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  • mybatis SQL语句

    insert into 表名
    <trim prefix="(" suffix=")"  suffixOverrides=",">
      <if test="createTime != null">
        CREATE_TIME,
      </if>
    </trim>
    <trim prefix="values (" suffix=")" suffixOverrides=",">
      <if test="createTime != null">
        #{createTime,jdbcType=TIMESTAMP},
      </if>
    </trim>

    insert into 表名 (createTime) values(createTime)

    **********************************************新增sql****************************************************

    select * from user

    <trim prefix="where" prefixOverrides="AND|OR">

      <if test="name!=null and name.length()>0">AND name=#{name}</if>

      <if test=""gender!=null and gender.length()>0>AND gender=#{gender}</if>

    </tirm>

    select * from user where name = 'xx' and gender = 'xx'

    **********************************************查询sql****************************************************

    update 表名

    <trim prefix="set" suffixOverrides="," suffix="where id=#{id}">

      <if test="name!=null and name,length()>0">name=#{name},</if>

      <if test="password!=null and password.length()>0">password=#{password},</if>

    </trim>

    update 表名 set name='xx' , gender='xx' where id='x'

    **********************************************修改sql****************************************************

    注解: prefix:前缀

          suffix:后缀

        prefixOverrides:前缀覆盖

           suffixOverrides:后缀覆盖

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  • 原文地址:https://www.cnblogs.com/zhangyong0908/p/9503926.html
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