如何使用 MySQL 查询来选择前 10 条记录?
要选择前 10 条记录,请在 MySQL 中使用 LIMIT。我们先创建一个表 -
mysql> create table DemoTable -> ( -> PageNumber text -> ); Query OK, 0 rows affected (2.50 sec)
使用 insert 命令在表中插入一些记录 -
mysql> insert into DemoTable values('Page-1'); Query OK, 1 row affected (0.46 sec) mysql> insert into DemoTable values('Page-2'); Query OK, 1 row affected (0.11 sec) mysql> insert into DemoTable values('Page-3'); Query OK, 1 row affected (0.27 sec) mysql> insert into DemoTable values('Page-4'); Query OK, 1 row affected (0.19 sec) mysql> insert into DemoTable values('Page-5'); Query OK, 1 row affected (0.27 sec) mysql> insert into DemoTable values('Page-6'); Query OK, 1 row affected (1.12 sec) mysql> insert into DemoTable values('Page-7'); Query OK, 1 row affected (1.21 sec) mysql> insert into DemoTable values('Page-8'); Query OK, 1 row affected (1.15 sec) mysql> insert into DemoTable values('Page-9'); Query OK, 1 row affected (0.89 sec) mysql> insert into DemoTable values('Page-10'); Query OK, 1 row affected (1.20 sec) mysql> insert into DemoTable values('Page-11'); Query OK, 1 row affected (0.86 sec) mysql> insert into DemoTable values('Page-12'); Query OK, 1 row affected (0.39 sec) mysql> insert into DemoTable values('Page-13'); Query OK, 1 row affected (0.39 sec) mysql> insert into DemoTable values('Page-14'); Query OK, 1 row affected (0.47 sec)
使用 select 语句显示表中所有记录 -
mysql> select *from DemoTable;
输出
这将产生以下输出 -
+------------+ | PageNumber | +------------+ | Page-1 | | Page-2 | | Page-3 | | Page-4 | | Page-5 | | Page-6 | | Page-7 | | Page-8 | | Page-9 | | Page-10 | | Page-11 | | Page-12 | | Page-13 | | Page-14 | +------------+ 14 rows in set (0.00 sec)
以下是选择前 10 条记录的查询 -
mysql> select *from DemoTable limit 0,10;
输出
这将产生以下输出 -
+------------+ | PageNumber | +------------+ | Page-1 | | Page-2 | | Page-3 | | Page-4 | | Page-5 | | Page-6 | | Page-7 | | Page-8 | | Page-9 | | Page-10 | +------------+ 10 rows in set (0.00 sec)
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