标签：批量 when 更新 item VALUES jdbcType Mybatis relation id
<!-- 批量更新第一种方法，通过接收传进来的参数list进行循环着组装sql 后两种写法效率以此降低耗时长 -->
<update id="updateBatchStock" >
update oms_good_stock set bindcode=
<foreach collection="list" index="index" separator=" " open="case id" close="end" item="item">
when #{item.id} then #{item.bindcode}
</foreach>,
innum=
<foreach collection="list" index="index" separator=" " open="case id" close="end" item="item">
when #{item.id} then #{item.innum}
</foreach>,
sunit=
<foreach collection="list" index="index" separator=" " open="case id" close="end" item="item">
when #{item.id} then #{item.sunit}
</foreach>,
pname=
<foreach collection="list" index="index" separator=" " open="case id" close="end" item="item">
when #{item.id} then #{item.pname}
</foreach>,
pspec=
<foreach collection="list" index="index" separator=" " open="case id" close="end" item="item">
when #{item.id} then #{item.pspec}
</foreach>,
pstyle=
<foreach collection="list" index="index" separator=" " open="case id" close="end" item="item">
when #{item.id} then #{item.pstyle}
</foreach>,
proddate=
<foreach collection="list" index="index" separator=" " open="case id" close="end" item="item">
when #{item.id} then #{item.proddate}
</foreach>,
ratio=
<foreach collection="list" index="index" separator=" " open="case id" close="end" item="item">
when #{item.id} then #{item.ratio}
</foreach>,
goname=
<foreach collection="list" index="index" separator=" " open="case id" close="end" item="item">
when #{item.id} then #{item.goname}
</foreach>,
whname=
<foreach collection="list" index="index" separator=" " open="case id" close="end" item="item">
when #{item.id} then #{item.whname}
</foreach>,
expidate=
<foreach collection="list" index="index" separator=" " open="case id" close="end" item="item">
when #{item.id} then #{item.expidate}
</foreach>,
create_by=
<foreach collection="list" index="index" separator=" " open="case id" close="end" item="item">
when #{item.id} then #{item.createBy}
</foreach>,
create_time=
<foreach collection="list" index="index" separator=" " open="case id" close="end" item="item">
when #{item.id} then #{item.createTime}
</foreach>,
update_by=
<foreach collection="list" index="index" separator=" " open="case id" close="end" item="item">
when #{item.id} then #{item.updateBy}
</foreach>,
update_time=
<foreach collection="list" index="index" separator=" " open="case id" close="end" item="item">
when #{item.id} then #{item.updateTime}
</foreach>,
is_push_wms=
<foreach collection="list" index="index" separator=" " open="case id" close="end" item="item">
when #{item.id} then #{item.isPushWms}
</foreach>,
gocode=
<foreach collection="list" index="index" separator=" " open="case id" close="end" item="item">
when #{item.id} then #{item.gocode}
</foreach>,
is_delete=
<foreach collection="list" index="index" separator=" " open="case id" close="end" item="item">
when #{item.id} then #{item.isDelete}
</foreach>
where id in
<foreach collection="list" index="index" separator="," open="(" close=")" item="item">
#{item.id}
</foreach>
</update>
<!-- 批量更新第二种方法，通过接收传进来的参数list进行循环着组装sql 后两种写法效率以此降低耗时长 -->
<update id="updateBatch" parameterType="java.util.List" >
<foreach collection="list" index="index" separator=" " item="item">
update oms_good_stock
<set >
<if test="item.bindcode != null and item.bindcode != ''">
bindcode = #{item.bindcode},</if>
<if test="item.innum != null ">innum = #{item.innum},</if>
<if test="item.sunit != null and item.sunit != ''">item.sunit = #{item.sunit},</if>
<if test="item.pname != null and item.pname != ''">item.pname = #{item.pname},</if>
<if test="item.pspec != null and item.pspec != ''">item.pspec = #{item.pspec},</if>
<if test="item.pstyle != null and item.pstyle != ''">item.pstyle = #{item.pstyle},</if>
<if test="item.ratio != null and item.ratio != ''">item.ratio = #{item.ratio},</if>
<if test="item.prodDate != null and item.prodDate != ''">item.prod_date = #{item.prodDate},</if>
<if test="item.goname != null and item.goname != ''">item.goname = #{item.goname},</if>
<if test="item.whname != null and item.whname != ''">item.whname = #{item.whname},</if>
<if test="item.expiDate != null and item.expiDate != '' ">item.expi_date = #{item.expiDate},</if>
<if test="item.createBy != null and item.createBy != ''">item.create_by = #{item.createBy},</if>
<if test="item.createTime != null ">item.create_time = #{item.createTime},</if>
<if test="item.updateBy != null and item.updateBy != ''">item.update_by = #{item.updateBy},</if>
<if test="item.updateTime != null ">item.update_time = #{item.updateTime},</if>
<if test="item.isPushWms != null ">item.isPushWms = #{item.isPushWms},</if>
<if test="item.isDelete != null and item.isDelete != ''">item.is_delete = #{item.isDelete},</if>
</set>
where id = #{item.id}
</foreach>
</update>
<!-- 批量更新第三种方法，通过 case when语句变相的进行批量更新 -->
<update id="updateBatch1" parameterType="java.util.List" >
update standard_relation
<trim prefix="set" suffixOverrides=",">
<trim prefix="standard_from_uuid =case" suffix="end,">
<foreach collection="list" item="i" index="index">
<if test="i.standardFromUuid!=null">
when id=#{i.id} then #{i.standardFromUuid}
</if>
</foreach>
</trim>
<trim prefix="standard_to_uuid =case" suffix="end,">
<foreach collection="list" item="i" index="index">
<if test="i.standardToUuid!=null">
when id=#{i.id} then #{i.standardToUuid}
</if>
</foreach>
</trim>
<trim prefix="gmt_modified =case" suffix="end,">
<foreach collection="list" item="i" index="index">
<if test="i.gmtModified!=null">
when id=#{i.id} then #{i.gmtModified}
</if>
</foreach>
</trim>
</trim>
where
<foreach collection="list" separator="or" item="i" index="index" >
id=#{i.id}
</foreach>
</update>
<!--批量更新第四种方法，用ON DUPLICATE KEY UPDATE-->
<insert id="updateBatch2" parameterType="java.util.List">
insert into standard_relation(id,relation_type, standard_from_uuid,
standard_to_uuid, relation_score, stat,
last_process_id, is_deleted, gmt_created,
gmt_modified,relation_desc)VALUES
<foreach collection="list" item="item" index="index" separator=",">
(#{item.id,jdbcType=BIGINT},#{item.relationType,jdbcType=VARCHAR}, #{item.standardFromUuid,jdbcType=VARCHAR},
#{item.standardToUuid,jdbcType=VARCHAR}, #{item.relationScore,jdbcType=DECIMAL}, #{item.stat,jdbcType=TINYINT},
#{item.lastProcessId,jdbcType=BIGINT}, #{item.isDeleted,jdbcType=TINYINT}, #{item.gmtCreated,jdbcType=TIMESTAMP},
#{item.gmtModified,jdbcType=TIMESTAMP},#{item.relationDesc,jdbcType=VARCHAR})
</foreach>
ON DUPLICATE KEY UPDATE
id=VALUES(id),relation_type = VALUES(relation_type),standard_from_uuid = VALUES(standard_from_uuid),standard_to_uuid = VALUES(standard_to_uuid),
relation_score = VALUES(relation_score),stat = VALUES(stat),last_process_id = VALUES(last_process_id),
is_deleted = VALUES(is_deleted),gmt_created = VALUES(gmt_created),
gmt_modified = VALUES(gmt_modified),relation_desc = VALUES(relation_desc)
</insert>
标签：批量,when,更新,item,VALUES,jdbcType,Mybatis,relation,id 来源： https://www.cnblogs.com/wf-zhang/p/13052296.html
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