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Overview
| Comment: | More aggressive use of EP_Leaf on expression nodes, to help prune searches. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: |
c1a1d68c8219c8072e60af5c46a30849 |
| User & Date: | drh 2017-07-07 12:43:57 |
Context
|
2017-07-07
| ||
| 12:58 | More efficient and compact implementation of walkExpr(). check-in: 115d4b83 user: drh tags: trunk | |
| 12:43 | More aggressive use of EP_Leaf on expression nodes, to help prune searches. check-in: c1a1d68c user: drh tags: trunk | |
| 11:49 | Very slightly smaller and faster sqlite3WalkSelect(). check-in: 9bc65635 user: drh tags: trunk | |
Changes
Changes to src/expr.c.
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pNew = sqlite3DbMallocRawNN(db, sizeof(Expr)+nExtra);
if( pNew ){
memset(pNew, 0, sizeof(Expr));
pNew->op = (u8)op;
pNew->iAgg = -1;
if( pToken ){
if( nExtra==0 ){
pNew->flags |= EP_IntValue;
pNew->u.iValue = iValue;
}else{
pNew->u.zToken = (char*)&pNew[1];
assert( pToken->z!=0 || pToken->n==0 );
if( pToken->n ) memcpy(pNew->u.zToken, pToken->z, pToken->n);
pNew->u.zToken[pToken->n] = 0;
if( dequote && sqlite3Isquote(pNew->u.zToken[0]) ){
|
| |
740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 |
pNew = sqlite3DbMallocRawNN(db, sizeof(Expr)+nExtra);
if( pNew ){
memset(pNew, 0, sizeof(Expr));
pNew->op = (u8)op;
pNew->iAgg = -1;
if( pToken ){
if( nExtra==0 ){
pNew->flags |= EP_IntValue|EP_Leaf;
pNew->u.iValue = iValue;
}else{
pNew->u.zToken = (char*)&pNew[1];
assert( pToken->z!=0 || pToken->n==0 );
if( pToken->n ) memcpy(pNew->u.zToken, pToken->z, pToken->n);
pNew->u.zToken[pToken->n] = 0;
if( dequote && sqlite3Isquote(pNew->u.zToken[0]) ){
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Changes to src/resolve.c.
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/* Clean up and return
*/
sqlite3ExprDelete(db, pExpr->pLeft);
pExpr->pLeft = 0;
sqlite3ExprDelete(db, pExpr->pRight);
pExpr->pRight = 0;
pExpr->op = (isTrigger ? TK_TRIGGER : TK_COLUMN);
lookupname_end:
if( cnt==1 ){
assert( pNC!=0 );
if( !ExprHasProperty(pExpr, EP_Alias) ){
sqlite3AuthRead(pParse, pExpr, pSchema, pNC->pSrcList);
}
/* Increment the nRef value on all name contexts from TopNC up to
|
> |
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/* Clean up and return
*/
sqlite3ExprDelete(db, pExpr->pLeft);
pExpr->pLeft = 0;
sqlite3ExprDelete(db, pExpr->pRight);
pExpr->pRight = 0;
pExpr->op = (isTrigger ? TK_TRIGGER : TK_COLUMN);
ExprSetProperty(pExpr, EP_Leaf);
lookupname_end:
if( cnt==1 ){
assert( pNC!=0 );
if( !ExprHasProperty(pExpr, EP_Alias) ){
sqlite3AuthRead(pParse, pExpr, pSchema, pNC->pSrcList);
}
/* Increment the nRef value on all name contexts from TopNC up to
|