无法在交叉表函数 postgres 中传递参数

Question

我知道我必须将文本传递给 postgres 中的交叉表函数。 但不知何故，我无法做到这一点。 我不确定我做错了什么，请帮助。 这是我要创建的功能

    create or replace function hrms.test2(startdate date)
returns table(
employeeid int,
col1 int,
col2 INT,
col3 int,
col4 int) as
$body$
SELECT * FROM hrms.crosstab(
  $firstquery$ 
  SELECT tms.employeeid,tms.today,count(tms.employeeid) as countid 
  FROM hrms.timesheet as tms
  where dated>=|| quote_literal(startdate) ||
  and dated < ||+ quote_literal(startdate)||::timestamp + '1 MONTH'::INTERVAL
  group by tms.employeeid,tms.today $firstquery$,
  $secquery$ select distinct tms.today 
  from hrms.timesheet as tms$secquery$
)as
finalresult(employeeid int,leave int,present int,absent int, holiday int)
$body$ 
LANGUAGE SQL;

它运行成功但是当我使用日期运行它时

select * from hrms.test2('2017-09-01')

我收到一条错误消息说

column startdate doesn't exist

我也尝试了更多替代方案。 我不确定我做错了什么请帮忙。

Answer 1

你忘了用引用$firstquery$来包装变量，从你的代码中我假设你想要像这样的东西：

create or replace function hrms.test2(startdate date)
returns table(
employeeid int,
col1 int,
col2 INT,
col3 int,
col4 int) as
$body$
SELECT * FROM hrms.crosstab(
  $firstquery$ 
  SELECT tms.employeeid,tms.today,count(tms.employeeid) as countid 
  FROM hrms.timesheet as tms
  where dated>=$firstquery$|| quote_literal(startdate) ||$firstquery$
  and dated < $firstquery$||+ quote_literal(startdate)||$firstquery$::timestamp + '1 MONTH'::INTERVAL
  group by tms.employeeid,tms.today $firstquery$,
  $secquery$ select distinct tms.today 
  from hrms.timesheet as tms$secquery$
)as
finalresult(employeeid int,leave int,present int,absent int, holiday int)
$body$ 
LANGUAGE SQL;

Answer 2

您基本上可以使用 $$ 而不是 $firstquery$ 或 $secondquery$。

我没有代表发表评论，所以我留下了回复。