标签：insert rup tty == test class before count mybatis
例子
<insert id="saveOrUpdate" > <selectKey keyProperty="count" resultType="int" order="BEFORE"> select count(*) from country where id = #{id} </selectKey> <if test="count > 0"> update country set countryname = #{countryname},countrycode = #{countrycode} where id = #{id} </if> <if test="count==0"> insert into country values(#{id},#{countryname},#{countrycode}) </if> </insert>
csdn上的代码，唯一必须注意的是 keyProperty="count" ，要在实体类dto里面有
<selectKey keyProperty="count" resultType="int" order="BEFORE"> select count(*) from country where id = #{id} </selectKey>
标签：insert rup tty == test class before count mybatis
原文地址：https://www.cnblogs.com/ydymz/p/10115462.html
