Merge polly.local:/tmp/20924/bug20294/my41-bug20294

into  polly.local:/home/kaa/src/maint/m41-maint--07OGk


sql/item_cmpfunc.cc:
  Auto merged
sql/item_cmpfunc.h:
  Auto merged
sql/item_func.h:
  Auto merged
sql/sql_class.h:
  Auto merged

mysql-test/r/case.result

@@ -177,3 +177,10 @@ from t1 where b=3 group by b;
 min(a)	min(case when 1=1 then a else NULL end)	min(case when 1!=1 then NULL else a end)
 2	2	2
 drop table t1;
+SELECT CASE 1 WHEN 1 THEN 18446744073709551615 ELSE 1 END;
+CASE 1 WHEN 1 THEN 18446744073709551615 ELSE 1 END
+18446744073709551615
+SELECT COALESCE(18446744073709551615);
+COALESCE(18446744073709551615)
+18446744073709551615
+End of 4.1 tests

mysql-test/r/func_if.result

@@ -99,3 +99,10 @@ a	NULLIF(a,'')
 NULL	NULL
 	NULL
 DROP TABLE t1;
+SELECT IF(1 != 0, 18446744073709551615, 1);
+IF(1 != 0, 18446744073709551615, 1)
+18446744073709551615
+SELECT IFNULL(NULL, 18446744073709551615);
+IFNULL(NULL, 18446744073709551615)
+18446744073709551615
+End of 4.1 tests

mysql-test/r/func_test.result

@@ -183,3 +183,10 @@ select 5.1 mod 3, 5.1 mod -3, -5.1 mod 3, -5.1 mod -3;
 select 5 mod 3, 5 mod -3, -5 mod 3, -5 mod -3;
 5 mod 3	5 mod -3	-5 mod 3	-5 mod -3
 2	2	-2	-2
+SELECT GREATEST(1, 18446744073709551615);
+GREATEST(1, 18446744073709551615)
+18446744073709551615
+SELECT LEAST(1, 18446744073709551615);
+LEAST(1, 18446744073709551615)
+1
+End of 4.1 tests

mysql-test/r/user_var.result

@@ -203,3 +203,8 @@ select @@global.version;
 select @@session.VERSION;
 @@session.VERSION
 #
+set @a=18446744073709551615;
+select @a;
+@a
+18446744073709551615
+End of 4.1 tests

mysql-test/t/case.test

@@ -130,4 +130,12 @@ select min(a), min(case when 1=1 then a else NULL end),
 from t1 where b=3 group by b;
 drop table t1;
 
-# End of 4.1 tests
+#
+# Bug #20924: CAST(expr as UNSIGNED) returns SIGNED value when used in various
+# functions
+# - UNSIGNED values in CASE and COALESCE are treated as SIGNED
+#
+SELECT CASE 1 WHEN 1 THEN 18446744073709551615 ELSE 1 END;
+SELECT COALESCE(18446744073709551615);
+
+--echo End of 4.1 tests

mysql-test/t/func_if.test

@@ -73,4 +73,18 @@ SELECT a, NULLIF(a,'') FROM t1 WHERE NULLIF(a,'') IS NULL;
 
 DROP TABLE t1;
 
-# End of 4.1 tests
+#
+# Bug #20924: CAST(expr as UNSIGNED) returns SIGNED value when used in various
+# functions
+# - UNSIGNED values in IF() are treated as SIGNED
+#
+SELECT IF(1 != 0, 18446744073709551615, 1);
+
+#
+# Bug #20924: CAST(expr as UNSIGNED) returns SIGNED value when used in various
+# functions
+# - UNSIGNED values in IFNULL() are treated as SIGNED
+#
+SELECT IFNULL(NULL, 18446744073709551615);
+
+--echo End of 4.1 tests

mysql-test/t/func_test.test

@@ -108,4 +108,12 @@ select 5.1 mod 3, 5.1 mod -3, -5.1 mod 3, -5.1 mod -3;
 
 select 5 mod 3, 5 mod -3, -5 mod 3, -5 mod -3;
 
-# End of 4.1 tests
+#
+# Bug #20924: CAST(expr as UNSIGNED) returns SIGNED value when used in various
+# functions
+# - UNSIGNED values in GREATEST() and LEAST() are treated as SIGNED
+#
+SELECT GREATEST(1, 18446744073709551615);
+SELECT LEAST(1, 18446744073709551615);
+
+--echo End of 4.1 tests

mysql-test/t/user_var.test

@@ -141,4 +141,12 @@ select @@global.version;
 --replace_column 1 #
 select @@session.VERSION;
 
-# End of 4.1 tests
+#
+# Bug #20924: CAST(expr as UNSIGNED) returns SIGNED value when used in various
+# functions
+# - SET on a user variable saves UNSIGNED as SIGNED
+#
+set @a=18446744073709551615;
+select @a;
+
+--echo End of 4.1 tests