映射插入语句 insert
<insert id="insert" parameterType="com.study.mybatis.entity.Country">
<selectKey keyProperty="id" order="AFTER" resultType="java.lang.Integer">
SELECT LAST_INSERT_ID()
</selectKey>
insert into country (`NAME`, CODE)
values (#{name,jdbcType=VARCHAR}, #{code,jdbcType=VARCHAR})
</insert>返回自增后的主键值
批量新增回写主键值
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