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Overview
| Comment: | Further corner-case fixes to the name resolution logic. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | name-resolution-fix |
| Files: | files | file ages | folders |
| SHA1: |
20730bad7082b559a65e8cfedb31b6af |
| User & Date: | drh 2013-01-03 17:34:28 |
Context
|
2013-01-03
| ||
| 18:07 | Improvements to column name resolution in queries with parenthesized FROM clauses. Also includes a fix for ticket [beba9cae6345a3]. check-in: 99127a66 user: drh tags: trunk | |
| 17:34 | Further corner-case fixes to the name resolution logic. Closed-Leaf check-in: 20730bad user: drh tags: name-resolution-fix | |
| 16:54 | Remove an incorrect assert() statement (ticket [beba9cae6345a]). Fix other minor problems in the name resolution logic. check-in: afe96a11 user: drh tags: name-resolution-fix | |
Changes
Changes to src/resolve.c.
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int hit = 0;
for(j=0; j<pEList->nExpr; j++){
if( sqlite3MatchSpanName(pEList->a[j].zSpan, zCol, zTab, zDb) ){
cnt++;
cntTab = 2;
pMatch = pItem;
pExpr->iColumn = j;
}
}
if( hit || zTab==0 ) continue;
}
if( zDb && pTab->pSchema!=pSchema ){
continue;
}
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> |
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int hit = 0;
for(j=0; j<pEList->nExpr; j++){
if( sqlite3MatchSpanName(pEList->a[j].zSpan, zCol, zTab, zDb) ){
cnt++;
cntTab = 2;
pMatch = pItem;
pExpr->iColumn = j;
hit = 1;
}
}
if( hit || zTab==0 ) continue;
}
if( zDb && pTab->pSchema!=pSchema ){
continue;
}
|
Changes to src/select.c.
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** operators that need to be expanded. Loop through each expression
** in the result set and expand them one by one.
*/
struct ExprList_item *a = pEList->a;
ExprList *pNew = 0;
int flags = pParse->db->flags;
int longNames = (flags & SQLITE_FullColNames)!=0
&& (flags & SQLITE_ShortColNames)==0
&& (p->selFlags & SF_NestedFrom)==0;
for(k=0; k<pEList->nExpr; k++){
pE = a[k].pExpr;
pRight = pE->pRight;
assert( pE->op!=TK_DOT || pRight!=0 );
if( pE->op!=TK_ALL && (pE->op!=TK_DOT || pRight->op!=TK_ALL) ){
/* This particular expression does not need to be expanded.
................................................................................
pRight = sqlite3Expr(db, TK_ID, zName);
zColname = zName;
zToFree = 0;
if( longNames || pTabList->nSrc>1 ){
Expr *pLeft;
pLeft = sqlite3Expr(db, TK_ID, zTabName);
pExpr = sqlite3PExpr(pParse, TK_DOT, pLeft, pRight, 0);
if( zSchemaName && iDb>0 ){
pLeft = sqlite3Expr(db, TK_ID, zSchemaName);
pExpr = sqlite3PExpr(pParse, TK_DOT, pLeft, pExpr, 0);
}
if( longNames ){
zColname = sqlite3MPrintf(db, "%s.%s", zTabName, zName);
zToFree = zColname;
}
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** operators that need to be expanded. Loop through each expression
** in the result set and expand them one by one.
*/
struct ExprList_item *a = pEList->a;
ExprList *pNew = 0;
int flags = pParse->db->flags;
int longNames = (flags & SQLITE_FullColNames)!=0
&& (flags & SQLITE_ShortColNames)==0;
/* When processing FROM-clause subqueries, it is always the case
** that full_column_names=OFF and short_column_names=ON. The
** sqlite3ResultSetOfSelect() routine makes it so. */
assert( (p->selFlags & SF_NestedFrom)==0
|| ((flags & SQLITE_FullColNames)==0 &&
(flags & SQLITE_ShortColNames)!=0) );
for(k=0; k<pEList->nExpr; k++){
pE = a[k].pExpr;
pRight = pE->pRight;
assert( pE->op!=TK_DOT || pRight!=0 );
if( pE->op!=TK_ALL && (pE->op!=TK_DOT || pRight->op!=TK_ALL) ){
/* This particular expression does not need to be expanded.
................................................................................
pRight = sqlite3Expr(db, TK_ID, zName);
zColname = zName;
zToFree = 0;
if( longNames || pTabList->nSrc>1 ){
Expr *pLeft;
pLeft = sqlite3Expr(db, TK_ID, zTabName);
pExpr = sqlite3PExpr(pParse, TK_DOT, pLeft, pRight, 0);
if( zSchemaName ){
pLeft = sqlite3Expr(db, TK_ID, zSchemaName);
pExpr = sqlite3PExpr(pParse, TK_DOT, pLeft, pExpr, 0);
}
if( longNames ){
zColname = sqlite3MPrintf(db, "%s.%s", zTabName, zName);
zToFree = zColname;
}
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