Mybatisd对MySQL批量插入、批量更新及批量删除语句

1、批量插入

<insert

id="insertBatch"

parameterType="java.util.List">

insert into

t_student(name, age, class)

values

<foreach

collection="list"

item="item"

index="index"

separator=",">

(

#{item.name,jdbcType=VARCHAR},

#{item.age,jdbcType=INTEGER},

#{item.class,jdbcType=LONGVARCHAR}

)

</foreach>

</insert>

2、批量更新

方式一：

<update id="updateBatch">

<foreach

collection="list"

separator=";"

item="stud">

update t_studetn set

name = #{stud.name},

age = #{stud.age},

class = #{stud.sex},

where id = #{stud.id}

</foreach>

</update>

方式二：

<update

id="updateBatch"

parameterType="list">

UPDATE t_student

SET name = CASE id

<foreach

collection="list"

item="i"

index="index">

WHEN #{i.id} THEN #{i.name}

</foreach>

END,

age = CASE id

<foreach

collection="list"

item="i"

index="index">

WHEN #{i.id} THEN #{i.age}

</foreach>

END

WHERE id IN

<foreach

collection="list"

separator="or"

item="i"

index="index" >

id=#{i.id}

</foreach>

</update>

3、批量删除

<delete id="deleteBatchByParams">

delete from

t_student

where

id IN

<foreach

collection="ids"

item="item"

index="index"

open="(" close=")"

separator=",">

#{item}

</foreach>

</delete>