haojing/classbean/weaver/conn/mybatis/mapper/WorkflowBaseMapper.xml

<?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">
<mapper namespace="weaver.conn.mybatis.mapper.WorkflowBaseMapper">

	<!-- databaseId与resultType使用说明 -->
	<!--可以通过在标签属性中使用databaseId标识数据库，也可以在语句中通过_databaseId区分 -->
	<!-- resultType需要写明javabean的全路径。如果想简写，需要在MyBatis.xml中配置typeAliases -->
	<!-- 与resultType中属性值的映射是忽略大小写与下划线的。 -->
	<select id="selectHrmAlbumSubcompanyVO" resultType="weaver.conn.mybatis.bean.HrmAlbumSubcompanyVO" databaseId="mysql">
			select

		<if test="_databaseId=='mysql'">
			1,
		</if>
			a.*,b.*,(convert(b.albumsize/(1000+0.0) , decimal(18,2))) as totalsize,
			(convert((b.albumSizeUsed/(1000+0.0)),decimal(18,2))) as usesize,
			(convert((b.albumSize-b.albumSizeUsed)/(1000+0.0),decimal(18,2))) as remainsize,
			(case b.albumSize when 0 then 0 else (convert((b.albumSizeUsed/(b.albumSize+0.0)*100),decimal(18,2))) end ) AS rate
		from HrmSubcompany a LEFT JOIN AlbumSubcompany b ON a.id=b.subcompanyId
		order by a.supsubcomid,a.id
	</select>
	<select id="selectHrmAlbumSubcompanyVO" resultType="weaver.conn.mybatis.bean.HrmAlbumSubcompanyVO" databaseId="oracle">
		select  a.*,b.*,
		round(b.albumsize/(1000+0.0),2) as totalsize,
		round(b.albumSizeUsed/(1000+0.0),2) as usesize,
		round((b.albumSize-b.albumSizeUsed)/(1000+0.0),2) as remainsize,
		(case b.albumSize when 0 then 0 else round((b.albumSizeUsed/(b.albumSize+0.0)*100),2) end ) AS rate
		from HrmSubcompany a LEFT JOIN AlbumSubcompany b ON a.id=b.subcompanyId
		order by a.supsubcomid,a.id
	</select>
	<select id="selectHrmAlbumSubcompanyVO" resultType="weaver.conn.mybatis.bean.HrmAlbumSubcompanyVO" databaseId="sqlserver">
		select a.*,b.*,(convert(decimal(18,2),b.albumsize/(1000+0.0))) as totalsize,
		(convert(decimal(18,2),(b.albumSizeUsed/(1000+0.0)))) as usesize,
		(convert(decimal(18,2),(b.albumSize-b.albumSizeUsed)/(1000+0.0))) as remainsize,
		(case b.albumSize when 0 then 0 else (convert(decimal(18,2),(b.albumSizeUsed/(b.albumSize+0.0)*100))) end ) AS rate
		from HrmSubcompany a LEFT JOIN AlbumSubcompany b ON a.id=b.subcompanyId
		order by a.supsubcomid,a.id
	</select>

	<!-- resultMap使用说明 -->
	<!-- resultMap与resultType不能同时使用 -->
	<!-- resultMap的优势在于，一次配置，随处调用 -->
	<!-- 如果要在其它Mapper中调用，调用处需要写resultMap的全路径 -->
	<!-- resultMap中也可以配置collection或更为复杂的bean的映射,有需要请查看MyBatis官方文档，这里不再展开 -->
	<resultMap id="blogResult" type="weaver.conn.mybatis.bean.Blog">
		<id property="id" column="id" />
		<result property="title" column="blog_title"/>
		<!-- 关联属性中实体类的写法 -->
		<association property="author" javaType="weaver.conn.mybatis.bean.Author">
			<id property="id" column="author_id"/>
			<result property="username" column="author_username"/>
			<result property="password" column="author_password"/>
			<result property="email" column="author_email"/>
			<result property="bio" column="author_bio"/>
		</association>
	</resultMap>

	<!-- #{}与${} -->
	<!-- mybatis会将#{}转为预处理语句，下面的where条件转换后形如 where id = ? -->
	<!-- 而${}则会直接拼进sql语句中，所以有sql注入风险，一般用于 order by ${columnName} ${columnAsc}以及 select * from ${tableName} 这样的地方-->
	<select id="selectBlog" resultMap="blogResult">
		select * from blog where id = #{id} order by ${orderColumn}
	</select>

	<!-- 传入单个参数时，不想使用Map或javabean，可以使用下面的写法 -->
	<select id="selectBlog2" resultMap="blogResult">
		select * from blog order by ${_parameter}
	</select>
	<!-- 传入数组时，可以使用下面的写法,按数组顺序确定参数位置 -->
	<select id="selectBlog3" resultMap="blogResult">
		select * from blog where id = #{_parameter[0]} order by ${_parameter[1]}
	</select>

	<!-- insert -->
	<!-- 多传参时，请传入map或javabean。Mybatis会根据Map的key或javaBean的prop来确定参数的key -->
	<insert id="insert">
		insert into workflow_base(id, workflow_name) values (#{id}, #{workflowName});
	</insert>
	<!-- 自增主键的insert -->
	<!-- 如此标识之后，插入完毕后会将自增主键中的值配置到传入参数的id属性中-->
	<insert id="insertAuthor" useGeneratedKeys="true" keyProperty="id">
		insert into Author (username,password,email,bio)
		values (#{username},#{password},#{email},#{bio})
	</insert>
	<!-- 调用sequence的insert -->
	<!-- 调用完毕后，也会获得自增的主键 -->
	<insert id="insertAuthor" databaseId="oracle">
		<selectKey keyProperty="id" resultType="int" order="BEFORE">
			select AuthorSeq.nextval from dual
		</selectKey>
		insert into Author
		(id, username, password, email,bio, favourite_section)
		values
		(#{id}, #{username}, #{password}, #{email}, #{bio}, #{favouriteSection,jdbcType=VARCHAR})
	</insert>
	<!-- foreach批量插入 -->
	<insert id="insertAuthor" databaseId="mysql" useGeneratedKeys="true" keyProperty="id">
		insert into Author (username, password, email, bio) values
		<foreach item="item" collection="list" separator=",">
			(#{item.username}, #{item.password}, #{item.email}, #{item.bio})
		</foreach>
	</insert>

	<!-- update与delete -->
	<update id="updateAuthor">
		update author set name = #{name} where id = #{id}
	</update>
	<delete id="deleteAuthor">
		delete from author where id = #{id}
	</delete>

	<!-- sql块-->
	<!-- sql块中也可以接受传参，不过这里不再展开了 -->
	<sql id="subQuery">
		select blog.id,blog.name,author.name authorName, author.sex from blog, author
		where blog.author = author.id
	</sql>
	<select id="selectBlogNumByAuthor">
		select authorName, count(1) num
		from (
			<include refid="subQuery"></include>
		) a group by authorName
	</select>
	<select id="selectBlogNumBySex">
		select sex, count(1) num
		from (
		<include refid="subQuery"></include>
		) a group by sex
	</select>
</mapper>