SELECT SUM(islike) FROM dubsupport WHERE voiceid = #{voiceid} SELECT voiceid,uid,islike FROM DubSupport WHERE voiceid = #{voiceid} AND uid = #{uid} Update DubSupport islike = #{islike} WHERE voiceid = #{voiceid} AND uid = #{uid} INSERT INTO DubSupport(voiceid,uid,islike) VALUES (#{voiceid},#{uid},#{islike})