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Overview
| Comment: | Very slight smaller and faster sqlite3SelectNew() |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: |
4143650c4ce32289d2301cdfc69bb108 |
| User & Date: | drh 2017-04-11 16:44:39 |
Context
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2017-04-11
| ||
| 18:06 | Smaller and faster implementation of exprMightBeIndexed(). check-in: 76cd611d user: drh tags: trunk | |
| 16:44 | Very slight smaller and faster sqlite3SelectNew() check-in: 4143650c user: drh tags: trunk | |
| 12:20 | Add an ALWAYS() around an unreachable condition in sqlite3VdbeMemGrow(). check-in: 0f3eb61f user: drh tags: trunk | |
Changes
Changes to src/select.c.
108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 |
ExprList *pOrderBy, /* the ORDER BY clause */
u32 selFlags, /* Flag parameters, such as SF_Distinct */
Expr *pLimit, /* LIMIT value. NULL means not used */
Expr *pOffset /* OFFSET value. NULL means no offset */
){
Select *pNew;
Select standin;
sqlite3 *db = pParse->db;
pNew = sqlite3DbMallocRawNN(db, sizeof(*pNew) );
if( pNew==0 ){
assert( db->mallocFailed );
pNew = &standin;
}
if( pEList==0 ){
pEList = sqlite3ExprListAppend(pParse, 0, sqlite3Expr(db,TK_ASTERISK,0));
}
pNew->pEList = pEList;
pNew->op = TK_SELECT;
pNew->selFlags = selFlags;
pNew->iLimit = 0;
pNew->iOffset = 0;
#if SELECTTRACE_ENABLED
pNew->zSelName[0] = 0;
#endif
pNew->addrOpenEphm[0] = -1;
pNew->addrOpenEphm[1] = -1;
pNew->nSelectRow = 0;
if( pSrc==0 ) pSrc = sqlite3DbMallocZero(db, sizeof(*pSrc));
pNew->pSrc = pSrc;
pNew->pWhere = pWhere;
pNew->pGroupBy = pGroupBy;
pNew->pHaving = pHaving;
pNew->pOrderBy = pOrderBy;
pNew->pPrior = 0;
pNew->pNext = 0;
pNew->pLimit = pLimit;
pNew->pOffset = pOffset;
pNew->pWith = 0;
assert( pOffset==0 || pLimit!=0 || pParse->nErr>0 || db->mallocFailed!=0 );
if( db->mallocFailed ) {
clearSelect(db, pNew, pNew!=&standin);
pNew = 0;
}else{
assert( pNew->pSrc!=0 || pParse->nErr>0 );
}
assert( pNew!=&standin );
return pNew;
}
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108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 |
ExprList *pOrderBy, /* the ORDER BY clause */
u32 selFlags, /* Flag parameters, such as SF_Distinct */
Expr *pLimit, /* LIMIT value. NULL means not used */
Expr *pOffset /* OFFSET value. NULL means no offset */
){
Select *pNew;
Select standin;
pNew = sqlite3DbMallocRawNN(pParse->db, sizeof(*pNew) );
if( pNew==0 ){
assert( pParse->db->mallocFailed );
pNew = &standin;
}
if( pEList==0 ){
pEList = sqlite3ExprListAppend(pParse, 0, sqlite3Expr(pParse->db,TK_ASTERISK,0));
}
pNew->pEList = pEList;
pNew->op = TK_SELECT;
pNew->selFlags = selFlags;
pNew->iLimit = 0;
pNew->iOffset = 0;
#if SELECTTRACE_ENABLED
pNew->zSelName[0] = 0;
#endif
pNew->addrOpenEphm[0] = -1;
pNew->addrOpenEphm[1] = -1;
pNew->nSelectRow = 0;
if( pSrc==0 ) pSrc = sqlite3DbMallocZero(pParse->db, sizeof(*pSrc));
pNew->pSrc = pSrc;
pNew->pWhere = pWhere;
pNew->pGroupBy = pGroupBy;
pNew->pHaving = pHaving;
pNew->pOrderBy = pOrderBy;
pNew->pPrior = 0;
pNew->pNext = 0;
pNew->pLimit = pLimit;
pNew->pOffset = pOffset;
pNew->pWith = 0;
assert( pOffset==0 || pLimit!=0 || pParse->nErr>0 || pParse->db->mallocFailed!=0 );
if( pParse->db->mallocFailed ) {
clearSelect(pParse->db, pNew, pNew!=&standin);
pNew = 0;
}else{
assert( pNew->pSrc!=0 || pParse->nErr>0 );
}
assert( pNew!=&standin );
return pNew;
}
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