diff --git a/manifest b/manifest
index 25690ed633..6d73a40bb0 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Merge\sthe\sListPush\sand\sListPop\sVDBE\sopcodes\sinto\sContextPush\sand\sContextPop.\s(CVS\s1972)
-D 2004-09-19T00:50:21
+C Add\scomments\sto\sunused\sP3\sfields\sof\sselected\sinstructions\swhen\sNDEBUG\sis\nnot\sdefined.\s\sThis\smakes\sVDBE\sprogram\sdumps\smore\sreadable\sduring\sdebugging.\s(CVS\s1973)
+D 2004-09-19T02:15:25
 F Makefile.in 76f8790c727cdbe2e1bef19c9c72b6e5da9cb9d8
 F Makefile.linux-gcc a9e5a0d309fa7c38e7c14d3ecf7690879d3a5457
 F README f1de682fbbd94899d50aca13d387d1b3fd3be2dd
@@ -32,12 +32,12 @@ F src/btree.c 470e00b08688f065c2e62a6dcd3fb18880e8e309
 F src/btree.h 94dfec0a1722d33359b23e7e310f2b64ffedf029
 F src/build.c c5ecf114af4ebc2963a03142b6bd6f2284ee35fc
 F src/date.c eb8d5fa1a6d5cfc09031c8852d10ff742a94b15b
-F src/delete.c e887f44aae1e33da1643df58abe86cd9cde45ad1
-F src/expr.c a6d95632ef9c6ad18fade504baa6d5a7225c9fee
+F src/delete.c d862b383a9abc0b79f4588783c2619fe52d74ea7
+F src/expr.c 4a674ed1c91967096aa73af2d0b6f3b93313fc98
 F src/func.c 1fbc5256639586573fd0e70814d6dcd8bc10afc1
 F src/hash.c a97721a55440b7bea31ffe471bb2f6b4123cddd5
 F src/hash.h 1b0c445e1c89ff2aaad9b4605ba61375af001e84
-F src/insert.c 1f2d34d6762279e5e63dfb4a60772d30a5525b00
+F src/insert.c 2c10c001f62cde92e9517ec7516b6584519754d1
 F src/legacy.c d58ea507bce885298a2c8c3cbb0f4bff5d47830b
 F src/main.c 82a952ef3e5f7bacaa1b20060d0588f8767a6774
 F src/md5.c 7ae1c39044b95de2f62e066f47bb1deb880a1070
@@ -55,12 +55,12 @@ F src/pager.c db8f6cb80798091fcff95c1f86873381fbfefee6
 F src/pager.h 67739fe649f33be55dba522ca8a9cc4e42d14f71
 F src/parse.y 9389af67bd49b8e5c9d2968b3315a30565b4a200
 F src/pragma.c 5fb6647fda4c95edb08447a505e6c98c041e5b31
-F src/printf.c a8b92a3bcb4e9cae8066aea39a7b57b566255509
+F src/printf.c 2dfe86e6fcdc83ca55d2f9f4d9771428329eb0c5
 F src/random.c eff68e3f257e05e81eae6c4d50a51eb88beb4ff3
-F src/select.c 5f60fc164a6a72ec26eb8221df4ba45aa8ab6f56
+F src/select.c 13a4e6d0ca2bce8be60e26a499060524fef2e28c
 F src/shell.c 4f1a2760ced81c829defb47b0a3b61ffec61b604
 F src/sqlite.h.in e29a526593b806f148017ed8bada760ada84cf2f
-F src/sqliteInt.h c63aad21da12f12193cfa46a820c51cc837f5048
+F src/sqliteInt.h a7d334b2aca08de0c1cace3eebfabc129279c26f
 F src/table.c 8168c6e824009f8485bff79fc60ea8fea6829b10
 F src/tclsqlite.c 0302e3f42f015d132d1291f3388c06e86c24a008
 F src/test1.c 1305825c29575ee55a1c8b98a191669fd78b6287
@@ -69,8 +69,8 @@ F src/test3.c 5b5b0f3d11b097399c1054fff73d8f3711092301
 F src/test4.c 7c6b9fc33dd1f3f93c7f1ee6e5e6d016afa6c1df
 F src/test5.c b001fa7f1b9e2dc5c2331de62fc641b5ab2bd7a1
 F src/tokenize.c 418ef7ba1149603a30dcf0057e04a3ea0e99edbe
-F src/trigger.c b42ae6ca49e3b935c37b6845fd2aadd2cab78c08
-F src/update.c 0e00300763d2ce0dbd6a0598882a5039580b225e
+F src/trigger.c 3591b88baac4253c93733e34e4d1d74c549fe8a8
+F src/update.c 7157084216c4b02a23cdb23eb6d246aa9034fa4d
 F src/utf.c 328890099db492dda5620ee5f924e244c6e57ff7
 F src/util.c f9b661a3b80a1469777771776a59a5f0e2f193fc
 F src/vacuum.c 257de36230cb988842f66eb08dc6c0250b8e05f3
@@ -78,9 +78,9 @@ F src/vdbe.c 0542852785220807feb02b9dee1150ac2e592c8d
 F src/vdbe.h 067ca8d6750ba4f69a50284765e5883dee860181
 F src/vdbeInt.h 6017100adff362b8dfa37a69e3f1431f084bfa5b
 F src/vdbeapi.c c7208bb89fc4efc605e20328099a540175e2dae6
-F src/vdbeaux.c f312d91a594240831748a8949fdd446a6b2b3bb1
+F src/vdbeaux.c 3b67c86338d6a39a173704ffd9e09ae9ceda6601
 F src/vdbemem.c ef9ac7d32acfe4bce5c5b408b1294c8d9e0cdb56
-F src/where.c 12e214870c84546858ddb9f121165a1fbfce6811
+F src/where.c 5d573333c07f259c8d3b8423d82ba774b78b63a9
 F test/all.test 929bfa932b55e75c96fe2203f7650ba451c1862c
 F test/attach.test feb2ce54e78688df4c84553416d5aec3b2a0112e
 F test/attach2.test 32ca2c1a5a347a7404219a11f9f84739a63d2582
@@ -100,7 +100,7 @@ F test/capi2.test 53e3f399074d5654f26d55b32ccaca7b5b619933
 F test/capi3.test 9258ca75fc98d89477015dcd70aa3d2757b142b8
 F test/capi3b.test 5b6a66f9f295f79f443b5d3f33187fa5ef6cf336
 F test/collate1.test f79736d2ebf5492167ee4d1f4ab4c09dda776b03
-F test/collate2.test c1a3b41f761b28853c5696037f92de928f93233b
+F test/collate2.test 12fd658d8f5106a8a5c8a77d66919d8c89394036
 F test/collate3.test e60b428e07ec945492ba90ff1c895902ee3a8a50
 F test/collate4.test 4a7902b7560686af11d6cace717d876c6937b7ef
 F test/collate5.test 1dd5f0f508c46667f9d4606c7950c414b0bdc0d5
@@ -247,7 +247,7 @@ F www/tclsqlite.tcl 560ecd6a916b320e59f2917317398f3d59b7cc25
 F www/vdbe.tcl 59288db1ac5c0616296b26dce071c36cb611dfe9
 F www/version3.tcl 092a01f5ef430d2c4acc0ae558d74c4bb89638a0
 F www/whentouse.tcl a8335bce47cc2fddb07f19052cb0cb4d9129a8e4
-P 5d3b3a96bcc459a797bd723025f2d38efcfeb6fa
-R 391c503e9b746bc6f666f540b502155a
+P eb9b501ad8b0fa0fd63a67ece05fe142d6a19114
+R c7e379274e1d8907f42f1545aa184a86
 U drh
-Z c87ee13fbd413eb4f4e5b30f3144edca
+Z adae3eae9c54320f47912f08aac3df30
diff --git a/manifest.uuid b/manifest.uuid
index 453d17d957..f78de9442b 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-eb9b501ad8b0fa0fd63a67ece05fe142d6a19114
\ No newline at end of file
+4871c77f8fce36ff230e1f026f4e4e49492515e9
\ No newline at end of file
diff --git a/src/delete.c b/src/delete.c
index f741b5a3a8..fefa454313 100644
--- a/src/delete.c
+++ b/src/delete.c
@@ -12,7 +12,7 @@
 ** This file contains C code routines that are called by the parser
 ** to handle DELETE FROM statements.
 **
-** $Id: delete.c,v 1.80 2004/09/06 17:24:13 drh Exp $
+** $Id: delete.c,v 1.81 2004/09/19 02:15:25 drh Exp $
 */
 #include "sqliteInt.h"
 
@@ -49,6 +49,21 @@ int sqlite3IsReadOnly(Parse *pParse, Table *pTab, int viewOk){
   return 0;
 }
 
+/*
+** Generate code that will open a table for reading.
+*/
+void sqlite3OpenTableForReading(
+  Vdbe *v,        /* Generate code into this VDBE */
+  int iCur,       /* The cursor number of the table */
+  Table *pTab     /* The table to be opened */
+){
+  sqlite3VdbeAddOp(v, OP_Integer, pTab->iDb, 0);
+  sqlite3VdbeAddOp(v, OP_OpenRead, iCur, pTab->tnum);
+  VdbeComment((v, "# %s", pTab->zName));
+  sqlite3VdbeAddOp(v, OP_SetNumColumns, iCur, pTab->nCol);
+}
+
+
 /*
 ** Process a DELETE FROM statement.
 */
@@ -166,9 +181,7 @@ void sqlite3DeleteFrom(
       int endOfLoop = sqlite3VdbeMakeLabel(v);
       int addr;
       if( !isView ){
-        sqlite3VdbeAddOp(v, OP_Integer, pTab->iDb, 0);
-        sqlite3VdbeAddOp(v, OP_OpenRead, iCur, pTab->tnum);
-        sqlite3VdbeAddOp(v, OP_SetNumColumns, iCur, pTab->nCol);
+        sqlite3OpenTableForReading(v, iCur, pTab);
       }
       sqlite3VdbeAddOp(v, OP_Rewind, iCur, sqlite3VdbeCurrentAddr(v)+2);
       addr = sqlite3VdbeAddOp(v, OP_AddImm, 1, 0);
@@ -232,9 +245,7 @@ void sqlite3DeleteFrom(
       addr = sqlite3VdbeAddOp(v, OP_ListRead, 0, end);
       sqlite3VdbeAddOp(v, OP_Dup, 0, 0);
       if( !isView ){
-        sqlite3VdbeAddOp(v, OP_Integer, pTab->iDb, 0);
-        sqlite3VdbeAddOp(v, OP_OpenRead, iCur, pTab->tnum);
-        sqlite3VdbeAddOp(v, OP_SetNumColumns, iCur, pTab->nCol);
+        sqlite3OpenTableForReading(v, iCur, pTab);
       }
       sqlite3VdbeAddOp(v, OP_MoveGe, iCur, 0);
       sqlite3VdbeAddOp(v, OP_Recno, iCur, 0);
diff --git a/src/expr.c b/src/expr.c
index 2e3e611006..c173be5245 100644
--- a/src/expr.c
+++ b/src/expr.c
@@ -12,7 +12,7 @@
 ** This file contains routines used for analyzing expressions and
 ** for generating VDBE code that evaluates expressions in SQLite.
 **
-** $Id: expr.c,v 1.162 2004/09/19 00:50:21 drh Exp $
+** $Id: expr.c,v 1.163 2004/09/19 02:15:25 drh Exp $
 */
 #include "sqliteInt.h"
 #include <ctype.h>
@@ -241,7 +241,8 @@ void sqlite3ExprSpan(Expr *pExpr, Token *pLeft, Token *pRight){
   assert( pRight!=0 );
   assert( pLeft!=0 );
   if( !sqlite3_malloc_failed && pRight->z && pLeft->z ){
-    if( pLeft->dyn==0 && pRight->dyn==0 ){
+    assert( pLeft->dyn==0 || pLeft->z[pLeft->n]==0 );
+    if( pLeft->z[pLeft->n]!=0 && pRight->dyn==0 ){
       pExpr->span.z = pLeft->z;
       pExpr->span.n = pRight->n + Addr(pRight->z) - Addr(pLeft->z);
     }else{
@@ -1241,6 +1242,7 @@ void sqlite3ExprCode(Parse *pParse, Expr *pExpr){
         sqlite3VdbeAddOp(v, OP_AggGet, 0, pExpr->iAgg);
       }else if( pExpr->iColumn>=0 ){
         sqlite3VdbeAddOp(v, OP_Column, pExpr->iTable, pExpr->iColumn);
+        VdbeComment((v, "# %T", &pExpr->span));
       }else{
         sqlite3VdbeAddOp(v, OP_Recno, pExpr->iTable, 0);
       }
@@ -1370,6 +1372,7 @@ void sqlite3ExprCode(Parse *pParse, Expr *pExpr){
     }
     case TK_SELECT: {
       sqlite3VdbeAddOp(v, OP_MemLoad, pExpr->iColumn, 0);
+      VdbeComment((v, "# load subquery result"));
       break;
     }
     case TK_IN: {
@@ -1469,20 +1472,20 @@ void sqlite3ExprCode(Parse *pParse, Expr *pExpr){
       if( !pParse->trigStack ){
         sqlite3ErrorMsg(pParse,
                        "RAISE() may only be used within a trigger-program");
-        pParse->nErr++;
 	return;
       }
-      if( pExpr->iColumn == OE_Rollback ||
-	  pExpr->iColumn == OE_Abort ||
-	  pExpr->iColumn == OE_Fail ){
-	  sqlite3VdbeOp3(v, OP_Halt, SQLITE_CONSTRAINT, pExpr->iColumn,
-                           pExpr->token.z, pExpr->token.n);
-	  sqlite3VdbeDequoteP3(v, -1);
+      if( pExpr->iColumn!=OE_Ignore ){
+         assert( pExpr->iColumn==OE_Rollback ||
+                 pExpr->iColumn == OE_Abort ||
+                 pExpr->iColumn == OE_Fail );
+         sqlite3VdbeOp3(v, OP_Halt, SQLITE_CONSTRAINT, pExpr->iColumn,
+                        pExpr->token.z, pExpr->token.n);
+         sqlite3VdbeDequoteP3(v, -1);
       } else {
-	  assert( pExpr->iColumn == OE_Ignore );
-          sqlite3VdbeAddOp(v, OP_ContextPop, 0, 0);
-	  sqlite3VdbeOp3(v, OP_Goto, 0, pParse->trigStack->ignoreJump,
-                           "(IGNORE jump)", 0);
+         assert( pExpr->iColumn == OE_Ignore );
+         sqlite3VdbeAddOp(v, OP_ContextPop, 0, 0);
+         sqlite3VdbeAddOp(v, OP_Goto, 0, pParse->trigStack->ignoreJump);
+         VdbeComment((v, "# raise(IGNORE)"));
       }
     }
     break;
diff --git a/src/insert.c b/src/insert.c
index 245468f1cf..06f7d5a4b5 100644
--- a/src/insert.c
+++ b/src/insert.c
@@ -12,7 +12,7 @@
 ** This file contains C code routines that are called by the parser
 ** to handle INSERT statements in SQLite.
 **
-** $Id: insert.c,v 1.117 2004/09/17 17:23:15 drh Exp $
+** $Id: insert.c,v 1.118 2004/09/19 02:15:26 drh Exp $
 */
 #include "sqliteInt.h"
 
@@ -1007,6 +1007,7 @@ void sqlite3OpenTableAndIndices(
   assert( v!=0 );
   sqlite3VdbeAddOp(v, OP_Integer, pTab->iDb, 0);
   sqlite3VdbeAddOp(v, op, base, pTab->tnum);
+  VdbeComment((v, "# %s", pTab->zName));
   sqlite3VdbeAddOp(v, OP_SetNumColumns, base, pTab->nCol);
   for(i=1, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, i++){
     sqlite3VdbeAddOp(v, OP_Integer, pIdx->iDb, 0);
diff --git a/src/printf.c b/src/printf.c
index f4dc4eeae8..4744921576 100644
--- a/src/printf.c
+++ b/src/printf.c
@@ -586,7 +586,9 @@ static int vxprintf(
         break;
       case etTOKEN: {
         Token *pToken = va_arg(ap, Token*);
-        (*func)(arg, pToken->z, pToken->n);
+        if( pToken && pToken->z ){
+          (*func)(arg, pToken->z, pToken->n);
+        }
         length = width = 0;
         break;
       }
diff --git a/src/select.c b/src/select.c
index c240c2f3b5..265a402284 100644
--- a/src/select.c
+++ b/src/select.c
@@ -12,7 +12,7 @@
 ** This file contains C code routines that are called by the parser
 ** to handle SELECT statements in SQLite.
 **
-** $Id: select.c,v 1.208 2004/09/08 15:09:41 drh Exp $
+** $Id: select.c,v 1.209 2004/09/19 02:15:26 drh Exp $
 */
 #include "sqliteInt.h"
 
@@ -344,9 +344,11 @@ static void codeLimiter(
       sqlite3VdbeAddOp(v, OP_Pop, nPop, 0);
     }
     sqlite3VdbeAddOp(v, OP_Goto, 0, iContinue);
+    VdbeComment((v, "# skip OFFSET records"));
   }
   if( p->iLimit>=0 ){
     sqlite3VdbeAddOp(v, OP_MemIncr, p->iLimit, iBreak);
+    VdbeComment((v, "# exit when LIMIT reached"));
   }
 }
 
@@ -415,6 +417,7 @@ static int selectInnerLoop(
     sqlite3VdbeAddOp(v, OP_Distinct, distinct, sqlite3VdbeCurrentAddr(v)+3);
     sqlite3VdbeAddOp(v, OP_Pop, pEList->nExpr+1, 0);
     sqlite3VdbeAddOp(v, OP_Goto, 0, iContinue);
+    VdbeComment((v, "# skip indistinct records"));
     sqlite3VdbeAddOp(v, OP_String8, 0, 0);
     sqlite3VdbeAddOp(v, OP_PutStrKey, distinct, 0);
     if( pOrderBy==0 ){
@@ -1223,6 +1226,7 @@ static void computeLimitRegisters(Parse *pParse, Select *p){
     if( v==0 ) return;
     sqlite3VdbeAddOp(v, OP_Integer, -p->nLimit, 0);
     sqlite3VdbeAddOp(v, OP_MemStore, iMem, 1);
+    VdbeComment((v, "# LIMIT counter"));
     p->iLimit = iMem;
   }
   if( p->nOffset>0 ){
@@ -1231,6 +1235,7 @@ static void computeLimitRegisters(Parse *pParse, Select *p){
     if( v==0 ) return;
     sqlite3VdbeAddOp(v, OP_Integer, -p->nOffset, 0);
     sqlite3VdbeAddOp(v, OP_MemStore, iMem, 1);
+    VdbeComment((v, "# OFFSET counter"));
     p->iOffset = iMem;
   }
 }
@@ -2107,9 +2112,7 @@ static int simpleMinMaxQuery(Parse *pParse, Select *p, int eDest, int iParm){
   base = pSrc->a[0].iCursor;
   computeLimitRegisters(pParse, p);
   if( pSrc->a[0].pSelect==0 ){
-    sqlite3VdbeAddOp(v, OP_Integer, pTab->iDb, 0);
-    sqlite3VdbeAddOp(v, OP_OpenRead, base, pTab->tnum);
-    sqlite3VdbeAddOp(v, OP_SetNumColumns, base, pTab->nCol);
+    sqlite3OpenTableForReading(v, base, pTab);
   }
   cont = sqlite3VdbeMakeLabel(v);
   if( pIdx==0 ){
diff --git a/src/sqliteInt.h b/src/sqliteInt.h
index 04228b5b05..91cc0f177f 100644
--- a/src/sqliteInt.h
+++ b/src/sqliteInt.h
@@ -11,7 +11,7 @@
 *************************************************************************
 ** Internal interface definitions for SQLite.
 **
-** @(#) $Id: sqliteInt.h,v 1.321 2004/09/08 20:13:05 drh Exp $
+** @(#) $Id: sqliteInt.h,v 1.322 2004/09/19 02:15:26 drh Exp $
 */
 #ifndef _SQLITEINT_H_
 #define _SQLITEINT_H_
@@ -1263,6 +1263,7 @@ void sqlite3SelectDelete(Select*);
 void sqlite3SelectUnbind(Select*);
 Table *sqlite3SrcListLookup(Parse*, SrcList*);
 int sqlite3IsReadOnly(Parse*, Table*, int);
+void sqlite3OpenTableForReading(Vdbe*, int iCur, Table*);
 void sqlite3DeleteFrom(Parse*, SrcList*, Expr*);
 void sqlite3Update(Parse*, SrcList*, ExprList*, Expr*, int);
 WhereInfo *sqlite3WhereBegin(Parse*, SrcList*, Expr*, int, ExprList**);
diff --git a/src/trigger.c b/src/trigger.c
index 3e601346aa..90ab54e3f3 100644
--- a/src/trigger.c
+++ b/src/trigger.c
@@ -760,7 +760,10 @@ int sqlite3CodeRowTrigger(
         fire_this = 0;
       }
     }
-
+ 
+    /* FIX ME:  Can we not omit the sqliteMalloc() and make pTriggerStack
+    ** point to a stack variable?
+    */
     if( fire_this && (pTriggerStack = sqliteMalloc(sizeof(TriggerStack)))!=0 ){
       int endTrigger;
       SrcList dummyTablist;
diff --git a/src/update.c b/src/update.c
index 60c049d68a..5655bbe6e8 100644
--- a/src/update.c
+++ b/src/update.c
@@ -12,7 +12,7 @@
 ** This file contains C code routines that are called by the parser
 ** to handle UPDATE statements.
 **
-** $Id: update.c,v 1.88 2004/09/06 17:24:13 drh Exp $
+** $Id: update.c,v 1.89 2004/09/19 02:15:26 drh Exp $
 */
 #include "sqliteInt.h"
 
@@ -253,9 +253,7 @@ void sqlite3Update(
     */
     sqlite3VdbeAddOp(v, OP_Dup, 0, 0);
     if( !isView ){
-      sqlite3VdbeAddOp(v, OP_Integer, pTab->iDb, 0);
-      sqlite3VdbeAddOp(v, OP_OpenRead, iCur, pTab->tnum);
-      sqlite3VdbeAddOp(v, OP_SetNumColumns, iCur, pTab->nCol);
+      sqlite3OpenTableForReading(v, iCur, pTab);
     }
     sqlite3VdbeAddOp(v, OP_MoveGe, iCur, 0);
 
diff --git a/src/vdbeaux.c b/src/vdbeaux.c
index 64dddeb56b..11e06462fe 100644
--- a/src/vdbeaux.c
+++ b/src/vdbeaux.c
@@ -304,6 +304,21 @@ void sqlite3VdbeChangeP3(Vdbe *p, int addr, const char *zP3, int n){
   }
 }
 
+#ifndef NDEBUG
+/*
+** Replace the P3 field of the most recently coded instruction with
+** comment text.
+*/
+void sqlite3VdbeComment(Vdbe *p, const char *zFormat, ...){
+  va_list ap;
+  assert( p->nOp>0 );
+  assert( p->aOp[p->nOp-1].p3==0 );
+  va_start(ap, zFormat);
+  sqlite3VdbeChangeP3(p, -1, sqlite3VMPrintf(zFormat, ap), P3_DYNAMIC);
+  va_end(ap);
+}
+#endif
+
 /*
 ** If the P3 operand to the specified instruction appears
 ** to be a quoted string token, then this procedure removes 
diff --git a/src/where.c b/src/where.c
index ec77360d68..ce62b2b078 100644
--- a/src/where.c
+++ b/src/where.c
@@ -12,7 +12,7 @@
 ** This module contains C code that generates VDBE code used to process
 ** the WHERE clause of SQL statements.
 **
-** $Id: where.c,v 1.113 2004/09/06 17:24:13 drh Exp $
+** $Id: where.c,v 1.114 2004/09/19 02:15:26 drh Exp $
 */
 #include "sqliteInt.h"
 
@@ -734,9 +734,7 @@ WhereInfo *sqlite3WhereBegin(
 
     pTab = pTabList->a[i].pTab;
     if( pTab->isTransient || pTab->pSelect ) continue;
-    sqlite3VdbeAddOp(v, OP_Integer, pTab->iDb, 0);
-    sqlite3VdbeAddOp(v, OP_OpenRead, pTabList->a[i].iCursor, pTab->tnum);
-    sqlite3VdbeAddOp(v, OP_SetNumColumns, pTabList->a[i].iCursor, pTab->nCol);
+    sqlite3OpenTableForReading(v, pTabList->a[i].iCursor, pTab);
     sqlite3CodeVerifySchema(pParse, pTab->iDb);
     if( (pIx = pWInfo->a[i].pIdx)!=0 ){
       sqlite3VdbeAddOp(v, OP_Integer, pIx->iDb, 0);
@@ -763,6 +761,7 @@ WhereInfo *sqlite3WhereBegin(
       pLevel->iLeftJoin = pParse->nMem++;
       sqlite3VdbeAddOp(v, OP_String8, 0, 0);
       sqlite3VdbeAddOp(v, OP_MemStore, pLevel->iLeftJoin, 1);
+      VdbeComment((v, "# init LEFT JOIN no-match flag"));
     }
 
     pIdx = pLevel->pIdx;
@@ -1141,6 +1140,7 @@ WhereInfo *sqlite3WhereBegin(
       pLevel->top = sqlite3VdbeCurrentAddr(v);
       sqlite3VdbeAddOp(v, OP_Integer, 1, 0);
       sqlite3VdbeAddOp(v, OP_MemStore, pLevel->iLeftJoin, 1);
+      VdbeComment((v, "# record LEFT JOIN hit"));
       for(pTerm=aExpr, j=0; j<nExpr; j++, pTerm++){
         if( pTerm->p==0 ) continue;
         if( (pTerm->prereqAll & loopMask)!=pTerm->prereqAll ) continue;
diff --git a/test/collate2.test b/test/collate2.test
index b3e871de6b..896f5af5f2 100644
--- a/test/collate2.test
+++ b/test/collate2.test
@@ -12,7 +12,7 @@
 # This file implements regression tests for SQLite library.  The
 # focus of this script is page cache subsystem.
 #
-# $Id: collate2.test,v 1.2 2004/06/11 10:51:41 danielk1977 Exp $
+# $Id: collate2.test,v 1.3 2004/09/19 02:15:26 drh Exp $
 
 set testdir [file dirname $argv0]
 source $testdir/tester.tcl
@@ -602,7 +602,3 @@ do_test collate2-5.5 {
 } {aa aa}
 
 finish_test
-
-
-
-