Disable transitive WHERE constraints when there are explicit COLLATE

operators.

FossilOrigin-Name: 4c0455efe57d1e3c27327e942a1509de3eb7b0902bc3b90473e2cba8df90139b

diff --git a/manifest b/manifest
index 68bdecb6eda1f0e19bd8293a6aeb2b54fb872442..e6d7045ae5e82e22d6bdff793c31194824c72ab4 100644 (file)
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C For\sexpressions\sof\sthe\sform\s"(x,\sy...)\sIN\s(SELECT\sa,\sb\s...)"\swhere\sthe\s\nresult\sis\snot\strue,\sconsider\sthe\scollation\ssequences\sof\scolumns\s"a"\sand\s"b"\s\nwhen\sdeterminining\sif\sthe\sresult\sshould\sbe\sfalse\sor\sNULL.
-D 2026-06-01T16:38:10.425
+C Disable\stransitive\sWHERE\sconstraints\swhen\sthere\sare\sexplicit\sCOLLATE\s\noperators.
+D 2026-06-01T18:07:44.560
 F .fossil-settings/binary-glob 61195414528fb3ea9693577e1980230d78a1f8b0a54c78cf1b9b24d0a409ed6a x
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
@@ -818,8 +818,8 @@ F src/wal.h ba252daaa94f889f4b2c17c027e823d9be47ce39da1d3799886bbd51f0490452
 F src/walker.c d5006d6b005e4ea7302ad390957a8d41ed83faa177e412f89bc5600a7462a014
 F src/where.c a1caeb656f74e58de7e7310ee91c6dfb40e975c7dd9b18e61a965aea46a610f2
 F src/whereInt.h 8d94cb116c9e06205c3d5ac87af065fc044f8cf08bfdccd94b6ea1c1308e65da
-F src/wherecode.c 4d573077652f79780d6b50840ab8cbb72053dbb4eb230780dd2a146ab034475d
-F src/whereexpr.c 95d97d148794a4afd751b899816da7286caa81ccda5840b6efdd9aed8218a804
+F src/wherecode.c bc39ccbe3648f01157038b16cc55bdbff128590972b7185521b5526dc2815765
+F src/whereexpr.c e167672449982d8b79bf3a2463324affc03399979689f735ac3a99ce87e14e2a
 F src/window.c c0a38cd32473e8e8e7bc435039f914a36ca42465506dc491c65870c01ddac9fb
 F test/8_3_names.test ebbb5cd36741350040fd28b432ceadf495be25b2
 F test/affinity2.test 4d7a34d328e58ca2a2d78fd76c27614a41ca7ddf4312ded9c68c04f430b3b47d
@@ -1885,7 +1885,7 @@ F test/trace3.test 2deeac66359c9f007f0fc9fb6336994a5d68fc1a65129f322a9e9546fd537
 F test/trans.test 45f6f9ab6f66a7b5744f1caac06b558f95da62501916906cf55586a896f9f439
 F test/trans2.test 62bd045bfc7a1c14c5ba83ba64d21ade31583f76
 F test/trans3.test 91a100e5412b488e22a655fe423a14c26403ab94
-F test/transitive1.test 342b398e4c68deee65a940c5af22a95f44c3090b6539c7a19175afb48ac3fb93
+F test/transitive1.test d6252d06ddc104d13372fce0da93af501546bf5d75cb4d2a1f83b8c27238997a
 F test/trigger1.test 141bd2bbfa82fa91aed7391f50517373c9823ff8f55af35e56313dbc75112ca1
 F test/trigger2.test 30fcb3a6aa6782020d47968735ee6086ed795f73a7affa9406c8d5a36e7b5265
 F test/trigger3.test aa640bb2bbb03edd5ff69c055117ea088f121945
@@ -2198,9 +2198,9 @@ F tool/warnings-clang.sh bbf6a1e685e534c92ec2bfba5b1745f34fb6f0bc2a362850723a9ee
 F tool/warnings.sh a554d13f6e5cf3760f041b87939e3d616ec6961859c3245e8ef701d1eafc2ca2
 F tool/win/sqlite.vsix deb315d026cc8400325c5863eef847784a219a2f
 F tool/winmain.c 00c8fb88e365c9017db14c73d3c78af62194d9644feaf60e220ab0f411f3604c
-P dc1cc4d908df0e36447d0422ecbbbb6d2f59c7b49243407f8a9602e7bb0d1a00
-Q +04d7a9d788cf0bb811483baceb9142f67d4a2380d4af409d5300a92f7972472e
-R 407f163d07684535b5d14e92c70ec991
+P 5ceba3fe8d9fb2b1e44a048b6e010d427b7f464b727b58824a2af1b53d57f1ec
+Q +18ee3a17c589cfd34500b6a6547d0cb51aea4dd14b4e1e4b2d0cf0dbfb32378e
+R efb476f2dd13a8f5e05df48686e926f1
 U drh
-Z c6afdb83ed161a9d5b4f6c0be022d3c7
+Z 6e37514e385a146b4e0673a6db0f81b9
 # Remove this line to create a well-formed Fossil manifest.

diff --git a/manifest.uuid b/manifest.uuid
index a23f3edc2a1cead14530bf68167cb7fa641d6bb8..b6d4d2f7221fb20f96cafc5fad98e5f4bff8ce6c 100644 (file)
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-5ceba3fe8d9fb2b1e44a048b6e010d427b7f464b727b58824a2af1b53d57f1ec
+4c0455efe57d1e3c27327e942a1509de3eb7b0902bc3b90473e2cba8df90139b

diff --git a/src/wherecode.c b/src/wherecode.c
index 8da485f64e877cf6fc9a90dce98c5cd860d7d5bd..8a1a593c70a862103e887b02b839cbaa21e85c67 100644 (file)
--- a/src/wherecode.c
+++ b/src/wherecode.c
@@ -2717,6 +2717,7 @@ Bitmask sqlite3WhereCodeOneLoopStart(
                     WO_EQ|WO_IN|WO_IS, 0);
     if( pAlt==0 ) continue;
     if( pAlt->wtFlags & (TERM_CODED) ) continue;
+    if( ExprHasProperty(pAlt->pExpr, EP_Collate) ) continue;
     if( (pAlt->eOperator & WO_IN)
      && ExprUseXSelect(pAlt->pExpr)
      && (pAlt->pExpr->x.pSelect->pEList->nExpr>1)

diff --git a/src/whereexpr.c b/src/whereexpr.c
index 6e1d46cb4bf5748a0ba69b4fb70146013f47b7bd..334c469038c30c29c0c5497dfd1b272e2b23f448 100644 (file)
--- a/src/whereexpr.c
+++ b/src/whereexpr.c
@@ -954,7 +954,8 @@ static void exprAnalyzeOrTerm(
 **   3.  Not originating in the ON clause of an OUTER JOIN
 **   4.  The operator is not IS or else the query does not contain RIGHT JOIN
 **   5.  The affinities of A and B must be compatible
-**   6.  Both operands use the same collating sequence
+**   6.  Both operands use the same collating sequence, and they must not
+**       use explicit COLLATE clauses.
 ** If this routine returns TRUE, that means that the RHS can be substituted
 ** for the LHS anyplace else in the WHERE clause where the LHS column occurs.
 ** This is an optimization.  No harm comes from returning 0.  But if 1 is
@@ -965,7 +966,7 @@ static int termIsEquivalence(Parse *pParse, Expr *pExpr, SrcList *pSrc){
   CollSeq *pColl;
   if( !OptimizationEnabled(pParse->db, SQLITE_Transitive) ) return 0;  /* (1) */
   if( pExpr->op!=TK_EQ && pExpr->op!=TK_IS ) return 0;                 /* (2) */
-  if( ExprHasProperty(pExpr, EP_OuterON) ) return 0;                   /* (3) */
+  if( ExprHasProperty(pExpr, EP_OuterON|EP_Collate) ) return 0;        /* (3) */
   assert( pSrc!=0 );
   if( pExpr->op==TK_IS
    && pSrc->nSrc>=2

diff --git a/test/transitive1.test b/test/transitive1.test
index 1df4ecec58c2d5eaf3c2cf1a14d1b9aab1490daf..60e8cacab0af640b449bbcf3da98f867aab55d4a 100644 (file)
--- a/test/transitive1.test
+++ b/test/transitive1.test
@@ -14,6 +14,7 @@
 
 set testdir [file dirname $argv0]
 source $testdir/tester.tcl
+set testprefix transitive1
 
 do_execsql_test transitive1-100 {
   CREATE TABLE t1(a TEXT, b TEXT, c TEXT COLLATE NOCASE);
@@ -437,4 +438,89 @@ do_execsql_test transitive1-900 {
   SELECT * FROM t1 CROSS JOIN t2 WHERE a=b AND b='ABC';
 } {abc abc}
 
+#-------------------------------------------------------------------------
+reset_db
+db cache size 0
+
+do_execsql_test 1000 {
+  PRAGMA automatic_index = 0;
+  
+  CREATE TABLE t1(a TEXT);
+  CREATE TABLE t2(b TEXT);
+
+  INSERT INTO t1 VALUES ('hello');
+  INSERT INTO t1 VALUES ('Hello');
+  INSERT INTO t1 VALUES ('HELLO');
+  INSERT INTO t1 VALUES ('HeLLo');
+
+  INSERT INTO t2 VALUES ('hello');
+  INSERT INTO t2 VALUES ('Hello');
+  INSERT INTO t2 VALUES ('HELLO');
+  INSERT INTO t2 VALUES ('HeLLo');
+}
+
+optimization_control db transitive 1
+
+do_execsql_test 1010 {
+  SELECT t1.a, t2.b
+    FROM t1 CROSS JOIN t2
+    WHERE t1.a = t2.b
+    AND t2.b COLLATE NOCASE = 'Hello';
+} {
+  hello hello 
+  Hello Hello 
+  HELLO HELLO 
+  HeLLo HeLLo
+}
+
+optimization_control db transitive 0
+
+do_execsql_test 1020 {
+  SELECT t1.a, t2.b
+    FROM t1 CROSS JOIN t2
+    WHERE t1.a = t2.b
+    AND t2.b COLLATE NOCASE = 'Hello';
+} {
+  hello hello 
+  Hello Hello 
+  HELLO HELLO 
+  HeLLo HeLLo
+}
+
+#-------------------------------------------------------------------------
+reset_db
+
+do_execsql_test 1100 {
+  PRAGMA automatic_index = 0;
+  CREATE TABLE t1(x);
+  CREATE TABLE t2(y);
+
+  INSERT INTO t1 VALUES('ABC');
+  INSERT INTO t2 VALUES('abc');
+}
+
+do_execsql_test 1110 {
+  SELECT * FROM t1 CROSS JOIN t2 
+  WHERE (t1.x COLLATE nocase) = (t2.y COLLATE nocase) 
+    AND (t2.y = 'ABC')
+} {}
+
+#-------------------------------------------------------------------------
+reset_db
+
+do_execsql_test 1200 {
+  PRAGMA automatic_index = 0;
+  CREATE TABLE t1(x);
+  CREATE TABLE t2(y);
+
+  INSERT INTO t1 VALUES('ABC');
+  INSERT INTO t2 VALUES('ABC');
+}
+
+do_execsql_test 1210 {
+  SELECT * FROM t1 CROSS JOIN t2 
+  WHERE t1.x = t2.y
+    AND (t1.x COLLATE nocase = 'abc')
+} {ABC ABC}
+
 finish_test