Mybatis之SQLMapper大全

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头引入 -->

<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >

结果map映射-->

标签定义-->

<sql id="Example_Where_Clause" >
<where >
<foreach collection="oredCriteria" item="criteria" separator="or" >
<if test="criteria.valid" >
<trim prefix="(" suffix=")" prefixOverrides="and" >
<foreach collection="criteria.criteria" item="criterion" >
<choose >
<when test="criterion.noValue" >
and ${criterion.condition}
</when>
<when test="criterion.singleValue" >
and ${criterion.condition} #{criterion.value}
</when>
<when test="criterion.betweenValue" >
and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}
</when>
<when test="criterion.listValue" >
and ${criterion.condition}
<foreach collection="criterion.value" item="listItem" open="(" close=")" separator="," >
#{listItem}
</foreach>
</when>
</choose>
</foreach>
</trim>
</if>
</foreach>
</where>
</sql>

insert语句-->

<insert id="itemPublish" parameterType="item" useGeneratedKeys="true" keyProperty="id">
insert into item (platform_id, seller_id,
shop_id, supply_seller_id, supply_shop_id, operator_id,
item_name, cid,second_cid, brand_id,
unit, origin, ad,
category_attributes, spec_attributes, sale_status,
packing_list, describe_url, created,
modified, shop_cid, listing_time,
delisting_time, operator,
add_source, store_status, yn,copy_status,publishuserId,industry_label,
cash_coupon_support,meet_coupon_support,vip_discount_support,detail_page_qrcode
)
values ( #{platformId,jdbcType=BIGINT}, #{sellerId,jdbcType=BIGINT},
#{shopId,jdbcType=BIGINT}, #{supplySellerId,jdbcType=BIGINT}, #{supplyShopId,jdbcType=BIGINT}, #{operatorId,jdbcType=INTEGER},
#{itemName,jdbcType=VARCHAR}, #{cid,jdbcType=BIGINT},#{secondCid}, #{brandId,jdbcType=BIGINT},
#{unit,jdbcType=VARCHAR}, #{origin,jdbcType=VARCHAR}, #{ad,jdbcType=VARCHAR},
#{categoryAttributes,jdbcType=VARCHAR}, #{specAttributes,jdbcType=VARCHAR}, #{saleStatus,jdbcType=INTEGER},
#{packingList,jdbcType=VARCHAR}, #{describeUrl,jdbcType=VARCHAR}, now(),
now(),#{shopCid,jdbcType=BIGINT},#{listingTime,jdbcType=TIMESTAMP},
#{delistingTime,jdbcType=TIMESTAMP}, #{operator,jdbcType=INTEGER},
#{addSource,jdbcType=INTEGER},#{storeStatus,jdbcType=INTEGER},1,#{copyStatus,jdbcType=INTEGER}, #{publishuserId,jdbcType=BIGINT},#{industryLabel,jdbcType=VARCHAR},
#{cashCouponSupport,jdbcType=INTEGER},#{meetCouponSupport,jdbcType=INTEGER},#{vipDiscountSupport,jdbcType=INTEGER},#{detailPageQrcode,jdbcType=VARCHAR}
)
</insert>

<insert id="insertSelective" parameterType="com....ItemImport" >
insert into item_import_tmp
<trim prefix="(" suffix=")" suffixOverrides="," >
<if test="id != null" >
id,
</if>
<if test="platformId != null" >
platform_id,
</if>
<if test="itemName != null" >
item_name,
</if>
<if test="batchNo != null" >
batch_no,
</if>
<if test="state != null" >
state,
</if>
<if test="failNum != null" >
fail_num,
</if>
<if test="failReason != null" >
fail_reason,
</if>
<if test="created != null" >
created,
</if>
<if test="modified != null" >
modified,
</if>
<if test="yn != null" >
yn,
</if>
<if test="itemInfo != null" >
item_info,
</if>
</trim>
<trim prefix="values (" suffix=")" suffixOverrides="," >
<if test="id != null" >
#{id,jdbcType=BIGINT},
</if>
<if test="platformId != null" >
#{platformId,jdbcType=BIGINT},
</if>
<if test="itemName != null" >
#{itemName,jdbcType=VARCHAR},
</if>
<if test="batchNo != null" >
#{batchNo,jdbcType=VARCHAR},
</if>
<if test="state != null" >
#{state,jdbcType=INTEGER},
</if>
<if test="failNum != null" >
#{failNum,jdbcType=INTEGER},
</if>
<if test="failReason != null" >
#{failReason,jdbcType=VARCHAR},
</if>
<if test="created != null" >
#{created,jdbcType=TIMESTAMP},
</if>
<if test="modified != null" >
#{modified,jdbcType=TIMESTAMP},
</if>
<if test="yn != null" >
#{yn,jdbcType=INTEGER},
</if>
<if test="itemInfo != null" >
#{itemInfo,jdbcType=LONGVARCHAR},
</if>
</trim>
</insert>

删除语句-->

<delete id="deleteByPrimaryKey" parameterType="java.lang.Long" >
delete from item_import_tmp
where id = #{id,jdbcType=BIGINT}
</delete>

<delete id="deleteByExample" parameterType="com.jd.ecc.b2b.item.domain.item.domain.ItemImportExample" >
delete from item_import_tmp
<if test="_parameter != null" >
<include refid="Example_Where_Clause" />
</if>
</delete>

修改语句-->

<update id="updateSaleStatus" parameterType="map">
UPDATE item
<set>
store_status = #{storeStatus},
<if test="saleStatus != null">
sale_status = #{saleStatus}
</if>
</set>
WHERE id = #{itemId}
AND platform_id = #{platformId}
</update>

<update id="updateItem" parameterType="itemPublish">
update item set
operator_id=#{operatorId,jdbcType=INTEGER},item_name=#{itemName,jdbcType=VARCHAR},cid=#{cid,jdbcType=BIGINT},second_cid=#{secondCid},brand_id=#{brandId,jdbcType=BIGINT},
unit=#{unit,jdbcType=VARCHAR},origin=#{origin,jdbcType=VARCHAR},ad=#{ad,jdbcType=VARCHAR},category_attributes=#{categoryAttributes,jdbcType=VARCHAR},
spec_attributes=#{specAttributes,jdbcType=VARCHAR},sale_status=#{saleStatus},store_status = #{storeStatus},
packing_list=#{packingList,jdbcType=VARCHAR},describe_url=#{describeUrl,jdbcType=VARCHAR},shop_cid=#{shopCid,jdbcType=BIGINT},
operator=#{operator,jdbcType=INTEGER},industry_label=#{industryLabel},
cash_coupon_support=#{cashCouponSupport},meet_coupon_support=#{meetCouponSupport},vip_discount_support=#{vipDiscountSupport}
<if test="publishuserId != null">
,publishuserId=#{publishuserId}
</if>
where id=#{id,jdbcType=BIGINT} and platform_id=#{platformId} and yn=1
</update>

查询语句 -->

<select id="queryItems" parameterType="sellSupplyItemInfoVo" resultMap="SellSupplyItemMap">
select DISTINCT i.id itemId,i.platform_id, i.item_name, sii.supply_seller_id, sii.supply_shop_id,ip.picture_url,
category.cname1, category.cname2, category.cname3, category.cname4
from shop_item_library sii
JOIN item i
on sii.item_id=i.id
and i.store_status = 30
and sii.supply_status = 0
JOIN item_picture ip
on i.id = ip.item_id
LEFT JOIN item_sku isk
on i.id = isk.item_id
LEFT JOIN item_brand ib
on i.brand_id = ib.id
JOIN
(
SELECT c4.c_name cname1,c3.c_name cname2,c2.c_name cname3,c1.c_name cname4,c1.cid cid
FROM item_category c1
LEFT JOIN item_category c2 ON c1.parent_cid = c2.cid
LEFT JOIN item_category c3 ON c2.parent_cid = c3.cid
LEFT JOIN item_category c4 ON c3.parent_cid = c4.cid
WHERE
c1.platform_id = #{platformId}
<if test="cid != null and cid != ''">
And c1.cid= #{cid}
</if>
) category ON i.cid = category.cid
where sii.supply_seller_id = #{supplySellerId}
AND i.platform_id = #{platformId}
<if test="productCode != null and productCode != ''">
AND isk.product_code LIKE CONCAT('%', #{productCode},'%' )
</if>
<if test="modelCode != null and modelCode != ''">
AND isk.model_code LIKE CONCAT('%', #{modelCode},'%' )
</if>
<if test="itemName != null and itemName != ''">
AND i.item_name LIKE CONCAT('%', #{itemName},'%' )
</if>
</select>

<select id="selectByExample" resultMap="BaseResultMap" parameterType="com....ItemImportExample" >
select
<if test="distinct" >
distinct
</if>
'true' as QUERYID,
<include refid="Base_Column_List" />
from item_import_tmp
<if test="_parameter != null" >
<include refid="Example_Where_Clause" />
</if>
<if test="orderByClause != null" >
order by ${orderByClause}
</if>
</select>

时间判断

<if test="endTime != null">
AND up.audit_time < DATE_ADD(#{endTime}, INTERVAL 1 DAY)
</if>

一次更新多条：

<update id="batchUpdate" parameterType="list">
update item_category
<trim prefix="set" suffixOverrides=",">
<trim prefix="cate_code_path =case" suffix="end,">
<foreach collection="list" item="i" index="index">
<if test="i.cateCodePath!=null">
when (cid = #{i.cid} and platform_id = #{i.platformId}) then #{i.cateCodePath}
</if>
</foreach>
</trim>

<trim prefix="cate_name_path =case" suffix="end," >
<foreach collection="list" item="i" index="index">
<if test="i.cateNamePath!=null">
when (cid = #{i.cid} and platform_id = #{i.platformId}) then #{i.cateNamePath}
</if>
</foreach>
</trim>
</trim>
where
<foreach collection="list" separator="or" item="i" index="index">
(cid = #{i.cid} and platform_id = #{i.platformId})
</foreach>
</update>

最后说一下CDATA 区段的用法：

<select id="queryItemCategoryAttrIds" resultType="java.lang.String">
<![CDATA[
SELECT concat(id,'-',uuid) as uuid
FROM item_category_attr_import_tmp icit
WHERE icit.platform_id = #{platformId} AND icit.yn = 1 AND icit.status in(10,40)
and icit.try_num < 5
]]>
ORDER BY try_num
limit 500
</select>

假如您在 XML 文档中放置了一个类似 "<" 字符，那么这个文档会产生一个错误，在 XML 中有 5 个预定义的实体引用：

<<小于>>大于&&和号''省略号""引号

在 XML 元素中，"<" 和 "&" 是非法的。
"<" 会产生错误，因为解析器会把该字符解释为新元素的开始。
"&" 也会产生错误，因为解析器会把该字符解释为字符实体的开始。

关于 CDATA 部分的注释：
CDATA 部分不能包含字符串 "]]>"。也不允许嵌套的 CDATA 部分。
标记 CDATA 部分结尾的 "]]>" 不能包含空格或折行。

注: where 1=1 在特殊的环境会报错，如果我们有特殊需要的话不能写，

<insert id="itemPublish" parameterType="item" useGeneratedKeys="true" keyProperty="id"> 主键返回，

也有insert多条，返回insert条数的写法

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