Question

I am trying to use todays date with cur_date() and trying to pull all the columns where it is between a datestart column and a dateend column.

I have tried both the below queries but get: Unknown column ‘tdate’ in ‘where clause’

SELECT id, 
       details, 
       CURDATE() AS tdate 
FROM specials 
WHERE tdate BETWEEN datestart AND dateend;

SELECT id, 
       details, 
       CURDATE() AS tdate 
FROM specials WHERE datestart <= tdate AND dateend >= tdate;

Answer 1

This field alias is not seen in WHERE clause, try this query instead –

SELECT
  id, details, CURDATE() AS tdate FROM specials
WHERE
  datestart <= CURDATE() AND dateend >= CURDATE();

Or use a subquery –

SELECT id, details, tdate FROM (
  SELECT id, details, CURDATE() AS tdate FROM specials
    ) t
WHERE
  datestart <= tdate AND dateend >= tdate;