Many hyperlinks are disabled.
Use anonymous login
to enable hyperlinks.
Overview
| Comment: | Consolidate two branches of code in the "PRAGMA foreign_key_check" implementation. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: |
69f51f838abcf57b35e41f7a10fbb45f |
| User & Date: | dan 2017-04-17 18:42:33 |
Context
|
2017-04-17
| ||
| 20:50 | Do not allow a Mem object to be both NULL and some other type at the same time. check-in: e698db19 user: drh tags: trunk | |
| 18:42 | Consolidate two branches of code in the "PRAGMA foreign_key_check" implementation. check-in: 69f51f83 user: dan tags: trunk | |
| 18:02 | Fix a problem in "PRAGMA foreign_key_check" in handling a WITHOUT ROWID child table with an INTEGER PRIMARY KEY parent key. Also, if an FK violation is detected in a WITHOUT ROWID child table, do not try to read and return the rowid. The second column returned by "PRAGMA foreign_key_check" in this case (WITHOUT ROWID child table) is now always set to NULL. check-in: 690870bd user: dan tags: trunk | |
Changes
Changes to src/pragma.c.
1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 |
pIdx = 0;
aiCols = 0;
if( pParent ){
x = sqlite3FkLocateIndex(pParse, pParent, pFK, &pIdx, &aiCols);
assert( x==0 );
}
addrOk = sqlite3VdbeMakeLabel(v);
if( pParent && pIdx==0 ){
int iKey = pFK->aCol[0].iFrom;
assert( iKey>=0 && iKey<pTab->nCol );
if( iKey!=pTab->iPKey ){
sqlite3ExprCodeGetColumnOfTable(
v, pTab, 0, pFK->aCol[0].iFrom, regRow);
sqlite3VdbeAddOp2(v, OP_IsNull, regRow, addrOk); VdbeCoverage(v);
}else{
sqlite3VdbeAddOp2(v, OP_Rowid, 0, regRow);
}
sqlite3VdbeAddOp3(v, OP_SeekRowid, i, 0, regRow); VdbeCoverage(v);
sqlite3VdbeGoto(v, addrOk);
sqlite3VdbeJumpHere(v, sqlite3VdbeCurrentAddr(v)-2);
}else{
for(j=0; j<pFK->nCol; j++){
sqlite3ExprCodeGetColumnOfTable(v, pTab, 0,
aiCols ? aiCols[j] : pFK->aCol[j].iFrom, regRow+j);
sqlite3VdbeAddOp2(v, OP_IsNull, regRow+j, addrOk); VdbeCoverage(v);
}
if( pParent ){
sqlite3VdbeAddOp4(v, OP_MakeRecord, regRow, pFK->nCol, regKey,
sqlite3IndexAffinityStr(db,pIdx), pFK->nCol);
sqlite3VdbeAddOp4Int(v, OP_Found, i, addrOk, regKey, 0);
VdbeCoverage(v);
}
}
if( HasRowid(pTab) ){
sqlite3VdbeAddOp2(v, OP_Rowid, 0, regResult+1);
}else{
sqlite3VdbeAddOp2(v, OP_Null, 0, regResult+1);
}
sqlite3VdbeMultiLoad(v, regResult+2, "si", pFK->zTo, i-1);
sqlite3VdbeAddOp2(v, OP_ResultRow, regResult, 4);
|
< < < < < < < < < | < < < < > > > > | > | < | | > > > | | | | | > > > > > | | > |
1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 |
pIdx = 0;
aiCols = 0;
if( pParent ){
x = sqlite3FkLocateIndex(pParse, pParent, pFK, &pIdx, &aiCols);
assert( x==0 );
}
addrOk = sqlite3VdbeMakeLabel(v);
/* Generate code to read the child key values into registers
** regRow..regRow+n. If any of the child key values are NULL, this
** row cannot cause an FK violation. Jump directly to addrOk in
** this case. */
for(j=0; j<pFK->nCol; j++){
int iCol = aiCols ? aiCols[j] : pFK->aCol[j].iFrom;
sqlite3ExprCodeGetColumnOfTable(v, pTab, 0, iCol, regRow+j);
sqlite3VdbeAddOp2(v, OP_IsNull, regRow+j, addrOk); VdbeCoverage(v);
}
/* Generate code to query the parent index for a matching parent
** key. If a match is found, jump to addrOk. */
if( pIdx ){
sqlite3VdbeAddOp4(v, OP_MakeRecord, regRow, pFK->nCol, regKey,
sqlite3IndexAffinityStr(db,pIdx), pFK->nCol);
sqlite3VdbeAddOp4Int(v, OP_Found, i, addrOk, regKey, 0);
VdbeCoverage(v);
}else if( pParent ){
int jmp = sqlite3VdbeCurrentAddr(v)+2;
sqlite3VdbeAddOp3(v, OP_SeekRowid, i, jmp, regRow); VdbeCoverage(v);
sqlite3VdbeGoto(v, addrOk);
assert( pFK->nCol==1 );
}
/* Generate code to report an FK violation to the caller. */
if( HasRowid(pTab) ){
sqlite3VdbeAddOp2(v, OP_Rowid, 0, regResult+1);
}else{
sqlite3VdbeAddOp2(v, OP_Null, 0, regResult+1);
}
sqlite3VdbeMultiLoad(v, regResult+2, "si", pFK->zTo, i-1);
sqlite3VdbeAddOp2(v, OP_ResultRow, regResult, 4);
|
Changes to test/fkey5.test.
407 408 409 410 411 412 413 414 415 |
do_execsql_test 10.2 {
PRAGMA foreign_key_check;
}
do_execsql_test 10.3 {
INSERT INTO c30 VALUES(45, 45);
PRAGMA foreign_key_check;
} {c30 {} p30 0}
finish_test
|
> > > > > > > > > > > > |
407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 |
do_execsql_test 10.2 {
PRAGMA foreign_key_check;
}
do_execsql_test 10.3 {
INSERT INTO c30 VALUES(45, 45);
PRAGMA foreign_key_check;
} {c30 {} p30 0}
#-------------------------------------------------------------------------
# Test "foreign key mismatch" errors.
#
reset_db
do_execsql_test 11.0 {
CREATE TABLE tt(y);
CREATE TABLE c11(x REFERENCES tt(y));
}
do_catchsql_test 11.1 {
PRAGMA foreign_key_check;
} {1 {foreign key mismatch - "c11" referencing "tt"}}
finish_test
|