经过验证 SQL语句中的between 范围1 and 范伟2
语句是包括的范围1和范围2的
SQL> create table test 2 ( 3 test1 number(2) 4 );表已创建。SQL> insert into test values(1);已创建 1 行。SQL> insert into test values(2);已创建 1 行。SQL> insert into test values(10);已创建 1 行。SQL> commit;提交完成。SQL> select * from test where test1 between 1 and 10; TEST1---------- 1 2 10
mysql> use mldnDatabase changedmysql> create table test -> ( -> test1 int -> );Query OK, 0 rows affected (0.69 sec)mysql> insert into test values(1);Query OK, 1 row affected (0.10 sec)mysql> insert into test values(2);Query OK, 1 row affected (0.00 sec)mysql> insert into test values(10);Query OK, 1 row affected (0.00 sec)[size=xx-large]观察此处：[/size]mysql> select * from test where test1 between 1 and 10;+-------+| test1 |+-------+| 1 || 2 || 10 |+-------+3 rows in set (0.07 sec)mysql> alter table test modify test1 varchar(10);Query OK, 3 rows affected (0.27 sec)Records: 3 Duplicates: 0 Warnings: 0mysql> insert into test values('a');Query OK, 1 row affected (0.04 sec)mysql> insert into test values('d');Query OK, 1 row affected (0.02 sec)mysql> insert into test values('z');Query OK, 1 row affected (0.02 sec)mysql> commit;Query OK, 0 rows affected (0.00 sec)[size=xx-large]观察此处：[/size]mysql> select * from test where test1 between 'a' and 'z';+-------+| test1 |+-------+| a || d || z |+-------+3 rows in set (0.02 sec)