PostgreSQL：如何在查询中定义PARAMETER？

Question

在MSSQL中，我通常使用以下参数：

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 

如何在PostgreSQL中执行此操作以生成报告/记录？

Answer 1

参考官方文件：

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

Answer 2

这样做 在$ BODY $

之后

DECLARE startdate date;
DECLARE enddate date;

开始后

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

retrun query 

select * from Table where daterange between startdate and endate