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-rw-r--r--mysql-test/t/insert_select.test9
1 files changed, 9 insertions, 0 deletions
diff --git a/mysql-test/t/insert_select.test b/mysql-test/t/insert_select.test
index 40dc4e20093..834561ed5f7 100644
--- a/mysql-test/t/insert_select.test
+++ b/mysql-test/t/insert_select.test
@@ -164,3 +164,12 @@ INSERT INTO t1 (SEQ, NO) SELECT "1" AS SEQ, IF(MAX(NO) IS NULL, 0, MAX(NO)) + 1
select SQL_BUFFER_RESULT * from t1 WHERE (SEQ = 1);
drop table t1;
+#
+# Bug#10886 - Have to restore default values after update ON DUPLICATE KEY
+#
+create table t1 (f1 int);
+create table t2 (ff1 int unique, ff2 int default 1);
+insert into t1 values (1),(1),(2);
+insert into t2(ff1) select f1 from t1 on duplicate key update ff2=ff2+1;
+select * from t2;
+drop table t1, t2;