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-rw-r--r--mysql-test/t/case.test11
1 files changed, 11 insertions, 0 deletions
diff --git a/mysql-test/t/case.test b/mysql-test/t/case.test
index 87e456baba7..ac60d7298ce 100644
--- a/mysql-test/t/case.test
+++ b/mysql-test/t/case.test
@@ -107,3 +107,14 @@ explain extended SELECT
COALESCE('a' COLLATE latin1_bin,'b');
SHOW CREATE TABLE t1;
DROP TABLE t1;
+
+# Test for BUG#10151
+SELECT 'case+union+test'
+UNION
+SELECT CASE LOWER('1') WHEN LOWER('2') THEN 'BUG' ELSE 'nobug' END;
+
+SELECT CASE LOWER('1') WHEN LOWER('2') THEN 'BUG' ELSE 'nobug' END;
+
+SELECT 'case+union+test'
+UNION
+SELECT CASE '1' WHEN '2' THEN 'BUG' ELSE 'nobug' END;