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Overview
Comment: | Performance enhancement in the expression walker. |
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Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | trunk |
Files: | files | file ages | folders |
SHA1: |
ebccbd96094ac64de39dbd0d220d3a7a |
User & Date: | drh 2016-08-10 18:56:32.070 |
Context
2016-08-10
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19:43 | List of MATCH operator names in isMatchOfColumn() should be constant. (check-in: 7319d676aa user: drh tags: trunk) | |
18:56 | Performance enhancement in the expression walker. (check-in: ebccbd9609 user: drh tags: trunk) | |
15:02 | Tweaks to pcache1TruncateUnsafe() to make it slightly smaller and faster and easier to test. (check-in: 059f4e2efe user: drh tags: trunk) | |
Changes
Changes to src/walker.c.
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37 38 39 40 41 42 43 | ** and WRC_Continue to continue. */ static SQLITE_NOINLINE int walkExpr(Walker *pWalker, Expr *pExpr){ int rc; testcase( ExprHasProperty(pExpr, EP_TokenOnly) ); testcase( ExprHasProperty(pExpr, EP_Reduced) ); rc = pWalker->xExprCallback(pWalker, pExpr); | < | | | | | | | | < | | 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 | ** and WRC_Continue to continue. */ static SQLITE_NOINLINE int walkExpr(Walker *pWalker, Expr *pExpr){ int rc; testcase( ExprHasProperty(pExpr, EP_TokenOnly) ); testcase( ExprHasProperty(pExpr, EP_Reduced) ); rc = pWalker->xExprCallback(pWalker, pExpr); if( rc || ExprHasProperty(pExpr,EP_TokenOnly) ) return rc & WRC_Abort; if( pExpr->pLeft && walkExpr(pWalker, pExpr->pLeft) ) return WRC_Abort; if( pExpr->pRight && walkExpr(pWalker, pExpr->pRight) ) return WRC_Abort; if( ExprHasProperty(pExpr, EP_xIsSelect) ){ if( sqlite3WalkSelect(pWalker, pExpr->x.pSelect) ) return WRC_Abort; }else{ if( sqlite3WalkExprList(pWalker, pExpr->x.pList) ) return WRC_Abort; } return WRC_Continue; } int sqlite3WalkExpr(Walker *pWalker, Expr *pExpr){ return pExpr ? walkExpr(pWalker,pExpr) : WRC_Continue; } /* ** Call sqlite3WalkExpr() for every expression in list p or until |
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