声明变量 在sql标签中使用变量
<sql id="column_id">ID, STATE, CREATE_TIME, UPDATE_TIME, SPIDER, VERSION, COMPLETED_AT, QUANTITY<if test="role == '1'">,123 as role</if><if test="role == '2'">,456 as role</if></sql><select id="selectTest" resultType="com.test.entity.SpiderTaskEntity"><if test="type == '0'.toString()"><bind name="role" value="'1'"/>select<include refid="column_id"/>from spider_task stwhere st.state = 'OK'and st.SPIDER = 'amac-pof-pe-issue'</if><if test="type == '0'.toString()">union<bind name="role" value="'2'"/>select<include refid="column_id"/>from spider_task stwhere st.state = 'OK'and st.SPIDER = 'amac-pof-off'</if></select>
