Use the sqlite3ParserAddCleanup() mechanism to ensure that the AggInfo

structure associated with an aggregate query is deallocated, for a performance
increase and size reduction.

FossilOrigin-Name: 7a1399671fa10c64d5358cc4d364d24c643fe9dd8da923356462267ee7962f61

manifest

@@ -1,5 +1,5 @@
-C Enhance\sthe\s".once"\sand\s".output"\scommands\sin\sthe\sCLI\sso\sthat\sif\sthe\nfilename\sargument\sbegins\swith\s"|"\sthe\sname\sbecomes\sthe\sconcatenation\nof\sall\ssubsequent\sarguments.\s\sHence,\scommands\slike\s".once\s|\sopen\s-f"\sbecome\npossible\swithout\sthe\sneed\sfor\squotes.
-D 2021-02-17T13:19:22.550
+C Use\sthe\ssqlite3ParserAddCleanup()\smechanism\sto\sensure\sthat\sthe\sAggInfo\nstructure\sassociated\swith\san\saggregate\squery\sis\sdeallocated,\sfor\sa\sperformance\nincrease\sand\ssize\sreduction.
+D 2021-02-17T21:13:14.431
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@ -536,17 +536,17 @@ F src/pcache.h 4f87acd914cef5016fae3030343540d75f5b85a1877eed1a2a19b9f284248586
 F src/pcache1.c 6596e10baf3d8f84cc1585d226cf1ab26564a5f5caf85a15757a281ff977d51a
 F src/pragma.c 6daaaecc26a4b09481d21722525b079ce756751a43a79cc1d8f122d686806193
 F src/pragma.h 8dc78ab7e9ec6ce3ded8332810a2066f1ef6267e2e03cd7356ee00276125c6cf
-F src/prepare.c f288cbc35f79eb32e162de7e80a63ebe00d80e639dcfac071bee11570cbdb16f
+F src/prepare.c a25c7df3a71be19c31231d59d0694e950183837fc54b1828549c5a766538fcf7
 F src/printf.c 30e92b638fac71dcd85cdea1d12ecfae354c9adee2c71e8e1ae4727cde7c91ed
 F src/random.c 80f5d666f23feb3e6665a6ce04c7197212a88384
 F src/resolve.c 172d0f27c021b1d572e73b6f04f3e2695f2932233d3f5e675bd85b028fa2fb75
 F src/rowset.c ba9515a922af32abe1f7d39406b9d35730ed65efab9443dc5702693b60854c92
-F src/select.c d009aafcd9304b8406809fc808ce8c2cd55471552d242b98bd3006d0ad55cd12
+F src/select.c 8acabad7dd5f2843b834d59a268aa186c987e469c13a777b6c62be35f2f17fad
 F src/shell.c.in 844417f84df1f6c4fce1c815629a888cfdcf219e86513e9c332bbcc38832f477
 F src/sqlite.h.in 8855a19f37ade8dad189a9e48233a2ebe1b46faf469c7eb0906a654e252dcc57
 F src/sqlite3.rc 5121c9e10c3964d5755191c80dd1180c122fc3a8
 F src/sqlite3ext.h 61b38c073d5e1e96a3d45271b257aef27d0d13da2bea5347692ae579475cd95e
-F src/sqliteInt.h 4cb469678a0dbf814e4efbde4488a0161a5398e9a63141830d9f676b4e9fb0cc
+F src/sqliteInt.h 2b9857cce5da2ca42496cbe1f82c8565543e293c69a284659b9aebbd47652dfc
 F src/sqliteLimit.h d7323ffea5208c6af2734574bae933ca8ed2ab728083caa117c9738581a31657
 F src/status.c 4b8bc2a6905163a38b739854a35b826c737333fab5b1f8e03fa7eb9a4799c4c1
 F src/table.c 0f141b58a16de7e2fbe81c308379e7279f4c6b50eb08efeec5892794a0ba30d1
@@ -1900,7 +1900,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P 00bead3931135af80475c22f08cbb26c914518e8f2c7e73c2b8be1cee4ac4d5e
-R c958a1f70e224efabdacd339f843bfe0
+P c46a94a624c2cc6c49ac916a206a913081e1628c24805987cabc75c9057ea36b
+R 7e862b26b0bc3ecb89f295cd752077f2
 U drh
-Z 21b3dfef27853d212520b4c1b1451b1a
+Z 8efe4ae08dfd69f1aac139f8c3069d98

manifest.uuid

@@ -1 +1 @@
-c46a94a624c2cc6c49ac916a206a913081e1628c24805987cabc75c9057ea36b
+7a1399671fa10c64d5358cc4d364d24c643fe9dd8da923356462267ee7962f61

src/prepare.c

@@ -550,31 +550,16 @@ int sqlite3SchemaToIndex(sqlite3 *db, Schema *pSchema){
   return i;
 }
 
-/*
-** Deallocate a single AggInfo object
-*/
-static void agginfoFree(sqlite3 *db, AggInfo *p){
-  sqlite3DbFree(db, p->aCol);
-  sqlite3DbFree(db, p->aFunc);
-  sqlite3DbFree(db, p);
-}
-
 /*
 ** Free all memory allocations in the pParse object
 */
 void sqlite3ParserReset(Parse *pParse){
   sqlite3 *db = pParse->db;
-  AggInfo *pThis = pParse->pAggList;
-  while( pThis ){
-    AggInfo *pNext = pThis->pNext;
-    agginfoFree(db, pThis);
-    pThis = pNext;
-  }
   while( pParse->pCleanup ){
     ParseCleanup *pCleanup = pParse->pCleanup;
     pParse->pCleanup = pCleanup->pNext;
     pCleanup->xCleanup(db, pCleanup->pPtr);
-    sqlite3DbFree(db, pCleanup);
+    sqlite3DbFreeNN(db, pCleanup);
   }
   sqlite3DbFree(db, pParse->aLabel);
   if( pParse->pConstExpr ){

src/select.c

@@ -5793,6 +5793,15 @@ static struct SrcList_item *isSelfJoinView(
   return 0;
 }
 
+/*
+** Deallocate a single AggInfo object
+*/
+static void agginfoFree(sqlite3 *db, AggInfo *p){
+  sqlite3DbFree(db, p->aCol);
+  sqlite3DbFree(db, p->aFunc);
+  sqlite3DbFreeNN(db, p);
+}
+
 #ifdef SQLITE_COUNTOFVIEW_OPTIMIZATION
 /*
 ** Attempt to transform a query of the form
@@ -6537,11 +6546,13 @@ int sqlite3Select(
     ** SELECT statement.
     */
     pAggInfo = sqlite3DbMallocZero(db, sizeof(*pAggInfo) );
-    if( pAggInfo==0 ){
+    if( pAggInfo ){
+      sqlite3ParserAddCleanup(pParse,
+          (void(*)(sqlite3*,void*))agginfoFree, pAggInfo);
+    }
+    if( db->mallocFailed ){
       goto select_end;
     }
-    pAggInfo->pNext = pParse->pAggList;
-    pParse->pAggList = pAggInfo;
     pAggInfo->selId = p->selId;
     memset(&sNC, 0, sizeof(sNC));
     sNC.pParse = pParse;

src/sqliteInt.h

@@ -2591,7 +2591,6 @@ struct AggInfo {
   } *aFunc;
   int nFunc;              /* Number of entries in aFunc[] */
   u32 selId;              /* Select to which this AggInfo belongs */
-  AggInfo *pNext;         /* Next in list of them all */
 };
 
 /*
@@ -3427,7 +3426,6 @@ struct Parse {
   Parse *pToplevel;    /* Parse structure for main program (or NULL) */
   Table *pTriggerTab;  /* Table triggers are being coded for */
   Parse *pParentParse; /* Parent parser if this parser is nested */
-  AggInfo *pAggList;   /* List of all AggInfo objects */
   union {
     int addrCrTab;         /* Address of OP_CreateBtree on CREATE TABLE */
     Returning *pReturning; /* The RETURNING clause */