PostgreSQL Time Dimension (By Hours and Days) Error

Question

I am am building a Time Dimension table in PostgreSQL with DATE_ID and DATE_DESC. My T-SQL (works perfectly) script is:

set DATEFIRST 1
 ;WITH DATES AS (
    SELECT CAST('2019-01-01 00:00:00.000' AS datetime) AS [DATE]
    UNION ALL
    SELECT DATEADD(HH,1,[DATE])
    FROM DATES
    WHERE DATEADD(HH,1,[DATE]) <= CAST('2019-12-31' AS datetime)
)
SELECT
DATE_ID, DATE_DESC
from
(
SELECT  
CONVERT(int, CONVERT(char(8), DATE, 112)) AS DATE_ID,
DATE AS DATE_DESC
FROM
    DATES)a
order by 1
OPTION (MAXRECURSION 0)

At the moment Im trying to convert this code to PostgreSQL readable one and it does not work.. Here is mine at the moment:

set EXTRACT(DOW FROM TIMESTAMP  '2019-01-01 00:00:00.000')+1
;WITH DATES AS (
    SELECT CAST('2019-01-01 00:00:00.000' AS timestamp) AS DATE
    UNION ALL
    SELECT CURRENT_DATE + INTERVAL '1 hour'
    FROM DATES
    WHERE CURRENT_DATE + INTERVAL '1 hour' <= CAST('2019-12-31' AS timestamp)
)

SELECT DATE_ID, DATE_DESC from
(SELECT  cast(to_char((DATE)::TIMESTAMP,'yyyymmddhhmiss') as BIGInt) AS DATE_ID,
DATE AS DATE_DESC
FROM
    DATES)a
order by 1
OPTION (MAXRECURSION 0)

I need all the hours (24h) between 2019-01-01 and 2019-12-31 . At the moment I think OPTION (MAXRECURSION 0) and set EXTRACT(DOW FROM TIMESTAMP '2019-01-01 00:00:00.000')+1 is not working properly.

Answer 1

Its a problem of Recursive CTE, In Postgresql, your desired query will be like below

WITH recursive DATES AS (
    SELECT CAST('2019-01-01 00:00:00.000' AS timestamp) AS date_
    UNION ALL
    SELECT date_ + INTERVAL '1 hour'
    FROM DATES
    WHERE date_ + INTERVAL '1 hour' <= CAST('2019-12-31' AS timestamp)
)

SELECT DATE_ID, DATE_DESC from
(SELECT  cast(to_char((date_)::TIMESTAMP,'yyyymmddhhmiss') as BIGInt) AS DATE_ID,
date_ AS DATE_DESC
FROM
    DATES)a
order by 1

DEMO