1 2 3 3}
! 192:
! 193: ifcapable compound {
! 194: do_test trigger9-3.5 {
! 195: execsql {
! 196: BEGIN;
! 197: INSERT INTO t3 VALUES(1, 'uno');
! 198: CREATE VIEW v1 AS SELECT a, b FROM t3 EXCEPT SELECT 1, 'one';
! 199: CREATE TRIGGER trig1 INSTEAD OF UPDATE ON v1 BEGIN
! 200: INSERT INTO t2 VALUES(old.a);
! 201: END;
! 202: UPDATE v1 SET b = 'hello';
! 203: SELECT * FROM t2;
! 204: ROLLBACK;
! 205: }
! 206: } {1 2 3}
! 207: do_test trigger9-3.6 {
! 208: execsql {
! 209: BEGIN;
! 210: INSERT INTO t3 VALUES(1, 'zero');
! 211: CREATE VIEW v1 AS
! 212: SELECT sum(a) AS a, max(b) AS b FROM t3 GROUP BY t3.a HAVING b>'two';
! 213: CREATE TRIGGER trig1 INSTEAD OF UPDATE ON v1 BEGIN
! 214: INSERT INTO t2 VALUES(old.a);
! 215: END;
! 216: UPDATE v1 SET b = 'hello';
! 217: SELECT * FROM t2;
! 218: ROLLBACK;
! 219: }
! 220: } {2}
! 221: }
! 222:
! 223: finish_test
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