select part_dt,store_id,business_volume ,valid_order,unit_pricefrom ads_mkt_platform_store_day where 1=1 ${IF(frequency="1","AND part_dt >= '"+startDate+"' AND part_dt< '"+endDate+"'" ,IF(frequency="2","AND part_dt >= '"+startDate+"' AND part_dt< '"+endDate+"'",IF(frequency="3","AND part_dt >= '"+startDate+"' AND part_dt< '"+endDate+"'","AND part_dt >= '"+startDate+"' AND part_dt< '"+endDate+"'")))}and store_id in ( '${store_id}')数据库是mysql,part_dt是日分区,存放的格式20010203的字符串,startDate,endDate是传参,想通过date_format()函数转换日期格式报错,哪位大佬指教一下,怎么转日期格式,还有就是取到昨天,去年同一天的日期?,if 条件中frequency 表示取 日 周 三个时间维度,查看数据select part_dt,store_id,business_volume ,valid_order,unit_pricefrom ads_mkt_platform_store_day where 1=1 ${IF(frequency="1","AND part_dt >= '"+date_format(startDate,'%Y%m%d')+"' AND part_dt< '"+date_format(endDate,'%Y%m%d')+"'" ,IF(frequency="2","AND part_dt >= '"+date_format(startDate,'%Y%m%d')+"' AND part_dt< '"+date_format(endDate,'%Y%m%d')+"'",IF(frequency="3","AND part_dt >= '"+date_format(startDate,'%Y%m%d')+"' AND part_dt< '"+date_format(endDate,'%Y%m%d')+"'","AND part_dt >= '"+date_format(startDate,'%Y%m%d')+"' AND part_dt< '"+date_format(endDate,'%Y%m%d')+"'")))}and store_id in ( '${store_id}')