在dblink上傳遞日期參數Postgres

Question

如何在postgrees上將日期參數傳遞給dblink？

SELECT * FROM dblink 
    (
     'my connection' 
     , 
    'SELECT s.dtcreated FROM realvida.tbstudente s ' || 
    ' WHERE s.dtcreated' = $1 -- my parameter pass '02-01-2017' 

    ) as result2(dtcreated date) 

這樣，它返回我一個錯誤：運營商不存在：日期=整數 感謝。

Answer 1

變化'SELECT s.dtcreated FROM realvida.tbstudente s ' || ' WHERE s.dtcreated' = $1

到

format('SELECT s.dtcreated FROM realvida.tbstudente s WHERE s.dtcreated = %L',$1)