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-rw-r--r--mysql-test/main/type_date.test22
1 files changed, 22 insertions, 0 deletions
diff --git a/mysql-test/main/type_date.test b/mysql-test/main/type_date.test
index 33598846504..a29f78a679b 100644
--- a/mysql-test/main/type_date.test
+++ b/mysql-test/main/type_date.test
@@ -750,5 +750,27 @@ SHOW CREATE TABLE t2;
DROP TABLE t2,t1;
--echo #
+--echo # MDEV-23388 Assertion `args[0]->decimals == 0' failed in Item_func_round::fix_arg_int
+--echo #
+
+SELECT ROUND(GREATEST('1', CAST('2020-12-12' AS DATE)));
+
+--disable_ps_protocol
+--enable_metadata
+SELECT GREATEST('1', CAST('2020-12-12' AS DATE));
+--disable_metadata
+--enable_ps_protocol
+
+CREATE TABLE t1 (c_date DATE NOT NULL, c_int INT NOT NULL);
+CREATE TABLE t2 AS SELECT
+ GREATEST(c_date,c_date),
+ GREATEST(c_date,c_int),
+ GREATEST(c_int,c_date)
+FROM t1;
+SHOW CREATE TABLE t2;
+DROP TABLE t2;
+DROP TABLE t1;
+
+--echo #
--echo # End of 10.4 tests
--echo #