hi， 在flink中使用hql函数的时候 dayofweek 报错，编译都没有通过。我的使用方式 用yyyy-MM-dd也是一样的错误。哪位大神遇到过！ DAYOFWEEK(to_date(from_unixtime (unix_timestamp(cast(dt as string),'yyyyMMdd'),'yyyy-MM-dd HH:mm:ss')))
，Cannot apply 'EXTRACT' to arguments of type 'EXTRACT(<INTERVAL DOW> FROM <VARCHAR(2147483647)>)'. Supported form(s): 'EXTRACT(<DATETIME_INTERVAL> FROM <DATETIME_INTERVAL>)' 10-04-2020 16:26:14 CST user_visit_terminal_prefer_7d INFO - 'EXTRACT(<DATETIME_INTERVAL> FROM <DATETIME>)' 10-04-2020 16:26:14 CST user_visit_terminal_prefer_7d INFO - at org.apache.flink.table.planner.calcite.FlinkPlannerImpl.org$apache$flink$table$planner$calcite$FlinkPlannerImpl$$validate(FlinkPlannerImpl.scala:130) 10-04-2020 16:26:14 CST user_visit_terminal_prefer_7d INFO - at org.apache.flink.table.planner.calcite.FlinkPlannerImpl.validate(FlinkPlannerImpl.scala:105)
