Expression columns do not work in where clause

[sukhwinder33445]

If a column has expression as value, the column does not exist in where clause.

Example:

Table news has a expression column sent. Filter creates the following query:

SELECT news.id,
       news.title,
       news.sent_on,
       (CASE WHEN news.sent_on IS NOT NULL THEN 1 ELSE 0 END) AS sent,
FROM news
WHERE news.sent = 1 // column sent does not exist here
ORDER BY news.sent_on DESC;

Additional:

Have a look at this Stack Overflow example

[nilmerg]

@sukhwinder33445 @yhabteab Please check if the linked PR works for you.