add more cases

regression-test/data/datatype_p0/ip/test_ip_basic.out

@@ -377,3 +377,33 @@ ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff	4
 1	5be8:dde9:7f0b:d5a7:bd01:b3be:9c69:573b	0.0.0.1
 2	::	127.0.0.1
 
+-- !sql --
+table_ip_default	CREATE TABLE `table_ip_default` (\n  `col0` bigint NOT NULL,\n  `col4` ipv6 NULL DEFAULT "::",\n  `col24` ipv4 NULL DEFAULT "127.0.0.1"\n) ENGINE=OLAP\nUNIQUE KEY(`col0`)\nDISTRIBUTED BY HASH(`col0`) BUCKETS 4\nPROPERTIES (\n"replication_allocation" = "tag.location.default: 1",\n"min_load_replica_num" = "-1",\n"is_being_synced" = "false",\n"storage_medium" = "hdd",\n"storage_format" = "V2",\n"inverted_index_storage_format" = "V2",\n"enable_unique_key_merge_on_write" = "true",\n"light_schema_change" = "true",\n"disable_auto_compaction" = "false",\n"binlog.enable" = "false",\n"binlog.ttl_seconds" = "86400",\n"binlog.max_bytes" = "9223372036854775807",\n"binlog.max_history_nums" = "9223372036854775807",\n"enable_single_replica_compaction" = "false",\n"group_commit_interval_ms" = "10000",\n"group_commit_data_bytes" = "134217728",\n"enable_mow_light_delete" = "false"\n);
+
+-- !sql --
+col0	bigint	No	true	\N	
+col4	ipv6	Yes	false	::	NONE
+col24	ipv4	Yes	false	127.0.0.1	NONE
+
+-- !sql --
+col0	bigint	No	true	\N	
+col4	ipv6	Yes	false	::	NONE
+col24	ipv4	Yes	false	127.0.0.1	NONE
+
+-- !sql --
+2
+
+-- !sql --
+1	5be8:dde9:7f0b:d5a7:bd01:b3be:9c69:573b	0.0.0.1
+2	::	127.0.0.1
+
+-- !sql --
+0
+
+-- !sql --
+0
+
+-- !sql --
+1	5be8:dde9:7f0b:d5a7:bd01:b3be:9c69:573b	0.0.0.1	::	127.0.0.1
+2	::	127.0.0.1	::	127.0.0.1
+

regression-test/suites/datatype_p0/ip/test_ip_basic.groovy

@@ -166,5 +166,21 @@ suite("test_ip_basic") {
     sql """ CREATE TABLE IF NOT EXISTS `table_ip_default` (`col0` bigint NOT NULL, `col4` ipv6 NULL DEFAULT "::",   `col24` ipv4 NULL DEFAULT "127.0.0.1") ENGINE=OLAP UNIQUE KEY(`col0`) DISTRIBUTED BY HASH(`col0`) BUCKETS 4 PROPERTIES ("replication_allocation" = "tag.location.default: 1") """
     sql """ insert into table_ip_default values (1, "5be8:dde9:7f0b:d5a7:bd01:b3be:9c69:573b", "0.0.0.1") """
     sql """ insert into table_ip_default(col0) values (2); """
-    qt_sql """ select * from table_ip_default order by col0""";
+    qt_sql """ select * from table_ip_default order by col0"""
+    // add cases for default value to make sure in all cases, the default value is not lost.
+    // show create table
+    // desc table
+    // create table like
+    // insert into table
+    // alter new ip column with default value
+    qt_sql """ show create table table_ip_default """
+    qt_sql """ desc table_ip_default """
+    sql """ DROP TABLE IF EXISTS table_ip_default_like """
+    sql """ create table table_ip_default_like like table_ip_default """
+    qt_sql """ desc table_ip_default_like"""
+    qt_sql """ insert into table_ip_default_like select * from table_ip_default """
+    qt_sql """ select * from table_ip_default_like order by col0 """
+    qt_sql """ alter table table_ip_default_like add column col25 ipv6 NULL DEFAULT "::" """
+    qt_sql """ alter table table_ip_default_like add column col26 ipv4 NULL DEFAULT "127.0.0.1" """
+    qt_sql """ select * from table_ip_default_like order by col0 """
 }