在POSTGRESQL中DATE PBM

Question

SELECT SUM(salesamt) from t0006.retailsummary WHERE perioddate between '2012-11-2' and '2013-12-31';

它的作品，但我想（使用日期变量，我指定了startdate=2012-11-1）

SELECT SUM(salesamt) from t0006.retailsummary WHERE perioddate between startdate and enddate;

它不起作用

Answer 1

\set startdate '\'' 2012-11-02 '\''
\set enddate '\'' 2013-12-31 '\''
SELECT SUM(salesamt) from t0006.retailsummary WHERE perioddate between :startdate and :enddate;