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Overview
| Comment: | When coding a trigger, assume that the "oldmask" requires all columns until we know otherwise. That pessimistic assumption assures that all necessary parameters are available on a cascading delete trigger. Ticket [e25d9ea771f] |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: | 03e464be51a1c36fc02cf31178ae91f7 |
| User & Date: | drh 2009-09-17 00:41:20 |
References
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2009-09-17
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| 00:47 | • Fixed ticket [e25d9ea7]: Cascading delete trigger fails. plus 4 other changes artifact: df2f80f3 user: drh | |
Context
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2009-09-19
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| 17:00 | Check in implementation of foreign key constraints. check-in: d5d39981 user: dan tags: trunk | |
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2009-09-17
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| 00:41 | When coding a trigger, assume that the "oldmask" requires all columns until we know otherwise. That pessimistic assumption assures that all necessary parameters are available on a cascading delete trigger. Ticket [e25d9ea771f] check-in: 03e464be user: drh tags: trunk | |
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2009-09-14
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| 23:47 | Make sure sufficient space is allocated for at least one VDBE cursor when autoincrement is used. Ticket [a696379c1f088]. check-in: 2b2a1ef7 user: drh tags: trunk | |
Changes
Changes to src/trigger.c.
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pPrg->pNext = pTop->pTriggerPrg; pTop->pTriggerPrg = pPrg; pPrg->pProgram = pProgram = sqlite3DbMallocZero(db, sizeof(SubProgram)); if( !pProgram ) return 0; pProgram->nRef = 1; pPrg->pTrigger = pTrigger; pPrg->orconf = orconf; /* Allocate and populate a new Parse context to use for coding the ** trigger sub-program. */ pSubParse = sqlite3StackAllocZero(db, sizeof(Parse)); if( !pSubParse ) return 0; memset(&sNC, 0, sizeof(sNC)); sNC.pParse = pSubParse; |
> |
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pPrg->pNext = pTop->pTriggerPrg;
pTop->pTriggerPrg = pPrg;
pPrg->pProgram = pProgram = sqlite3DbMallocZero(db, sizeof(SubProgram));
if( !pProgram ) return 0;
pProgram->nRef = 1;
pPrg->pTrigger = pTrigger;
pPrg->orconf = orconf;
pPrg->oldmask = 0xffffffff;
/* Allocate and populate a new Parse context to use for coding the
** trigger sub-program. */
pSubParse = sqlite3StackAllocZero(db, sizeof(Parse));
if( !pSubParse ) return 0;
memset(&sNC, 0, sizeof(sNC));
sNC.pParse = pSubParse;
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Changes to test/triggerC.test.
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BEGIN;
DELETE FROM t7 WHERE a = 1;
SELECT rowid, * FROM t7;
SELECT * FROM t8;
ROLLBACK;
}
} {2 3 4 3 5 6 8 1 2}
finish_test
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BEGIN;
DELETE FROM t7 WHERE a = 1;
SELECT rowid, * FROM t7;
SELECT * FROM t8;
ROLLBACK;
}
} {2 3 4 3 5 6 8 1 2}
# Ticket [e25d9ea771febc9c311928c1c01c3163dcb26643]
#
do_test triggerC-9.1 {
execsql {
CREATE TABLE t9(a,b);
CREATE INDEX t9b ON t9(b);
INSERT INTO t9 VALUES(1,0);
INSERT INTO t9 VALUES(2,1);
INSERT INTO t9 VALUES(3,2);
INSERT INTO t9 SELECT a+3, a+2 FROM t9;
INSERT INTO t9 SELECT a+6, a+5 FROM t9;
SELECT a FROM t9 ORDER BY a;
}
} {1 2 3 4 5 6 7 8 9 10 11 12}
do_test triggerC-9.2 {
execsql {
CREATE TRIGGER t9r1 AFTER DELETE ON t9 BEGIN
DELETE FROM t9 WHERE b=old.a;
END;
DELETE FROM t9 WHERE b=4;
SELECT a FROM t9 ORDER BY a;
}
} {1 2 3 4}
finish_test
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