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Small performance optimization in sqlite3WhereGetMask().

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FossilOrigin-Name: 7edec54ab045c0493fc5d27d47d7bf0e08d3b0b298f428646fd3f0ee24dfcade
This commit is contained in:
drh
2021-12-02 04:00:45 +00:00
parent 79ab384121
commit dae2a10934
4 changed files with 19 additions and 21 deletions
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13
src/whereInt.h
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@@ -292,11 +292,11 @@ struct WhereScan {
WhereClause *pWC; /* WhereClause currently being scanned */
const char *zCollName; /* Required collating sequence, if not NULL */
Expr *pIdxExpr; /* Search for this index expression */
char idxaff; /* Must match this affinity, if zCollName!=NULL */
unsigned char nEquiv; /* Number of entries in aiCur[] and aiColumn[] */
unsigned char iEquiv; /* Next unused slot in aiCur[] and aiColumn[] */
u32 opMask; /* Acceptable operators */
int k; /* Resume scanning at this->pWC->a[this->k] */
u32 opMask; /* Acceptable operators */
char idxaff; /* Must match this affinity, if zCollName!=NULL */
unsigned char iEquiv; /* Current slot in aiCur[] and aiColumn[] */
unsigned char nEquiv; /* Number of entries in aiCur[] and aiColumn[] */
int aiCur[11]; /* Cursors in the equivalence class */
i16 aiColumn[11]; /* Corresponding column number in the eq-class */
};
@@ -377,11 +377,6 @@ struct WhereMaskSet {
int ix[BMS]; /* Cursor assigned to each bit */
};
/*
** Initialize a WhereMaskSet object
*/
#define initMaskSet(P) (P)->n=0
/*
** This object is a convenience wrapper holding all information needed
** to construct WhereLoop objects for a particular query.