PosgreSQL：如何在查詢中定義PARAMETER？

Question

在MSSQL中，我通常使用下面的參數是這樣的：

declare @StartDate as date, @EndDate as date 
set @StartDate = '08/01/2015' set @EndDate = '08/15/2015' 

----------- and use it here as my Date Range of Records: 

Select * from Table_Name 
where DateRange between @StartDate and @EndDate 

我怎樣才能生成報表/記錄這樣做是PostgreSQL的？

Answer 1

參考官方文檔：

http://www.postgresql.org/docs/9.1/interactive/plpgsql-structure.html http://www.postgresql.org/docs/9.1/static/plpgsql-declarations.html

Answer 2

做這樣 $體內後$

DECLARE startdate date; 
DECLARE enddate date; 

開始後

startdate ='2015-08-01'; 
Enddate ='2015-08-15'; 

retrun query 

select * from Table where daterange between startdate and endate