Merge rurik.mysql.com:/home/igor/mysql-4.1-opt

into  rurik.mysql.com:/home/igor/mysql-5.0-opt


mysql-test/t/ctype_utf8.test:
  Auto merged
sql/opt_sum.cc:
  Auto merged
mysql-test/r/ctype_utf8.result:
  Manual merge
sql/field.cc:
  Manual merge

4 files changed, 74 insertions, 17 deletions

diff --git a/mysql-test/r/ctype_utf8.result b/mysql-test/r/ctype_utf8.result
index d745de43f3e..991d1711a9e 100644
--- a/mysql-test/r/ctype_utf8.result
+++ b/mysql-test/r/ctype_utf8.result
@@ -1112,6 +1112,46 @@ check table t1;
 Table	Op	Msg_type	Msg_text
 test.t1	check	status	OK
 drop table t1;
+SET NAMES utf8;
+CREATE TABLE t1 (id int PRIMARY KEY,
+a varchar(16) collate utf8_unicode_ci NOT NULL default '',
+b int,
+f varchar(128) default 'XXX',
+INDEX (a(4))
+) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;
+INSERT INTO t1(id, a, b) VALUES
+(1, 'cccc', 50), (2, 'cccc', 70), (3, 'cccc', 30),
+(4, 'cccc', 30), (5, 'cccc', 20), (6, 'bbbbbb', 40),
+(7, 'dddd', 30), (8, 'aaaa', 10), (9, 'aaaa', 50),
+(10, 'eeeee', 40), (11, 'bbbbbb', 60);
+SELECT id, a, b FROM t1;
+id	a	b
+1	cccc	50
+2	cccc	70
+3	cccc	30
+4	cccc	30
+5	cccc	20
+6	bbbbbb	40
+7	dddd	30
+8	aaaa	10
+9	aaaa	50
+10	eeeee	40
+11	bbbbbb	60
+SELECT id, a, b FROM t1 WHERE a BETWEEN 'aaaa' AND 'bbbbbb';
+id	a	b
+8	aaaa	10
+9	aaaa	50
+6	bbbbbb	40
+11	bbbbbb	60
+SELECT id, a FROM t1 WHERE a='bbbbbb';
+id	a
+6	bbbbbb
+11	bbbbbb
+SELECT id, a FROM t1 WHERE a='bbbbbb' ORDER BY b;
+id	a
+6	bbbbbb
+11	bbbbbb
+DROP TABLE t1;
 CREATE TABLE t1(id varchar(20) NOT NULL) DEFAULT CHARSET=utf8;
 INSERT INTO t1 VALUES ('xxx'), ('aa'), ('yyy'), ('aa');
 SELECT id FROM t1;
diff --git a/mysql-test/t/ctype_utf8.test b/mysql-test/t/ctype_utf8.test
index 5ca1f58d233..b58a2cf97d4 100644
--- a/mysql-test/t/ctype_utf8.test
+++ b/mysql-test/t/ctype_utf8.test
@@ -912,6 +912,32 @@ INSERT INTO t1 VALUES('uUABCDEFGHIGKLMNOPRSTUVWXYZ̈bbbbbbbbbbbbbbbbbbbbbbbbbbbb
 check table t1;
 drop table t1;
 
+#
+# Bug#14896: Comparison with a key in a partial index over mb chararacter field
+#
+
+SET NAMES utf8;
+CREATE TABLE t1 (id int PRIMARY KEY,
+                 a varchar(16) collate utf8_unicode_ci NOT NULL default '',
+                 b int,
+                 f varchar(128) default 'XXX',
+                 INDEX (a(4))
+) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;
+INSERT INTO t1(id, a, b) VALUES
+  (1, 'cccc', 50), (2, 'cccc', 70), (3, 'cccc', 30),
+  (4, 'cccc', 30), (5, 'cccc', 20), (6, 'bbbbbb', 40),
+  (7, 'dddd', 30), (8, 'aaaa', 10), (9, 'aaaa', 50),
+  (10, 'eeeee', 40), (11, 'bbbbbb', 60);
+
+SELECT id, a, b FROM t1;
+
+SELECT id, a, b FROM t1 WHERE a BETWEEN 'aaaa' AND 'bbbbbb';
+
+SELECT id, a FROM t1 WHERE a='bbbbbb';
+SELECT id, a FROM t1 WHERE a='bbbbbb' ORDER BY b;
+
+DROP TABLE t1;
+
 # End of 4.1 tests
 
 #
diff --git a/sql/field.cc b/sql/field.cc
index a920d6d91b1..2b9a8c96392 100644
--- a/sql/field.cc
+++ b/sql/field.cc
@@ -6044,17 +6044,6 @@ int Field_string::cmp(const char *a_ptr, const char *b_ptr)
 {
   uint a_len, b_len;
 
-  if (field_charset->strxfrm_multiply > 1)
-  {
-    /*
-      We have to remove end space to be able to compare multi-byte-characters
-      like in latin_de 'ae' and 0xe4
-    */
-    return field_charset->coll->strnncollsp(field_charset,
-                                            (const uchar*) a_ptr, field_length,
-                                            (const uchar*) b_ptr,
-                                            field_length, 0);
-  }
   if (field_charset->mbmaxlen != 1)
   {
     uint char_len= field_length/field_charset->mbmaxlen;
@@ -6063,8 +6052,14 @@ int Field_string::cmp(const char *a_ptr, const char *b_ptr)
   }
   else
     a_len= b_len= field_length;
-  return my_strnncoll(field_charset,(const uchar*) a_ptr, a_len,
-                                    (const uchar*) b_ptr, b_len);
+  /*
+    We have to remove end space to be able to compare multi-byte-characters
+    like in latin_de 'ae' and 0xe4
+  */
+  return field_charset->coll->strnncollsp(field_charset,
+                                          (const uchar*) a_ptr, a_len,
+                                          (const uchar*) b_ptr, b_len,
+                                          0);
 }
 
 
diff --git a/sql/opt_sum.cc b/sql/opt_sum.cc
index 4a7ec0c5928..9770198640c 100644
--- a/sql/opt_sum.cc
+++ b/sql/opt_sum.cc
@@ -569,10 +569,6 @@ static bool matching_cond(bool max_fl, TABLE_REF *ref, KEY *keyinfo,
       break;                        // Found a part od the key for the field
   }
 
-#if 0
-  if (part->length != (((Item_field*) args[0])->field)->field_length)
-    return 0;
-#endif
   bool is_field_part= part == field_part;
   if (!(is_field_part || eq_type))
     return 0;