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Overview
| Comment: | Remove an unreachable branch from the index-on-expression optimization. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: | 2df2cf4f179dd88fb2530dfd338f344ac48dd052ef954dc95a136884523f7aee |
| User & Date: | drh 2018-09-16 18:23:48 |
Context
|
2018-09-17
| ||
| 12:49 | Fix missing space in 'configure.ac' reported on the mailing list. check-in: 96b00a3c user: mistachkin tags: trunk | |
|
2018-09-16
| ||
| 23:27 | First proposed fix for the ALTER TABLE problem described by ticket [b41031ea2b5372378cb3d2d] check-in: 05a9d129 user: drh tags: tkt-b41031ea | |
| 18:23 | Remove an unreachable branch from the index-on-expression optimization. check-in: 2df2cf4f user: drh tags: trunk | |
| 16:34 | Fix a memory leak in the explain extension. check-in: d0c92b04 user: drh tags: trunk | |
Changes
Changes to src/update.c.
91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 |
static int indexColumnIsBeingUpdated(
Index *pIdx, /* The index to check */
int iCol, /* Which column of the index to check */
int *aXRef, /* aXRef[j]>=0 if column j is being updated */
int chngRowid /* true if the rowid is being updated */
){
i16 iIdxCol = pIdx->aiColumn[iCol];
if( iIdxCol>=0 ){
return aXRef[iIdxCol]>=0;
}
if( iIdxCol==XN_ROWID ) return 1;
assert( iIdxCol==XN_EXPR );
assert( pIdx->aColExpr!=0 );
assert( pIdx->aColExpr->a[iCol].pExpr!=0 );
return sqlite3ExprReferencesUpdatedColumn(pIdx->aColExpr->a[iCol].pExpr,
aXRef,chngRowid);
}
|
> < |
91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 |
static int indexColumnIsBeingUpdated(
Index *pIdx, /* The index to check */
int iCol, /* Which column of the index to check */
int *aXRef, /* aXRef[j]>=0 if column j is being updated */
int chngRowid /* true if the rowid is being updated */
){
i16 iIdxCol = pIdx->aiColumn[iCol];
assert( iIdxCol!=XN_ROWID ); /* Cannot index rowid */
if( iIdxCol>=0 ){
return aXRef[iIdxCol]>=0;
}
assert( iIdxCol==XN_EXPR );
assert( pIdx->aColExpr!=0 );
assert( pIdx->aColExpr->a[iCol].pExpr!=0 );
return sqlite3ExprReferencesUpdatedColumn(pIdx->aColExpr->a[iCol].pExpr,
aXRef,chngRowid);
}
|