Give the expression pointer fields of AggInfo distinctive names in order to

simplify tracking of all their uses.

FossilOrigin-Name: a53bdd311c4154fd5e1131efbb9665362f79db5a35ce9f7b1547f74b8ee2d8ba

5 files changed, 34 insertions, 34 deletions

diff --git a/manifest b/manifest
index 5e72cbd1e..330b56465 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Improved\stree-view\sdebugging\soutput\sfor\saggregate\sfunctions.
-D 2020-06-09T11:59:15.991
+C Give\sthe\sexpression\spointer\sfields\sof\sAggInfo\sdistinctive\snames\sin\sorder\sto\nsimplify\stracking\sof\sall\stheir\suses.
+D 2020-06-09T13:38:12.505
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@ -485,7 +485,7 @@ F src/date.c b29b349d277e3d579dcc295b24c0a2caed83fd8f090a9f7cbe6070c0fd662384
 F src/dbpage.c 8a01e865bf8bc6d7b1844b4314443a6436c07c3efe1d488ed89e81719047833a
 F src/dbstat.c 793deaf88a0904f88285d93d6713c636d55ede0ffd9f08d10f4ea825531d367f
 F src/delete.c 88047c8e59878c920fce14582bc1dde4d81157d1ca5ffdf36c2907e6d41996c4
-F src/expr.c 217bee94b696a061fec28526c5d5ef3049536ace5c10a0a3ff7d15b0d3a9cd11
+F src/expr.c 5afb8dd59d5617e0eb25f91143ed042b6cd99c006352bdbd441cb9638d2602d8
 F src/fault.c 460f3e55994363812d9d60844b2a6de88826e007
 F src/fkey.c 4b575423b0a5d4898b1a7868ce985cf1a8ad91c741c9abbb108ff02536d20f41
 F src/func.c 2333eb4277f55a5efdc12ef754e7d7ec9105d257b2fd00301d23ce1e8fa67dc0
@@ -533,12 +533,12 @@ F src/printf.c 94b5419ad0a17269f76a9e968ca19cf9fa37617abed2e246fc48844e511b6bc6
 F src/random.c 80f5d666f23feb3e6665a6ce04c7197212a88384
 F src/resolve.c c2008519a0654f1e7490e9281ed0397d0f14bb840d81f0b96946248afcbdb25d
 F src/rowset.c ba9515a922af32abe1f7d39406b9d35730ed65efab9443dc5702693b60854c92
-F src/select.c 1301808307645b008ba7a33647c0ca19f97240c426addd2e0dad2a2867d8b2b5
+F src/select.c a1f5efdbbfae1f73746242b43daedc974a4ae702d62c305219da650ec10fb08f
 F src/shell.c.in c6e26593f2738eefded08a39204bf6b48db135cdfaa458c26ffe57055b4fe365
 F src/sqlite.h.in 74342b41e9d68ff9e56b192009046f8dd0aa2bd76ce1a588f330de614ba61de7
 F src/sqlite3.rc 5121c9e10c3964d5755191c80dd1180c122fc3a8
 F src/sqlite3ext.h 2d1af80082edffd71c6f96f70ad1ce6a4fb46615ad10291fc77fe0dea9ff0197
-F src/sqliteInt.h 73968c25461d9edf3b15d5d8f1468c4dd0677cbcb5a0be606e04e19e0d4a6863
+F src/sqliteInt.h 8fddd3ff00bb5983c45fbe891c9c4134b5d4799d8816a1e97cba38dc66aca4c2
 F src/sqliteLimit.h 95cb8479ca459496d9c1c6a9f76b38aee12203a56ce1092fe13e50ae2454c032
 F src/status.c 9ff2210207c6c3b4d9631a8241a7d45ab1b26a0e9c84cb07a9b5ce2de9a3b278
 F src/table.c 0f141b58a16de7e2fbe81c308379e7279f4c6b50eb08efeec5892794a0ba30d1
@@ -1867,7 +1867,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P d48af4d2cfff3d5f4ccc3db5d658e8b503255b577e6e62b5c2b4a4437875b895
-R 7f4e9a8ad02c966f79b46556c8deb165
+P b5711b4eead10ef4b0b61f2e2c54768d215a4105f6d47d2ea78991b6e53a6831
+R 45115571336eb976de1e3114a0d3911d
 U drh
-Z 7160527ec9944aa7c5f24e9bdb594d2d
+Z b9fb75855deff6080f9952a1c1c95794
diff --git a/manifest.uuid b/manifest.uuid
index 8ee67f7f2..2406f422d 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-b5711b4eead10ef4b0b61f2e2c54768d215a4105f6d47d2ea78991b6e53a6831
\ No newline at end of file
+a53bdd311c4154fd5e1131efbb9665362f79db5a35ce9f7b1547f74b8ee2d8ba
\ No newline at end of file
diff --git a/src/expr.c b/src/expr.c
index 6fbc8bb49..555b2a8d8 100644
--- a/src/expr.c
+++ b/src/expr.c
@@ -5738,20 +5738,20 @@ static int agginfoPersistExprCb(Walker *pWalker, Expr *pExpr){
     assert( pExpr->op==TK_AGG_COLUMN || pExpr->op==TK_AGG_FUNCTION );
     if( pExpr->op==TK_AGG_COLUMN ){
       assert( iAgg>=0 && iAgg<pAggInfo->nColumn );
-      if( pAggInfo->aCol[iAgg].pExpr==pExpr ){
+      if( pAggInfo->aCol[iAgg].pCExpr==pExpr ){
         pExpr = sqlite3ExprDup(db, pExpr, 0);
         if( pExpr ){
-          pAggInfo->aCol[iAgg].pExpr = pExpr;
+          pAggInfo->aCol[iAgg].pCExpr = pExpr;
           pParse->pConstExpr = 
              sqlite3ExprListAppend(pParse, pParse->pConstExpr, pExpr);
         }
       }
     }else{
       assert( iAgg>=0 && iAgg<pAggInfo->nFunc );
-      if( pAggInfo->aFunc[iAgg].pExpr==pExpr ){
+      if( pAggInfo->aFunc[iAgg].pFExpr==pExpr ){
         pExpr = sqlite3ExprDup(db, pExpr, 0);
         if( pExpr ){
-          pAggInfo->aFunc[iAgg].pExpr = pExpr;
+          pAggInfo->aFunc[iAgg].pFExpr = pExpr;
           pParse->pConstExpr = 
              sqlite3ExprListAppend(pParse, pParse->pConstExpr, pExpr);
         }
@@ -5853,7 +5853,7 @@ static int analyzeAggregate(Walker *pWalker, Expr *pExpr){
               pCol->iColumn = pExpr->iColumn;
               pCol->iMem = ++pParse->nMem;
               pCol->iSorterColumn = -1;
-              pCol->pExpr = pExpr;
+              pCol->pCExpr = pExpr;
               if( pAggInfo->pGroupBy ){
                 int j, n;
                 ExprList *pGB = pAggInfo->pGroupBy;
@@ -5896,7 +5896,7 @@ static int analyzeAggregate(Walker *pWalker, Expr *pExpr){
         */
         struct AggInfo_func *pItem = pAggInfo->aFunc;
         for(i=0; i<pAggInfo->nFunc; i++, pItem++){
-          if( sqlite3ExprCompare(0, pItem->pExpr, pExpr, -1)==0 ){
+          if( sqlite3ExprCompare(0, pItem->pFExpr, pExpr, -1)==0 ){
             break;
           }
         }
@@ -5908,7 +5908,7 @@ static int analyzeAggregate(Walker *pWalker, Expr *pExpr){
           if( i>=0 ){
             assert( !ExprHasProperty(pExpr, EP_xIsSelect) );
             pItem = &pAggInfo->aFunc[i];
-            pItem->pExpr = pExpr;
+            pItem->pFExpr = pExpr;
             pItem->iMem = ++pParse->nMem;
             assert( !ExprHasProperty(pExpr, EP_IntValue) );
             pItem->pFunc = sqlite3FindFunction(pParse->db,
diff --git a/src/select.c b/src/select.c
index 96e44225f..cd242bb1f 100644
--- a/src/select.c
+++ b/src/select.c
@@ -5389,7 +5389,7 @@ static void resetAccumulator(Parse *pParse, AggInfo *pAggInfo){
   sqlite3VdbeAddOp3(v, OP_Null, 0, pAggInfo->mnReg, pAggInfo->mxReg);
   for(pFunc=pAggInfo->aFunc, i=0; i<pAggInfo->nFunc; i++, pFunc++){
     if( pFunc->iDistinct>=0 ){
-      Expr *pE = pFunc->pExpr;
+      Expr *pE = pFunc->pFExpr;
       assert( !ExprHasProperty(pE, EP_xIsSelect) );
       if( pE->x.pList==0 || pE->x.pList->nExpr!=1 ){
         sqlite3ErrorMsg(pParse, "DISTINCT aggregates must have exactly one "
@@ -5413,8 +5413,8 @@ static void finalizeAggFunctions(Parse *pParse, AggInfo *pAggInfo){
   int i;
   struct AggInfo_func *pF;
   for(i=0, pF=pAggInfo->aFunc; i<pAggInfo->nFunc; i++, pF++){
-    ExprList *pList = pF->pExpr->x.pList;
-    assert( !ExprHasProperty(pF->pExpr, EP_xIsSelect) );
+    ExprList *pList = pF->pFExpr->x.pList;
+    assert( !ExprHasProperty(pF->pFExpr, EP_xIsSelect) );
     sqlite3VdbeAddOp2(v, OP_AggFinal, pF->iMem, pList ? pList->nExpr : 0);
     sqlite3VdbeAppendP4(v, pF->pFunc, P4_FUNCDEF);
   }
@@ -5443,11 +5443,11 @@ static void updateAccumulator(Parse *pParse, int regAcc, AggInfo *pAggInfo){
     int nArg;
     int addrNext = 0;
     int regAgg;
-    ExprList *pList = pF->pExpr->x.pList;
-    assert( !ExprHasProperty(pF->pExpr, EP_xIsSelect) );
-    assert( !IsWindowFunc(pF->pExpr) );
-    if( ExprHasProperty(pF->pExpr, EP_WinFunc) ){
-      Expr *pFilter = pF->pExpr->y.pWin->pFilter;
+    ExprList *pList = pF->pFExpr->x.pList;
+    assert( !ExprHasProperty(pF->pFExpr, EP_xIsSelect) );
+    assert( !IsWindowFunc(pF->pFExpr) );
+    if( ExprHasProperty(pF->pFExpr, EP_WinFunc) ){
+      Expr *pFilter = pF->pFExpr->y.pWin->pFilter;
       if( pAggInfo->nAccumulator 
        && (pF->pFunc->funcFlags & SQLITE_FUNC_NEEDCOLL) 
       ){
@@ -5509,7 +5509,7 @@ static void updateAccumulator(Parse *pParse, int regAcc, AggInfo *pAggInfo){
     addrHitTest = sqlite3VdbeAddOp1(v, OP_If, regHit); VdbeCoverage(v);
   }
   for(i=0, pC=pAggInfo->aCol; i<pAggInfo->nAccumulator; i++, pC++){
-    sqlite3ExprCode(pParse, pC->pExpr, pC->iMem);
+    sqlite3ExprCode(pParse, pC->pCExpr, pC->iMem);
   }
 
   pAggInfo->directMode = 0;
@@ -6385,12 +6385,12 @@ int sqlite3Select(
     }
     pAggInfo->nAccumulator = pAggInfo->nColumn;
     if( p->pGroupBy==0 && p->pHaving==0 && pAggInfo->nFunc==1 ){
-      minMaxFlag = minMaxQuery(db, pAggInfo->aFunc[0].pExpr, &pMinMaxOrderBy);
+      minMaxFlag = minMaxQuery(db, pAggInfo->aFunc[0].pFExpr, &pMinMaxOrderBy);
     }else{
       minMaxFlag = WHERE_ORDERBY_NORMAL;
     }
     for(i=0; i<pAggInfo->nFunc; i++){
-      Expr *pExpr = pAggInfo->aFunc[i].pExpr;
+      Expr *pExpr = pAggInfo->aFunc[i].pFExpr;
       assert( !ExprHasProperty(pExpr, EP_xIsSelect) );
       sNC.ncFlags |= NC_InAggFunc;
       sqlite3ExprAnalyzeAggList(&sNC, pExpr->x.pList);
@@ -6412,12 +6412,12 @@ int sqlite3Select(
       for(ii=0; ii<pAggInfo->nColumn; ii++){
         sqlite3DebugPrintf("agg-column[%d] iMem=%d\n",
             ii, pAggInfo->aCol[ii].iMem);
-        sqlite3TreeViewExpr(0, pAggInfo->aCol[ii].pExpr, 0);
+        sqlite3TreeViewExpr(0, pAggInfo->aCol[ii].pCExpr, 0);
       }
       for(ii=0; ii<pAggInfo->nFunc; ii++){
         sqlite3DebugPrintf("agg-func[%d]: iMem=%d\n",
             ii, pAggInfo->aFunc[ii].iMem);
-        sqlite3TreeViewExpr(0, pAggInfo->aFunc[ii].pExpr, 0);
+        sqlite3TreeViewExpr(0, pAggInfo->aFunc[ii].pFExpr, 0);
       }
     }
 #endif
@@ -6722,7 +6722,7 @@ int sqlite3Select(
         ** function visits zero rows.  */
         if( pAggInfo->nAccumulator ){
           for(i=0; i<pAggInfo->nFunc; i++){
-            if( ExprHasProperty(pAggInfo->aFunc[i].pExpr, EP_WinFunc) ){
+            if( ExprHasProperty(pAggInfo->aFunc[i].pFExpr, EP_WinFunc) ){
               continue;
             }
             if( pAggInfo->aFunc[i].pFunc->funcFlags&SQLITE_FUNC_NEEDCOLL ){
@@ -6806,14 +6806,14 @@ select_end:
 #ifdef SQLITE_DEBUG
   if( pAggInfo ){
     for(i=0; i<pAggInfo->nColumn; i++){
-      Expr *pExpr = pAggInfo->aCol[i].pExpr;
+      Expr *pExpr = pAggInfo->aCol[i].pCExpr;
       assert( pExpr!=0 || db->mallocFailed );
       if( pExpr==0 ) continue;
       assert( pExpr->pAggInfo==pAggInfo );
       assert( pExpr->iAgg==i );
     }
     for(i=0; i<pAggInfo->nFunc; i++){
-      Expr *pExpr = pAggInfo->aFunc[i].pExpr;
+      Expr *pExpr = pAggInfo->aFunc[i].pFExpr;
       assert( pExpr!=0 || db->mallocFailed );
       if( pExpr==0 ) continue;
       assert( pExpr->pAggInfo==pAggInfo );
diff --git a/src/sqliteInt.h b/src/sqliteInt.h
index 0cd33baa0..723185642 100644
--- a/src/sqliteInt.h
+++ b/src/sqliteInt.h
@@ -2506,7 +2506,7 @@ struct AggInfo {
   ExprList *pGroupBy;     /* The group by clause */
   struct AggInfo_col {    /* For each column used in source tables */
     Table *pTab;             /* Source table */
-    Expr *pExpr;             /* The original expression */
+    Expr *pCExpr;            /* The original expression */
     int iTable;              /* Cursor number of the source table */
     int iMem;                /* Memory location that acts as accumulator */
     i16 iColumn;             /* Column number within the source table */
@@ -2517,7 +2517,7 @@ struct AggInfo {
                           ** Additional columns are used only as parameters to
                           ** aggregate functions */
   struct AggInfo_func {   /* For each aggregate function */
-    Expr *pExpr;             /* Expression encoding the function */
+    Expr *pFExpr;            /* Expression encoding the function */
     FuncDef *pFunc;          /* The aggregate function implementation */
     int iMem;                /* Memory location that acts as accumulator */
     int iDistinct;           /* Ephemeral table used to enforce DISTINCT */