PostgreSQL。不能使用绑定参数定义物化视图

Question

我正在尝试在具有日期的存储函数中创建物化视图范围作为入站参数。

    CREATE OR REPLACE FUNCTION public.create_view_for_reporting(
prev_date timestamp without time zone,
curr_date timestamp without time zone)
RETURNS void AS
$BODY$
BEGIN
    DROP MATERIALIZED VIEW public.messages_prev_day;    
    CREATE MATERIALIZED VIEW public.messages_prev_day AS 
    SELECT * FROM messages
    WHERE messages.date >= prev_date AND messages.date < curr_date
    WITH NO DATA;
END;
$BODY$
LANGUAGE plpgsql VOLATILE
COST 100;

函数创建没有问题，但当我运行它时：

select * from public.create_view_for_reporting ('2017-05-08','2017-05-09')

它因错误而失败

ERROR: materialized views may not be defined using bound parameters

所以，我想知道是否有任何可能的变体来创建带参数的实体化视图？

Answer 1

试试看？:

    CREATE OR REPLACE FUNCTION public.create_view_for_reporting(
prev_date timestamp without time zone,
curr_date timestamp without time zone)
RETURNS void AS
$BODY$
BEGIN
    DROP MATERIALIZED VIEW public.messages_prev_day;    
    execute format('CREATE MATERIALIZED VIEW public.messages_prev_day AS 
    SELECT * FROM messages
    WHERE messages.date >= %L AND messages.date < %L
    WITH NO DATA',prev_date,curr_date);
END;
$BODY$
LANGUAGE plpgsql VOLATILE
COST 100;

PostgreSQL。不能使用绑定参数定义物化视图

PostgreSQL. Materialized views may not be defined using bound parameters

sql

postgresql

plpgsql