MyBatis_Dynamic_SQL

SSM 框架学习 (MyBatis篇)

二、MyBatis 动态SQL使用

在上一个项目的基础上修改，这里主要展示修改部分的内容

1、用户表查询操作-if

select u.*, r.roleName from smbms_user u, smbms_role r

where u.userRole = r.id

and u.userRole = #{userRole}

and u.userName like CONCAT ('%',#{userName},'%')

2、 动态条件查询-if-where

select u.*, r.roleName from smbms_user u, smbms_role r

u.userRole = r.id

and u.userName like CONCAT ('%',#{userName},'%')

and r.userRole = #{userRole}

3、 动态条件更新数据-if-set

update smbms_user

userCode=#{userCode},

userName=#{userName},

userPassword=#{userPassword},

gender=#{gender},

birthday=#{birthday},

phone=#{phone},

address=#{address},

userRole=#{userRole},

modifyBy=#{modifyBy},

modifyDate=#{modifyDate}

where id=#{id}

4、 动态条件查找数据-if-trim-prefix-prefixOverrides

select * from smbms_user

and userName like CONCAT ('%',#{userName},'%')

and userRole = #{userRole}

5、 动态条件修改数据-if-trim-prefix-suffixOverrides-suffix

update smbms_user

userCode=#{userCode},

userName=#{userName},

userPassword=#{userPassword},

gender=#{gender},

birthday=#{birthday},

phone=#{phone},

address=#{address},

userRole=#{userRole},

modifyBy=#{modifyBy},

modifyDate=#{modifyDate},

6、 动态条件查找数据-foreach-array

select * from smbms_user where userRole in

#{roleIds}

7、 动态条件查找数据-foreach-list

select * from smbms_user where userRole in

#{roleIdList}

8、 动态条件查找数据-foreach-map

select * from smbms_user where userRole in

#{roleIdMap}

9、 动态条件查找数据-trim-choose

select * from smbms_user

and userName like CONCAT ('%',#{userName},'%')

and userCode like CONCAT ('%',#{userCode},'%')

and userRole = #{userRole}

and YEAR(creationDate) = YEAR(#{creationDate})

10、动态条件查询用户列表-分页查询

select u.*, r.roleName from smbms_user u, smbms_role r

where u.userRole = r.id

and u.userRole = #{userRole}

and u.userName like CONCAT ('%',#{userName},'%')

order by u.creationDate DESC limit #{from}, #{pageSize}

@Author: 瞌睡虫

@mybatis-3.2.2

@Database: mysql 5.7.15

@Tool: MyEclipse