在MySQL表中使用“year”作为列名可行吗?
可以在MySQL表中使用“year”作为列名,因为它不是保留字。先创建一个表-
mysql> create table DemoTable
(
Year int
);
Query OK, 0 rows affected (0.87 sec)
使用插入命令在表中插入一些记录 –
mysql> insert into DemoTable values(1995);
Query OK, 1 row affected (0.15 sec)
mysql> insert into DemoTable values(2019);
Query OK, 1 row affected (0.18 sec)
mysql> insert into DemoTable values(2016);
Query OK, 1 row affected (0.18 sec)
mysql> insert into DemoTable values(2018);
Query OK, 1 row affected (0.13 sec)
使用select语句从表中显示所有记录 –
mysql> select *from DemoTable;
这将产生以下输出 –
+------+
| Year |
+------+
| 1995 |
| 2019 |
| 2016 |
| 2018 |
+------+
4 rows in set (0.00 sec)
以下是从MySQL表中选取“year”命名列的查询语句 –
mysql> select year from DemoTable;
这将产生以下输出 –
+------+
| year |
+------+
| 1995 |
| 2019 |
| 2016 |
| 2018 |
+------+
4 rows in set (0.00 sec)
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