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Overview
| Comment: | Fix a problem causing SQLite to return false "foreign key violation" errors when there is a partial (i.e. WHERE constrained) UNIQUE index on the parent key columns. This bug did not cause SQLite to allow illegal data to be inserted into the database, only to reject legal operations. |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
850877d1ea43104cc215353414b870c3 |
| User & Date: | dan 2016-12-13 16:57:49 |
Context
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2016-12-13
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| 18:47 | Convert sqlite3PagerGet() into a pointer-dispatched virtual method. This makes it about 25% faster. check-in: 7f88bb44 user: drh tags: trunk | |
| 16:57 | Fix a problem causing SQLite to return false "foreign key violation" errors when there is a partial (i.e. WHERE constrained) UNIQUE index on the parent key columns. This bug did not cause SQLite to allow illegal data to be inserted into the database, only to reject legal operations. check-in: 850877d1 user: dan tags: trunk | |
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2016-12-12
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| 23:24 | Add the --mmap option to the speedtest1 program and to the speed-check.sh script that is frequently used to run speedtest1. check-in: 1a636d5e user: drh tags: trunk | |
Changes
Changes to src/fkey.c.
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assert( nCol>1 );
aiCol = (int *)sqlite3DbMallocRawNN(pParse->db, nCol*sizeof(int));
if( !aiCol ) return 1;
*paiCol = aiCol;
}
for(pIdx=pParent->pIndex; pIdx; pIdx=pIdx->pNext){
if( pIdx->nKeyCol==nCol && IsUniqueIndex(pIdx) ){
/* pIdx is a UNIQUE index (or a PRIMARY KEY) and has the right number
** of columns. If each indexed column corresponds to a foreign key
** column of pFKey, then this index is a winner. */
if( zKey==0 ){
/* If zKey is NULL, then this foreign key is implicitly mapped to
** the PRIMARY KEY of table pParent. The PRIMARY KEY index may be
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assert( nCol>1 );
aiCol = (int *)sqlite3DbMallocRawNN(pParse->db, nCol*sizeof(int));
if( !aiCol ) return 1;
*paiCol = aiCol;
}
for(pIdx=pParent->pIndex; pIdx; pIdx=pIdx->pNext){
if( pIdx->nKeyCol==nCol && IsUniqueIndex(pIdx) && pIdx->pPartIdxWhere==0 ){
/* pIdx is a UNIQUE index (or a PRIMARY KEY) and has the right number
** of columns. If each indexed column corresponds to a foreign key
** column of pFKey, then this index is a winner. */
if( zKey==0 ){
/* If zKey is NULL, then this foreign key is implicitly mapped to
** the PRIMARY KEY of table pParent. The PRIMARY KEY index may be
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Changes to test/fkey1.test.
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# This file implements regression tests for SQLite library.
#
# This file implements tests for foreign keys.
#
set testdir [file dirname $argv0]
source $testdir/tester.tcl
ifcapable {!foreignkey} {
finish_test
return
}
# Create a table and some data to work with.
................................................................................
INSERT OR REPLACE INTO Foo(Id, ParentId, C1) VALUES (2, 1, 'A-2-1');
INSERT OR REPLACE INTO Foo(Id, ParentId, C1) VALUES (3, 2, 'A-3-2');
INSERT OR REPLACE INTO Foo(Id, ParentId, C1) VALUES (4, 3, 'A-4-3');
}
do_catchsql_test fkey1-5.4 {
INSERT OR REPLACE INTO Foo(Id, ParentId, C1) VALUES (2, 3, 'A-2-3');
} {1 {FOREIGN KEY constraint failed}}
finish_test
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# This file implements regression tests for SQLite library. # # This file implements tests for foreign keys. # set testdir [file dirname $argv0] source $testdir/tester.tcl set testprefix fkey1 ifcapable {!foreignkey} { finish_test return } # Create a table and some data to work with. ................................................................................ INSERT OR REPLACE INTO Foo(Id, ParentId, C1) VALUES (2, 1, 'A-2-1'); INSERT OR REPLACE INTO Foo(Id, ParentId, C1) VALUES (3, 2, 'A-3-2'); INSERT OR REPLACE INTO Foo(Id, ParentId, C1) VALUES (4, 3, 'A-4-3'); } do_catchsql_test fkey1-5.4 { INSERT OR REPLACE INTO Foo(Id, ParentId, C1) VALUES (2, 3, 'A-2-3'); } {1 {FOREIGN KEY constraint failed}} #------------------------------------------------------------------------- # Check that foreign key processing is not fooled by partial indexes # on the parent table. # do_execsql_test 6.0 { CREATE TABLE p1(x, y); CREATE UNIQUE INDEX p1x ON p1(x) WHERE y<2; INSERT INTO p1 VALUES(1, 1); CREATE TABLE c1(a REFERENCES p1(x)); } do_catchsql_test 6.1 { INSERT INTO c1 VALUES(1); } {1 {foreign key mismatch - "c1" referencing "p1"}} do_execsql_test 6.2 { CREATE UNIQUE INDEX p1x2 ON p1(x); INSERT INTO c1 VALUES(1); } {} finish_test |