获取 MySQL 单元格特定值
让我们首先创建一个表 -
mysql> create table DemoTable ( Name varchar(40), Score int ); Query OK, 0 rows affected (0.72 sec)
使用插入命令在表中插入一些记录 -
mysql> insert into DemoTable values('Chris Brown',78); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable values('John Doe',88); Query OK, 1 row affected (0.11 sec) mysql> insert into DemoTable values('Carol Taylor',98); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable values('David Miller',80); Query OK, 1 row affected (0.68 sec)
使用 select 语句显示表中的所有记录 -
mysql> select *from DemoTable;
这将产生以下输出 -
+--------------+-------+ | Name | Score | +--------------+-------+ | Chris Brown | 78 | | John Doe | 88 | | Carol Taylor | 98 | | David Miller | 80 | +--------------+-------+ 4 rows in set (0.00 sec)
以下查询用于获取单元格的特定值 -
mysql> select Score from DemoTable where Name='Carol Taylor';
这将产生以下输出 -
+-------+ | Score | +-------+ | 98 | +-------+ 1 row in set (0.00 sec)
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