From 52fc05ba1c4c297560ec28906b2902e2a3c522c5 Mon Sep 17 00:00:00 2001
From: drh <drh@noemail.net>
Date: Sat, 7 Mar 2015 20:32:49 +0000
Subject: [PATCH] Fix another problem with the LIKE optimization.

FossilOrigin-Name: 465bfc72d252f94778248253142faeba78ceea02
---
 manifest      | 16 +++++++++-------
 manifest.uuid |  2 +-
 src/where.c   | 26 +++++++++++++++-----------
 3 files changed, 25 insertions(+), 19 deletions(-)

diff --git a/manifest b/manifest
index 55fca4b7f9..8ac17721f1 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Fix\sthe\sLIKE\soptimization\sso\sthat\sit\sfinds\sBLOB\sentries\sin\saddition\sto\stext\nentries.\s\sTicket\s[05f43be8fdda9f].
-D 2015-03-07T13:56:48.044
+C Fix\sanother\sproblem\swith\sthe\sLIKE\soptimization.
+D 2015-03-07T20:32:49.790
 F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
 F Makefile.in 2f643d6968dfc0b82d2e546a0525a39079f9e928
 F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
@@ -307,7 +307,7 @@ F src/vxworks.h c18586c8edc1bddbc15c004fa16aeb1e1342b4fb
 F src/wal.c 39303f2c9db02a4e422cd8eb2c8760420c6a51fe
 F src/wal.h df01efe09c5cb8c8e391ff1715cca294f89668a4
 F src/walker.c c253b95b4ee44b21c406e2a1052636c31ea27804
-F src/where.c 84104123394d38aa530f4e3e12b4ac7efcd7fe19
+F src/where.c 65813699926c15b7041ff2021731f03183aac493
 F src/whereInt.h cbe4aa57326998d89e7698ca65bb7c28541d483c
 F test/8_3_names.test ebbb5cd36741350040fd28b432ceadf495be25b2
 F test/aggerror.test a867e273ef9e3d7919f03ef4f0e8c0d2767944f2
@@ -1241,8 +1241,10 @@ F tool/vdbe_profile.tcl 67746953071a9f8f2f668b73fe899074e2c6d8c1
 F tool/warnings-clang.sh f6aa929dc20ef1f856af04a730772f59283631d4
 F tool/warnings.sh 0abfd78ceb09b7f7c27c688c8e3fe93268a13b32
 F tool/win/sqlite.vsix deb315d026cc8400325c5863eef847784a219a2f
-P 8c1e85aab9e0d90726057e25e2ea0663341c070f 50fa3c5fae90bd3b2f4121e99ab52d79963a6fda
-R 2fc7830b1fa14938513120a1368ba854
-T +closed 50fa3c5fae90bd3b2f4121e99ab52d79963a6fda
+P 74cb0b032fcf598537fae04412771450124ae712
+R 23dd5631417bc0e4cabfa079f9a22509
+T *branch * like-opt-fix
+T *sym-like-opt-fix *
+T -sym-trunk *
 U drh
-Z 4859c93f290241201b6571a3ac6035f4
+Z c34701a311a2e64477c46e48ef38102d
diff --git a/manifest.uuid b/manifest.uuid
index e2d06d5c80..e3c0591701 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-74cb0b032fcf598537fae04412771450124ae712
\ No newline at end of file
+465bfc72d252f94778248253142faeba78ceea02
\ No newline at end of file
diff --git a/src/where.c b/src/where.c
index 64c9652b0b..3e2558d00e 100644
--- a/src/where.c
+++ b/src/where.c
@@ -3024,12 +3024,17 @@ static void addScanStatus(
 ** bound string contants to blobs.  This routine makes the necessary changes
 ** to the OP_String opcodes for that to happen.
 */
-static void whereLikeOptimizationStringFixup(Vdbe *v, WhereLevel *pLevel){
-  VdbeOp *pOp;
-  pOp = sqlite3VdbeGetOp(v, -1);
-  if( pLevel->iLikeRepCntr && pOp->opcode==OP_String8 ){
-    pOp->p3 = pLevel->iLikeRepCntr;
-    pOp->p5 = 1;
+static void whereLikeOptimizationStringFixup(
+  Vdbe *v,                /* prepared statement under construction */
+  WhereLevel *pLevel,     /* The loop that contains the LIKE operator */
+  WhereTerm *pTerm        /* The upper or lower bound just coded */
+){
+  if( pTerm->wtFlags & TERM_LIKEOPT ){
+    VdbeOp *pOp = sqlite3VdbeGetOp(v, -1);
+    if( pLevel->iLikeRepCntr && pOp->opcode==OP_String8 ){
+      pOp->p3 = pLevel->iLikeRepCntr;
+      pOp->p5 = 1;
+    }
   }
 }
 
@@ -3365,9 +3370,8 @@ static Bitmask codeOneLoopStart(
     if( pLoop->wsFlags & WHERE_TOP_LIMIT ){
       pRangeEnd = pLoop->aLTerm[j++];
       nExtraReg = 1;
-      if( pRangeStart
-       && (pRangeStart->wtFlags & TERM_LIKEOPT)!=0
-       && (pRangeEnd->wtFlags & TERM_LIKEOPT)!=0
+      if( (pRangeStart && (pRangeStart->wtFlags & TERM_LIKEOPT)!=0)
+       || (pRangeEnd->wtFlags & TERM_LIKEOPT)!=0
       ){
         pLevel->iLikeRepCntr = ++pParse->nMem;
         testcase( bRev );
@@ -3420,7 +3424,7 @@ static Bitmask codeOneLoopStart(
     if( pRangeStart ){
       Expr *pRight = pRangeStart->pExpr->pRight;
       sqlite3ExprCode(pParse, pRight, regBase+nEq);
-      whereLikeOptimizationStringFixup(v, pLevel);
+      whereLikeOptimizationStringFixup(v, pLevel, pRangeStart);
       if( (pRangeStart->wtFlags & TERM_VNULL)==0
        && sqlite3ExprCanBeNull(pRight)
       ){
@@ -3466,7 +3470,7 @@ static Bitmask codeOneLoopStart(
       Expr *pRight = pRangeEnd->pExpr->pRight;
       sqlite3ExprCacheRemove(pParse, regBase+nEq, 1);
       sqlite3ExprCode(pParse, pRight, regBase+nEq);
-      whereLikeOptimizationStringFixup(v, pLevel);
+      whereLikeOptimizationStringFixup(v, pLevel, pRangeEnd);
       if( (pRangeEnd->wtFlags & TERM_VNULL)==0
        && sqlite3ExprCanBeNull(pRight)
       ){