Many hyperlinks are disabled.
Use anonymous login
to enable hyperlinks.
Overview
| Comment: | Change the name of SrcList.a[].zIndex to the more descriptive SrcList.a[0].zIndexedBy. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: | 6a9cf063379118dbb95c6cdc6d60af50e9867177 |
| User & Date: | drh 2015-06-04 12:08:53 |
Context
|
2015-06-05
| ||
| 20:27 | Provide one final Select tree dump prior to WHERE clause analysis when ".selecttrace 0x400" tracing bit is set with SELECTTRACE_ENABLED. Analysis and debug changes only - normal builds are unaffected. check-in: 283bf0b6 user: drh tags: trunk | |
| 15:59 | Add a new opcode to the VDBE that gives the b-tree a hint about the set of columns in a table or index that are actually used by the query. Closed-Leaf check-in: f167bba4 user: drh tags: column-usage-hint | |
|
2015-06-04
| ||
| 12:08 | Change the name of SrcList.a[].zIndex to the more descriptive SrcList.a[0].zIndexedBy. check-in: 6a9cf063 user: drh tags: trunk | |
|
2015-06-02
| ||
| 19:36 | Always check for cell overflow before returning a slot from the pageFindSlot routine in btree.c. check-in: 9f035c45 user: drh tags: trunk | |
Changes
Changes to src/build.c.
3697
3698
3699
3700
3701
3702
3703
3704
3705
3706
3707
3708
3709
3710
3711
....
3770
3771
3772
3773
3774
3775
3776
3777
3778
3779
3780
3781
3782
3783
3784
3785
3786
3787
3788
3789
3790
|
int i;
struct SrcList_item *pItem;
if( pList==0 ) return;
for(pItem=pList->a, i=0; i<pList->nSrc; i++, pItem++){
sqlite3DbFree(db, pItem->zDatabase);
sqlite3DbFree(db, pItem->zName);
sqlite3DbFree(db, pItem->zAlias);
sqlite3DbFree(db, pItem->zIndex);
sqlite3DeleteTable(db, pItem->pTab);
sqlite3SelectDelete(db, pItem->pSelect);
sqlite3ExprDelete(db, pItem->pOn);
sqlite3IdListDelete(db, pItem->pUsing);
}
sqlite3DbFree(db, pList);
}
................................................................................
** Add an INDEXED BY or NOT INDEXED clause to the most recently added
** element of the source-list passed as the second argument.
*/
void sqlite3SrcListIndexedBy(Parse *pParse, SrcList *p, Token *pIndexedBy){
assert( pIndexedBy!=0 );
if( p && ALWAYS(p->nSrc>0) ){
struct SrcList_item *pItem = &p->a[p->nSrc-1];
assert( pItem->notIndexed==0 && pItem->zIndex==0 );
if( pIndexedBy->n==1 && !pIndexedBy->z ){
/* A "NOT INDEXED" clause was supplied. See parse.y
** construct "indexed_opt" for details. */
pItem->notIndexed = 1;
}else{
pItem->zIndex = sqlite3NameFromToken(pParse->db, pIndexedBy);
}
}
}
/*
** When building up a FROM clause in the parser, the join operator
** is initially attached to the left operand. But the code generator
|
|
|
|
|
3697
3698
3699
3700
3701
3702
3703
3704
3705
3706
3707
3708
3709
3710
3711
....
3770
3771
3772
3773
3774
3775
3776
3777
3778
3779
3780
3781
3782
3783
3784
3785
3786
3787
3788
3789
3790
|
int i;
struct SrcList_item *pItem;
if( pList==0 ) return;
for(pItem=pList->a, i=0; i<pList->nSrc; i++, pItem++){
sqlite3DbFree(db, pItem->zDatabase);
sqlite3DbFree(db, pItem->zName);
sqlite3DbFree(db, pItem->zAlias);
sqlite3DbFree(db, pItem->zIndexedBy);
sqlite3DeleteTable(db, pItem->pTab);
sqlite3SelectDelete(db, pItem->pSelect);
sqlite3ExprDelete(db, pItem->pOn);
sqlite3IdListDelete(db, pItem->pUsing);
}
sqlite3DbFree(db, pList);
}
................................................................................
** Add an INDEXED BY or NOT INDEXED clause to the most recently added
** element of the source-list passed as the second argument.
*/
void sqlite3SrcListIndexedBy(Parse *pParse, SrcList *p, Token *pIndexedBy){
assert( pIndexedBy!=0 );
if( p && ALWAYS(p->nSrc>0) ){
struct SrcList_item *pItem = &p->a[p->nSrc-1];
assert( pItem->notIndexed==0 && pItem->zIndexedBy==0 );
if( pIndexedBy->n==1 && !pIndexedBy->z ){
/* A "NOT INDEXED" clause was supplied. See parse.y
** construct "indexed_opt" for details. */
pItem->notIndexed = 1;
}else{
pItem->zIndexedBy = sqlite3NameFromToken(pParse->db, pIndexedBy);
}
}
}
/*
** When building up a FROM clause in the parser, the join operator
** is initially attached to the left operand. But the code generator
|
Changes to src/expr.c.
1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 |
pNewItem->jointype = pOldItem->jointype;
pNewItem->iCursor = pOldItem->iCursor;
pNewItem->addrFillSub = pOldItem->addrFillSub;
pNewItem->regReturn = pOldItem->regReturn;
pNewItem->isCorrelated = pOldItem->isCorrelated;
pNewItem->viaCoroutine = pOldItem->viaCoroutine;
pNewItem->isRecursive = pOldItem->isRecursive;
pNewItem->zIndex = sqlite3DbStrDup(db, pOldItem->zIndex);
pNewItem->notIndexed = pOldItem->notIndexed;
pNewItem->pIndex = pOldItem->pIndex;
pTab = pNewItem->pTab = pOldItem->pTab;
if( pTab ){
pTab->nRef++;
}
pNewItem->pSelect = sqlite3SelectDup(db, pOldItem->pSelect, flags);
|
| |
1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 |
pNewItem->jointype = pOldItem->jointype;
pNewItem->iCursor = pOldItem->iCursor;
pNewItem->addrFillSub = pOldItem->addrFillSub;
pNewItem->regReturn = pOldItem->regReturn;
pNewItem->isCorrelated = pOldItem->isCorrelated;
pNewItem->viaCoroutine = pOldItem->viaCoroutine;
pNewItem->isRecursive = pOldItem->isRecursive;
pNewItem->zIndexedBy = sqlite3DbStrDup(db, pOldItem->zIndexedBy);
pNewItem->notIndexed = pOldItem->notIndexed;
pNewItem->pIndex = pOldItem->pIndex;
pTab = pNewItem->pTab = pOldItem->pTab;
if( pTab ){
pTab->nRef++;
}
pNewItem->pSelect = sqlite3SelectDup(db, pOldItem->pSelect, flags);
|
Changes to src/select.c.
3864 3865 3866 3867 3868 3869 3870 3871 3872 3873 3874 3875 3876 3877 3878 3879 3880 3881 3882 3883 3884 3885 3886 3887 |
** If the source-list item passed as an argument was augmented with an
** INDEXED BY clause, then try to locate the specified index. If there
** was such a clause and the named index cannot be found, return
** SQLITE_ERROR and leave an error in pParse. Otherwise, populate
** pFrom->pIndex and return SQLITE_OK.
*/
int sqlite3IndexedByLookup(Parse *pParse, struct SrcList_item *pFrom){
if( pFrom->pTab && pFrom->zIndex ){
Table *pTab = pFrom->pTab;
char *zIndex = pFrom->zIndex;
Index *pIdx;
for(pIdx=pTab->pIndex;
pIdx && sqlite3StrICmp(pIdx->zName, zIndex);
pIdx=pIdx->pNext
);
if( !pIdx ){
sqlite3ErrorMsg(pParse, "no such index: %s", zIndex, 0);
pParse->checkSchema = 1;
return SQLITE_ERROR;
}
pFrom->pIndex = pIdx;
}
return SQLITE_OK;
}
|
| | | | |
3864 3865 3866 3867 3868 3869 3870 3871 3872 3873 3874 3875 3876 3877 3878 3879 3880 3881 3882 3883 3884 3885 3886 3887 |
** If the source-list item passed as an argument was augmented with an
** INDEXED BY clause, then try to locate the specified index. If there
** was such a clause and the named index cannot be found, return
** SQLITE_ERROR and leave an error in pParse. Otherwise, populate
** pFrom->pIndex and return SQLITE_OK.
*/
int sqlite3IndexedByLookup(Parse *pParse, struct SrcList_item *pFrom){
if( pFrom->pTab && pFrom->zIndexedBy ){
Table *pTab = pFrom->pTab;
char *zIndexedBy = pFrom->zIndexedBy;
Index *pIdx;
for(pIdx=pTab->pIndex;
pIdx && sqlite3StrICmp(pIdx->zName, zIndexedBy);
pIdx=pIdx->pNext
);
if( !pIdx ){
sqlite3ErrorMsg(pParse, "no such index: %s", zIndexedBy, 0);
pParse->checkSchema = 1;
return SQLITE_ERROR;
}
pFrom->pIndex = pIdx;
}
return SQLITE_OK;
}
|
Changes to src/sqliteInt.h.
2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 |
#ifndef SQLITE_OMIT_EXPLAIN
u8 iSelectId; /* If pSelect!=0, the id of the sub-select in EQP */
#endif
int iCursor; /* The VDBE cursor number used to access this table */
Expr *pOn; /* The ON clause of a join */
IdList *pUsing; /* The USING clause of a join */
Bitmask colUsed; /* Bit N (1<<N) set if column N of pTab is used */
char *zIndex; /* Identifier from "INDEXED BY <zIndex>" clause */
Index *pIndex; /* Index structure corresponding to zIndex, if any */
} a[1]; /* One entry for each identifier on the list */
};
/*
** Permitted values of the SrcList.a.jointype field
*/
|
| |
2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 |
#ifndef SQLITE_OMIT_EXPLAIN
u8 iSelectId; /* If pSelect!=0, the id of the sub-select in EQP */
#endif
int iCursor; /* The VDBE cursor number used to access this table */
Expr *pOn; /* The ON clause of a join */
IdList *pUsing; /* The USING clause of a join */
Bitmask colUsed; /* Bit N (1<<N) set if column N of pTab is used */
char *zIndexedBy; /* Identifier from "INDEXED BY <zIndex>" clause */
Index *pIndex; /* Index structure corresponding to zIndex, if any */
} a[1]; /* One entry for each identifier on the list */
};
/*
** Permitted values of the SrcList.a.jointype field
*/
|
Changes to src/where.c.
6392 6393 6394 6395 6396 6397 6398 6399 6400 6401 6402 6403 6404 6405 6406 |
pWInfo = pBuilder->pWInfo;
if( pWInfo->wctrlFlags & WHERE_FORCE_TABLE ) return 0;
assert( pWInfo->pTabList->nSrc>=1 );
pItem = pWInfo->pTabList->a;
pTab = pItem->pTab;
if( IsVirtual(pTab) ) return 0;
if( pItem->zIndex ) return 0;
iCur = pItem->iCursor;
pWC = &pWInfo->sWC;
pLoop = pBuilder->pNew;
pLoop->wsFlags = 0;
pLoop->nSkip = 0;
pTerm = findTerm(pWC, iCur, -1, 0, WO_EQ|WO_IS, 0);
if( pTerm ){
|
| |
6392 6393 6394 6395 6396 6397 6398 6399 6400 6401 6402 6403 6404 6405 6406 |
pWInfo = pBuilder->pWInfo;
if( pWInfo->wctrlFlags & WHERE_FORCE_TABLE ) return 0;
assert( pWInfo->pTabList->nSrc>=1 );
pItem = pWInfo->pTabList->a;
pTab = pItem->pTab;
if( IsVirtual(pTab) ) return 0;
if( pItem->zIndexedBy ) return 0;
iCur = pItem->iCursor;
pWC = &pWInfo->sWC;
pLoop = pBuilder->pNew;
pLoop->wsFlags = 0;
pLoop->nSkip = 0;
pTerm = findTerm(pWC, iCur, -1, 0, WO_EQ|WO_IS, 0);
if( pTerm ){
|