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Improvements to the HAVING-to-WHERE optimization. The code uses less space

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and less CPU, and there is now ".selecttrace" output.

FossilOrigin-Name: 5ad668d4339397fe66fe085e0527e37a1930917da88d462a8d89a465faa15e28
This commit is contained in:
drh
2018-03-20 18:08:33 +00:00
parent de8113c31e
commit cd0abc24d1
4 changed files with 28 additions and 38 deletions
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src/sqliteInt.h
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@@ -3357,9 +3357,9 @@ struct Walker {
struct CCurHint *pCCurHint; /* Used by codeCursorHint() */
int *aiCol; /* array of column indexes */
struct IdxCover *pIdxCover; /* Check for index coverage */
struct IdxExprTrans *pIdxTrans; /* Convert indexed expr to column */
struct IdxExprTrans *pIdxTrans; /* Convert idxed expr to column */
ExprList *pGroupBy; /* GROUP BY clause */
struct HavingToWhereCtx *pHavingCtx; /* HAVING to WHERE clause ctx */
Select *pSelect; /* HAVING to WHERE clause ctx */
} u;
};