New SELECTTRACE macros more clearly deliniate when the query planner is

invoked in the middle of PRAGMA vdbe_addoptrace output.

FossilOrigin-Name: 7c03ce49b74f72b63dd75c3a02625e671bfd771f71b24e808994322b00d97677

manifest

@@ -1,5 +1,5 @@
-C Fix\san\sissue\swith\sthe\sLIKE\soperator\swhen\sit\sincludes\sthe\s"ESCAPE\s'_'"\sclause.\nTicket\s[c0aeea67d58ae0fd].
-D 2021-02-15T17:02:01.949
+C New\sSELECTTRACE\smacros\smore\sclearly\sdeliniate\swhen\sthe\squery\splanner\sis\ninvoked\sin\sthe\smiddle\sof\sPRAGMA\svdbe_addoptrace\soutput.
+D 2021-02-16T20:01:08.164
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@ -541,7 +541,7 @@ F src/printf.c 30e92b638fac71dcd85cdea1d12ecfae354c9adee2c71e8e1ae4727cde7c91ed
 F src/random.c 80f5d666f23feb3e6665a6ce04c7197212a88384
 F src/resolve.c 89e4faf6171e179edf279905e8e45c4f9dd108777dc60716396729fbd7cb045e
 F src/rowset.c ba9515a922af32abe1f7d39406b9d35730ed65efab9443dc5702693b60854c92
-F src/select.c 9b4c84fd2703ee3c8b5d4b189387482a84c26acf2c38ca4835db5b48c68a09d4
+F src/select.c d009aafcd9304b8406809fc808ce8c2cd55471552d242b98bd3006d0ad55cd12
 F src/shell.c.in 9ebc74e4f05cfbd0f4a36060fdaeff1da4e9af4458358722bc08c5a1ab9a0879
 F src/sqlite.h.in 8855a19f37ade8dad189a9e48233a2ebe1b46faf469c7eb0906a654e252dcc57
 F src/sqlite3.rc 5121c9e10c3964d5755191c80dd1180c122fc3a8
@@ -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 7cc65ae57183b3c16f1102fca5603a36acda432e5d45e22a2996e5ebe069fc6a
-R 3ed1929e1ca13bbf9ff7ef7c6dc85f4d
+P 27d4117980d125975b5e70eeea58a6ab07bcf066e71b5fcb81b822e05afdbab0
+R d43052c777aaa14629da9c7e3bc44da1
 U drh
-Z b9fb1ccb5459387ee6a14bca5dee2b45
+Z eeb77f51dc50205cf2215ff7ac94a3a0

manifest.uuid

@@ -1 +1 @@
-27d4117980d125975b5e70eeea58a6ab07bcf066e71b5fcb81b822e05afdbab0
+7c03ce49b74f72b63dd75c3a02625e671bfd771f71b24e808994322b00d97677

src/select.c

@@ -6427,6 +6427,7 @@ int sqlite3Select(
         sSort.pOrderBy = 0;
       }
     }
+    SELECTTRACE(1,pParse,p,("WhereBegin returns\n"));
 
     /* If sorting index that was created by a prior OP_OpenEphemeral 
     ** instruction ended up not being needed, then change the OP_OpenEphemeral
@@ -6465,6 +6466,7 @@ int sqlite3Select(
 
       /* End the database scan loop.
       */
+      SELECTTRACE(1,pParse,p,("WhereEnd\n"));
       sqlite3WhereEnd(pWInfo);
     }
   }else{
@@ -6658,6 +6660,7 @@ int sqlite3Select(
           WHERE_GROUPBY | (orderByGrp ? WHERE_SORTBYGROUP : 0), 0
       );
       if( pWInfo==0 ) goto select_end;
+      SELECTTRACE(1,pParse,p,("WhereBegin returns\n"));
       if( sqlite3WhereIsOrdered(pWInfo)==pGroupBy->nExpr ){
         /* The optimizer is able to deliver rows in group by order so
         ** we do not have to sort.  The OP_OpenEphemeral table will be
@@ -6706,6 +6709,7 @@ int sqlite3Select(
         sqlite3VdbeAddOp2(v, OP_SorterInsert, pAggInfo->sortingIdx, regRecord);
         sqlite3ReleaseTempReg(pParse, regRecord);
         sqlite3ReleaseTempRange(pParse, regBase, nCol);
+        SELECTTRACE(1,pParse,p,("WhereEnd\n"));
         sqlite3WhereEnd(pWInfo);
         pAggInfo->sortingIdxPTab = sortPTab = pParse->nTab++;
         sortOut = sqlite3GetTempReg(pParse);
@@ -6783,6 +6787,7 @@ int sqlite3Select(
         sqlite3VdbeAddOp2(v, OP_SorterNext, pAggInfo->sortingIdx,addrTopOfLoop);
         VdbeCoverage(v);
       }else{
+        SELECTTRACE(1,pParse,p,("WhereEnd\n"));
         sqlite3WhereEnd(pWInfo);
         sqlite3VdbeChangeToNoop(v, addrSortingIdx);
       }
@@ -6938,11 +6943,13 @@ int sqlite3Select(
         if( pWInfo==0 ){
           goto select_end;
         }
+        SELECTTRACE(1,pParse,p,("WhereBegin returns\n"));
         updateAccumulator(pParse, regAcc, pAggInfo);
         if( regAcc ) sqlite3VdbeAddOp2(v, OP_Integer, 1, regAcc);
         if( minMaxFlag ){
           sqlite3WhereMinMaxOptEarlyOut(v, pWInfo);
         }
+        SELECTTRACE(1,pParse,p,("WhereEnd\n"));
         sqlite3WhereEnd(pWInfo);
         finalizeAggFunctions(pParse, pAggInfo);
       }