DolphinDB不支持全局变量,colNames应该作为参数传入。
执行下列代码报错:
colNames = ["open_time", "open", "high", " ow", "close", "volume",“interval","quote_volume'count""taker_buy_volume""taker_buy_quote_volume","code"] def transType(code, interval, mutable memTB){ memTB.rename!(concat('' + colNames )) print(memTB.columnNames( )) }