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Comment:Make sure the whereSplit() routine in the query planner is not confused by the likely() operator.
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SHA1: 588db14ffb4b0e8e76d511b7b1541db3ec78836a
User & Date: drh 2015-04-21 02:12:13
Context
2015-04-21
02:17
Test case for the previous check-in. check-in: a526f58b user: drh tags: trunk
02:12
Make sure the whereSplit() routine in the query planner is not confused by the likely() operator. check-in: 588db14f user: drh tags: trunk
00:23
Enable compilation and VSIX package creation with the Visual Studio 2015 CTP. check-in: 03b725a7 user: mistachkin tags: trunk
Changes
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Changes to src/where.c.

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** does is make slot[] entries point to substructure within pExpr.
**
** In the previous sentence and in the diagram, "slot[]" refers to
** the WhereClause.a[] array.  The slot[] array grows as needed to contain
** all terms of the WHERE clause.
*/
static void whereSplit(WhereClause *pWC, Expr *pExpr, u8 op){

  pWC->op = op;
  if( pExpr==0 ) return;
  if( pExpr->op!=op ){
    whereClauseInsert(pWC, pExpr, 0);
  }else{
    whereSplit(pWC, pExpr->pLeft, op);
    whereSplit(pWC, pExpr->pRight, op);
  }
}

/*
** Initialize a WhereMaskSet object
*/
#define initMaskSet(P)  (P)->n=0







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** does is make slot[] entries point to substructure within pExpr.
**
** In the previous sentence and in the diagram, "slot[]" refers to
** the WhereClause.a[] array.  The slot[] array grows as needed to contain
** all terms of the WHERE clause.
*/
static void whereSplit(WhereClause *pWC, Expr *pExpr, u8 op){
  Expr *pE2 = sqlite3ExprSkipCollate(pExpr);
  pWC->op = op;
  if( pE2==0 ) return;
  if( pE2->op!=op ){
    whereClauseInsert(pWC, pExpr, 0);
  }else{
    whereSplit(pWC, pE2->pLeft, op);
    whereSplit(pWC, pE2->pRight, op);
  }
}

/*
** Initialize a WhereMaskSet object
*/
#define initMaskSet(P)  (P)->n=0