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SQL 查询问题
- WBOYOriginal
- 2016-06-23 13:36:21928browse
比如，数据表中有r4字段，内容是
a0010b
a0020b
a0030b
a0040b
现在要按范围查询，a0020b到a0040b 之间的内容
表单：请填写最小单号_____请填写最大单号_____
查询语句怎么写？
谢谢
回复讨论(解决方案)
where r4>=a0020b and r4
有没有人会？
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