OpenQuery将yyyymmdd转换为MM / DD / YYYY

Question

我尝试过

FROM OPENQUERY(TESTsvr, 
Select to_date(CREATE_DT, "MM/DD/YYYY") as Testing
From Test.ViewTest

和

FROM OPENQUERY(TESTsvr, 
to_char(CREATE_DT, "mm/dd/yyyy hh24:mi:ss") as Testing
From Test.ViewTest

但是当我执行它时，它说出无效的标识符。

Answer 1

尝试使用引号： 如果要将日期转换为char：

  FROM OPENQUERY(TESTsvr, 
'select to_char(CREATE_DT, ''mm/dd/yyyy hh24:mi:ss'') as Testing From Test.ViewTest')

如果要将char转换为日期：

  FROM OPENQUERY(TESTsvr, 
'select to_date(CREATE_DT, ''mm/dd/yyyy'') as Testing From Test.ViewTest')

如果要将NUMBER（8）转换为日期（如yyyymmdd）：

  FROM OPENQUERY(TESTsvr, 
'select to_date(CREATE_DT, ''yyyymmdd'') as Testing From Test.ViewTest')