Factor out common operations into whereLoopAddAll(). Add stubs for

missing features.

FossilOrigin-Name: 0278e420614e02fb2d8474ed99b0904275882dfe

manifest

@@ -1,5 +1,5 @@
-C Merge\sin\sthe\slatest\strunk\schanges.
+C Factor\sout\scommon\soperations\sinto\swhereLoopAddAll().\s\sAdd\sstubs\sfor\nmissing\sfeatures.
-D 2013-05-10T02:11:40.008
+D 2013-05-10T03:30:49.076
 F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
 F Makefile.in ce81671efd6223d19d4c8c6b88ac2c4134427111
 F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
@@ -264,7 +264,7 @@ F src/vtab.c b05e5f1f4902461ba9f5fc49bb7eb7c3a0741a83
 F src/wal.c 436bfceb141b9423c45119e68e444358ee0ed35d
 F src/wal.h df01efe09c5cb8c8e391ff1715cca294f89668a4
 F src/walker.c 4fa43583d0a84b48f93b1e88f11adf2065be4e73
-F src/where.c 4816e3ec624c96b5169f0cc83dbb5cf459ce3fd1
+F src/where.c 31160bacc36e1fa5818caf091d5559d55eae7a5d
 F test/8_3_names.test ebbb5cd36741350040fd28b432ceadf495be25b2
 F test/aggerror.test a867e273ef9e3d7919f03ef4f0e8c0d2767944f2
 F test/aggnested.test 45c0201e28045ad38a530b5a144b73cd4aa2cfd6
@@ -1062,7 +1062,7 @@ F tool/vdbe-compress.tcl f12c884766bd14277f4fcedcae07078011717381
 F tool/warnings-clang.sh f6aa929dc20ef1f856af04a730772f59283631d4
 F tool/warnings.sh fbc018d67fd7395f440c28f33ef0f94420226381
 F tool/win/sqlite.vsix 97894c2790eda7b5bce3cc79cb2a8ec2fde9b3ac
-P 82d50e198025a2fdb8ee733edb8419d388ee5362 cf5c3642247fdd34d87f0368594cd7b8f081636a
+P 5ed31c8279a4f465b982df5dc20cefc286928b93
-R bed3d93321566d3c8fda15cb3370678a
+R 6a6b39040b040f90ce4281cc062a3caa
 U drh
-Z 9d7433ee1472cd0008b2ab99b16fa998
+Z ca90367b6425b581381608ce8a76b4fa

manifest.uuid

@@ -1 +1 @@
-5ed31c8279a4f465b982df5dc20cefc286928b93
+0278e420614e02fb2d8474ed99b0904275882dfe

src/where.c

@@ -5309,7 +5309,6 @@ static int whereLoopAddBtreeIndex(
 */
 static int whereLoopAddBtree(
   WhereLoopBuilder *pBuilder, /* WHERE clause information */
-  int iTab,                   /* The table to process */
   Bitmask mExtra              /* Extra prerequesites for using this table */
 ){
   Index *pProbe;              /* An index we are evaluating */
@@ -5317,14 +5316,11 @@ static int whereLoopAddBtree(
   tRowcnt aiRowEstPk[2];      /* The aiRowEst[] value for the sPk index */
   int aiColumnPk = -1;        /* The aColumn[] value for the sPk index */
   struct SrcList_item *pSrc;  /* The FROM clause btree term to add */
-  sqlite3 *db;                /* The database connection */
   WhereLoop *pNew;            /* Template WhereLoop object */
   int rc = SQLITE_OK;         /* Return code */
 
   pNew = pBuilder->pNew;
-  db = pBuilder->db;
+  pSrc = pBuilder->pTabList->a + pNew->iTab;
-  pSrc = pBuilder->pTabList->a + iTab;
-  pNew->maskSelf = getMask(pBuilder->pWC->pMaskSet, pSrc->iCursor);
 
   if( pSrc->pIndex ){
     /* An INDEXED BY clause specifies a particular index to use */
@@ -5353,23 +5349,21 @@ static int whereLoopAddBtree(
   }
 
   /* Insert a full table scan */
-  pNew->iTab = iTab;
   pNew->u.btree.nEq = 0;
   pNew->nTerm = 0;
   pNew->rSetup = (double)0;
-  pNew->prereq = 0;
+  pNew->prereq = mExtra;
   pNew->u.btree.pIndex = 0;
   pNew->wsFlags = 0;
   pNew->rRun = (double)pSrc->pTab->nRowEst;
   pNew->nOut = (double)pSrc->pTab->nRowEst;
   rc = whereLoopInsert(pBuilder->pWInfo, pNew);
 
+  /* TBD: Insert automatic index opportunities */
+
   /* Loop over all indices
   */
   for(; rc==SQLITE_OK && pProbe; pProbe=pProbe->pNext){
-    WhereTerm **paTerm;
-    pNew->prereq = mExtra;
-    pNew->iTab = iTab;
     pNew->u.btree.nEq = 0;
     pNew->nTerm = 0;
     if( pProbe->tnum<=0 ){
@@ -5386,10 +5380,6 @@ static int whereLoopAddBtree(
       }
       pNew->wsFlags = m==0 ? WHERE_IDX_ONLY : 0;
     }
-    paTerm = sqlite3DbRealloc(db, pNew->aTerm,
-                              (pProbe->nColumn+2)*sizeof(pNew->aTerm[0]));
-    if( paTerm==0 ){ rc = SQLITE_NOMEM; break; }
-    pNew->aTerm = paTerm;
     pNew->u.btree.pIndex = pProbe;
 
     rc = whereLoopAddBtreeIndex(pBuilder, pSrc, pProbe, 1);
@@ -5407,7 +5397,6 @@ static int whereLoopAddBtree(
 */
 static int whereLoopAddVirtual(
   WhereLoopBuilder *pBuilder,  /* WHERE clause information */
-  int iTab,                    /* The table to process */
   Bitmask mExtra               /* Extra prerequesites for using this table */
 ){
   Parse *pParse;               /* The parsing context */
@@ -5425,27 +5414,17 @@ static int whereLoopAddVirtual(
   int seenVar = 0;             /* True if a non-constant constraint is seen */
   int iPhase;                  /* 0: const w/o IN, 1: const, 2: no IN,  2: IN */
   WhereLoop *pNew;
-  WhereTerm **paTerm;
   int rc = SQLITE_OK;
 
   pParse = pBuilder->pParse;
   db = pParse->db;
   pWC = pBuilder->pWC;
-  pSrc = &pBuilder->pTabList->a[iTab];
-  pTab = pSrc->pTab;
   pNew = pBuilder->pNew;
-  pIdxInfo = allocateIndexInfo(pParse,pWC,pSrc,pBuilder->pOrderBy);
+  pSrc = &pBuilder->pTabList->a[pNew->iTab];
+  pTab = pSrc->pTab;
+  pIdxInfo = allocateIndexInfo(pParse, pWC, pSrc, pBuilder->pOrderBy);
   if( pIdxInfo==0 ) return SQLITE_NOMEM;
-  paTerm = sqlite3DbRealloc(db, pNew->aTerm,
-                            (pIdxInfo->nConstraint+1)*sizeof(pNew->aTerm[0]));
-  if( paTerm==0 ){
-    sqlite3DbFree(db, pIdxInfo);
-    return SQLITE_NOMEM;
-  }
-  pNew->aTerm = paTerm;
   pNew->prereq = 0;
-  pNew->iTab = iTab;
-  pNew->maskSelf = getMask(pBuilder->pWC->pMaskSet, pSrc->iCursor);
   pNew->rSetup = 0;
   pNew->wsFlags = WHERE_VIRTUALTABLE;
   pNew->nTerm = 0;
@@ -5571,22 +5550,36 @@ static int whereLoopAddAll(WhereLoopBuilder *pBuilder){
   sqlite3 *db = pBuilder->db;
   int nTabList = pBuilder->pWInfo->nLevel;
   int rc = SQLITE_OK;
+  WhereLoop *pNew;
 
   /* Loop over the tables in the join, from left to right */
-  pBuilder->pNew = sqlite3DbMallocZero(db, sizeof(WhereLoop));
+  pBuilder->pNew = pNew = sqlite3DbMallocZero(db, sizeof(WhereLoop));
-  if( pBuilder->pNew==0 ) return SQLITE_NOMEM;
+  if( pNew==0 ) return SQLITE_NOMEM;
+  pNew->aTerm = sqlite3DbMallocZero(db, (pWC->nTerm+1)*sizeof(pNew->aTerm[0]));
+  if( pNew->aTerm==0 ){
+    rc = SQLITE_NOMEM;
+    goto whereLoopAddAll_end;
+  }
   for(iTab=0, pItem=pTabList->a; iTab<nTabList; iTab++, pItem++){
-    if( IsVirtual(pItem->pTab) ){
+    pNew->iTab = iTab;
-      rc = whereLoopAddVirtual(pBuilder, iTab, mExtra);
+    pNew->maskSelf = getMask(pWC->pMaskSet, pItem->iCursor);
-    }else{
-      rc = whereLoopAddBtree(pBuilder, iTab, mExtra);
-    }
-    mPrior |= getMask(pWC->pMaskSet, pItem->iCursor);
     if( (pItem->jointype & (JT_LEFT|JT_CROSS))!=0 ){
       mExtra = mPrior;
     }
+    if( IsVirtual(pItem->pTab) ){
+      rc = whereLoopAddVirtual(pBuilder, mExtra);
+    }else{
+      rc = whereLoopAddBtree(pBuilder, mExtra);
+    }
+#if 0
+    if( rc==SQLITE_OK ){
+      rc = whereLoopAddOr(pBuilder, mExtra);
+    }
+#endif
+    mPrior |= pNew->maskSelf;
     if( rc || db->mallocFailed ) break;
   }
+whereLoopAddAll_end:
   whereLoopDelete(db, pBuilder->pNew);
   pBuilder->pNew = 0;
   return rc;