From 89decf6aa9110638a94bfae90010450b7b60e5de Mon Sep 17 00:00:00 2001
From: "jimw@mysql.com" <>
Date: Wed, 31 Aug 2005 15:04:25 -0700
Subject: [PATCH 1/2] Fix shared memory connection handling on Windows. (Bug
 #12723)

---
 vio/viosocket.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/vio/viosocket.c b/vio/viosocket.c
index c7561890ead..a73a0780bfa 100644
--- a/vio/viosocket.c
+++ b/vio/viosocket.c
@@ -99,7 +99,7 @@ int vio_blocking(Vio * vio __attribute__((unused)), my_bool set_blocking_mode,
 #endif /* !defined(NO_FCNTL_NONBLOCK) */
 #else /* !defined(__WIN__) && !defined(__EMX__) */
 #ifndef __EMX__
-  if (vio->type != VIO_TYPE_NAMEDPIPE)  
+  if (vio->type != VIO_TYPE_NAMEDPIPE && vio->type != VIO_TYPE_SHARED_MEMORY)
 #endif
   { 
     ulong arg;

From 1685040e2b56b914ef7513d2f372114d4b651c99 Mon Sep 17 00:00:00 2001
From: "evgen@moonbone.local" <>
Date: Thu, 15 Sep 2005 21:34:11 +0400
Subject: [PATCH 2/2] Fix bug#12887 Distinct is not always applied after rollup

For queries with GROUP BY and without hidden GROUP BY fields DISTINCT is
optimized away becuase such queries produce result set without duplicates.
But ROLLUP can add rows which may be same to some rows and this fact was
ignored.

Added check so if ROLLUP is present DISTINCT can't be optimized away.
---
 mysql-test/r/olap.result | 12 ++++++++++++
 mysql-test/t/olap.test   |  9 +++++++++
 sql/sql_select.cc        |  2 +-
 3 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/mysql-test/r/olap.result b/mysql-test/r/olap.result
index 65f7c649624..fef990297d9 100644
--- a/mysql-test/r/olap.result
+++ b/mysql-test/r/olap.result
@@ -529,3 +529,15 @@ a	LENGTH(a)	COUNT(*)
 2	1	1
 NULL	NULL	2
 DROP TABLE t1;
+create table t1 ( a varchar(9), b int );
+insert into t1 values('a',1),(null,2);
+select a, max(b) from t1 group by a with rollup;
+a	max(b)
+NULL	2
+a	1
+NULL	2
+select distinct a, max(b) from t1 group by a with rollup;
+a	max(b)
+NULL	2
+a	1
+drop table t1;
diff --git a/mysql-test/t/olap.test b/mysql-test/t/olap.test
index 76c62d14621..4f9790b0de6 100644
--- a/mysql-test/t/olap.test
+++ b/mysql-test/t/olap.test
@@ -263,4 +263,13 @@ SELECT * FROM (SELECT a, LENGTH(a), COUNT(*) FROM t1 GROUP BY a WITH ROLLUP) t;
 
 DROP TABLE t1;
 
+#
+# Bug #12887 Distinct is not always applied after rollup
+#
+create table t1 ( a varchar(9), b int );
+insert into t1 values('a',1),(null,2);
+select a, max(b) from t1 group by a with rollup;
+select distinct a, max(b) from t1 group by a with rollup;
+drop table t1;
+
 # End of 4.1 tests
diff --git a/sql/sql_select.cc b/sql/sql_select.cc
index f702e531a4d..59b82b53b32 100644
--- a/sql/sql_select.cc
+++ b/sql/sql_select.cc
@@ -618,7 +618,7 @@ JOIN::optimize()
   }
   if (group_list || tmp_table_param.sum_func_count)
   {
-    if (! hidden_group_fields)
+    if (! hidden_group_fields && rollup.state == ROLLUP::STATE_NONE)
       select_distinct=0;
   }
   else if (select_distinct && tables - const_tables == 1)