在 MySQL 中抓取两行之间的数据?


要抓取两行之间的数据,需利用 LIMIT 概念。我们首先创建一个表 −

mysql> create table DemoTable
   (
   Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,
   Name varchar(10)
   );
Query OK, 0 rows affected (0.22 sec)

使用插入命令在表内插入一些记录 −

mysql> insert into DemoTable(Name) values('Larry');
Query OK, 1 row affected (0.06 sec)

mysql> insert into DemoTable(Name) values('Robert');
Query OK, 1 row affected (0.05 sec)

mysql> insert into DemoTable(Name) values('Chris');
Query OK, 1 row affected (0.05 sec)

mysql> insert into DemoTable(Name) values('David');
Query OK, 1 row affected (0.04 sec)

mysql> insert into DemoTable(Name) values('Bob');
Query OK, 1 row affected (0.06 sec)

mysql> insert into DemoTable(Name) values('Sam');
Query OK, 1 row affected (0.04 sec)

mysql> insert into DemoTable(Name) values('Mike');
Query OK, 1 row affected (0.06 sec)

mysql> insert into DemoTable(Name) values('Carol');
Query OK, 1 row affected (0.05 sec)

mysql> insert into DemoTable(Name) values('John');
Query OK, 1 row affected (0.05 sec)

使用 select 语句显示表中的所有记录 −

mysql> select *from DemoTable;

这将生成以下输出 −

+----+--------+
| Id | Name   |
+----+--------+
| 1  | Larry  |
| 2  | Robert |
| 3  | Chris  |
| 4  | David  |
| 5  | Bob    |
| 6  | Sam    |
| 7  | Mike   |
| 8  | Carol  |
| 9  | John   |
+----+--------+
9 rows in set (0.00 sec)

以下查询可抓取两行之间的数据 −

mysql> select *from DemoTable limit 2,3;

这将生成以下输出 -

+----+-------+
| Id | Name  |
+----+-------+
| 3  | Chris |
| 4  | David |
| 5  | Bob   |
+----+-------+
3 rows in set (0.00 sec)

更新于: 30-Jul-2019

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