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Overview
| Comment: | Fix a problem causing non-covered WHERE terms to be evaluated before covered WHERE terms. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | defer-where-subqueries |
| Files: | files | file ages | folders |
| SHA3-256: |
7d3cb39f60951dcec1ff87da2c4ec998 |
| User & Date: | dan 2017-07-10 14:39:42 |
Context
|
2017-07-10
| ||
| 15:17 | Fix another problem on this branch. check-in: a4fc9811 user: dan tags: defer-where-subqueries | |
| 14:39 | Fix a problem causing non-covered WHERE terms to be evaluated before covered WHERE terms. check-in: 7d3cb39f user: dan tags: defer-where-subqueries | |
| 14:33 | When testing non-indexed WHERE constraints, test those that involve correlated sub-queries last of all. This increases the chances of not having to run the sub-query at all. check-in: 1f9c1f35 user: dan tags: defer-where-subqueries | |
Changes
Changes to src/wherecode.c.
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}
pE = pTerm->pExpr;
assert( pE!=0 );
if( pLevel->iLeftJoin && !ExprHasProperty(pE, EP_FromJoin) ){
continue;
}
if( iNext==1 && !sqlite3ExprCoveredByIndex(pE, pLevel->iTabCur, pIdx) ){
iNext = 2;
continue;
}
if( iLoop<3 && (pE->flags & EP_VarSelect) ){
if( iNext==0 ) iNext = 3;
continue;
}
|
| |
2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 |
}
pE = pTerm->pExpr;
assert( pE!=0 );
if( pLevel->iLeftJoin && !ExprHasProperty(pE, EP_FromJoin) ){
continue;
}
if( iLoop==1 && !sqlite3ExprCoveredByIndex(pE, pLevel->iTabCur, pIdx) ){
iNext = 2;
continue;
}
if( iLoop<3 && (pE->flags & EP_VarSelect) ){
if( iNext==0 ) iNext = 3;
continue;
}
|