小编Ran*_*Joe的帖子

我有下表：

CREATE TABLE trans (
    id SERIAL PRIMARY KEY,
    trans_date date,
    trans_time time        
);

我想有以下观点

CREATE OR REPLACE VIEW daily_trans AS
SELECT trans_date,
    max(trans_time) as first, 
    min(trans_time) as last,
    calculate_status(min(trans_time), max(trans_time)) as status 
GROUP BY trans_date 

带有指定最大和最小 trans_time id 的列。

我怎么做？