1 files changed, 50 insertions, 0 deletions
diff --git a/mysql-test/t/partition.test b/mysql-test/t/partition.test
index 21c385485cc..f2e8cbb2da2 100644
--- a/mysql-test/t/partition.test
+++ b/mysql-test/t/partition.test
@@ -2267,3 +2267,53 @@ DROP TABLE t1;
 SET GLOBAL myisam_use_mmap=default;
 
 --echo End of 5.1 tests
+
+--echo #
+--echo # BUG#55385: UPDATE statement throws an error, but still updates
+--echo #            the table entries
+
+CREATE TABLE t1_part (
+  partkey int,
+  nokey int
+) PARTITION BY LINEAR HASH(partkey) PARTITIONS 3;
+
+INSERT INTO t1_part VALUES (1, 1) , (10, 10);
+CREATE VIEW v1 AS SELECT * FROM t1_part;
+
+--echo
+--echo # Should be (1,1),(10,10)
+SELECT * FROM t1_part;
+
+--echo
+--echo # Case 1
+--echo # Update is refused because partitioning key is updated
+--error ER_MULTI_UPDATE_KEY_CONFLICT
+UPDATE t1_part AS A NATURAL JOIN t1_part B SET A.partkey = 2, B.nokey = 3;
+--error ER_MULTI_UPDATE_KEY_CONFLICT
+UPDATE t1_part AS A NATURAL JOIN t1_part B SET A.nokey = 2, B.partkey = 3;
+
+--echo
+--echo # Case 2
+--echo # Like 1, but partition accessed through a view
+--error ER_MULTI_UPDATE_KEY_CONFLICT
+UPDATE t1_part AS A NATURAL JOIN v1 as B SET A.nokey = 2 , B.partkey = 3;
+--error ER_MULTI_UPDATE_KEY_CONFLICT
+UPDATE v1 AS A NATURAL JOIN t1_part as B SET A.nokey = 2 , B.partkey = 3;
+
+--echo
+--echo # Should be (1,1),(10,10)
+SELECT * FROM t1_part;
+
+--echo
+--echo # Case 3
+--echo # Update is accepted because partitioning key is not updated
+UPDATE t1_part AS A NATURAL JOIN t1_part B SET A.nokey = 2 , B.nokey = 3;
+
+--echo
+--echo # Should be (1,3),(10,3)
+SELECT * FROM t1_part;
+
+--echo
+# Cleanup
+DROP VIEW v1;
+DROP TABLE t1_part;