要显示,请使用DESC命令或information_schema.columns。让我们首先创建一个表并设置选项-
mysql> create table DemoTable ( Color SET('RED','GREEN','BLUE','YELLOW') );
这是使用DESC命令获取SET可用选项列表的查询-
mysql> desc DemoTable;
这将产生以下输出-
+-------+------------------------------------+------+-----+---------+-------+ | Field | Type | Null | Key | Default | Extra | +-------+------------------------------------+------+-----+---------+-------+ | Color | set('RED','GREEN','BLUE','YELLOW') | YES | | NULL | | +-------+------------------------------------+------+-----+---------+-------+ 1 row in set (0.00 sec)
这是使用information_schema.columns概念查询SET可用选项的列表-
mysql> select column_type from information_schema.columns where table_name = 'DemoTable' and column_name = 'Color';
这将产生以下输出-
+------------------------------------+ | COLUMN_TYPE | +------------------------------------+ | set('RED','GREEN','BLUE','YELLOW') | +------------------------------------+ 1 row in set (0.01 sec)