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-rw-r--r--mysql-test/t/func_system.test12
1 files changed, 12 insertions, 0 deletions
diff --git a/mysql-test/t/func_system.test b/mysql-test/t/func_system.test
index d7e215f5d48..4a526935491 100644
--- a/mysql-test/t/func_system.test
+++ b/mysql-test/t/func_system.test
@@ -32,6 +32,18 @@ drop table t1;
select TRUE,FALSE,NULL;
#
+# Bug#12351: CONCAT with USER()/DATEBASE() and
+# a constant and a column gets strange results
+#
+create table t1 (c1 char(5)) character set=latin1;
+insert into t1 values('row 1');
+insert into t1 values('row 2');
+insert into t1 values('row 3');
+select concat(user(), '--', c1) from t1;
+select concat(database(), '--', c1) from t1;
+drop table t1;
+
+#
# Bug#8291 Illegal collation mix with USER() function
#
create table t1 (a char(10)) character set latin1;