MySQL 如何显示bit(1)字段

首先让我们创建一个表。这里，我们的列是bit(1)类型的-

mysql> create table DemoTable
(
   isCaptured bit(1)
);
Query OK, 0 rows affected (1.00 sec)

使用插入命令在表中插入一些记录-

mysql> insert into DemoTable values(0);
Query OK, 1 row affected (0.26 sec)
mysql> insert into DemoTable values(1);
Query OK, 1 row affected (0.27 sec)
mysql> insert into DemoTable values(0);
Query OK, 1 row affected (0.47 sec)
mysql> insert into DemoTable values(1);
Query OK, 1 row affected (0.29 sec)

以下是使用select语句从表中显示所有记录的查询-

mysql> select *from DemoTable;

这将产生以下输出-

+------------+
| isCaptured |
+------------+
|            |
|            |
|            |
|            |
+------------+
4 rows in set (0.00 sec)

以下是在MySQL中查看bit(1)字段以显示字段的查询-

mysql> select isCaptured+0 AS Visible from DemoTable;

这将产生以下输出-

+---------+
| Visible |
+---------+
| 0       |
| 1       |
| 0       |
| 1       |
+---------+
4 rows in set (0.05 sec)

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