in below sql command i want to use DESC after WHEN 1 THEN i.id line. i want to if sortable field is 1 then order by must be have like this command,
ORDER BY i.id DESC
Mysql :
SELECT
SQL_CALC_FOUND_ROWS i.* ,
c.title AS category_name,
u.name,
u.family,
i.thumb_image,
CONCAT( u.name, ' ', u.family ) AS author,
tumbnail_image_width,
tumbnail_image_height
FROM contents i
JOIN categories c ON c.id = i.category
JOIN users u ON u.id = i.posted_by
JOIN settings s ON s.portal = i.portal
WHERE
i.portal = '{$portal_id}'
AND CASE WHEN post_type = 4
THEN date(NOW()) BETWEEN i.from_dateTime AND i.to_dateTime
ELSE post_type = 1
END
AND i.t_status = 1
ORDER BY
CASE (SELECT sortable FROM settings)
WHEN 1 THEN i.id
WHEN 2 THEN i.date_time
WHEN 3 THEN i.order_display
END
LIMIT {$portalSettings['display_post_count']};";
Possibly bring back the sort field in the SELECT and then sort by that named field:-
SELECT
SQL_CALC_FOUND_ROWS i.* ,
c.title AS category_name,
u.name,
u.family,
i.thumb_image,
CONCAT( u.name, ' ', u.family ) AS author,
tumbnail_image_width,
tumbnail_image_height,
CASE (s.sortable)
WHEN 1 THEN 100000000 - i.id
WHEN 2 THEN i.date_time
WHEN 3 THEN i.order_display
END AS SortField
FROM contents i
JOIN categories c ON c.id = i.category
JOIN users u ON u.id = i.posted_by
JOIN settings s ON s.portal = i.portal
WHERE
i.portal = '{$portal_id}'
AND CASE WHEN post_type = 4
THEN date(NOW()) BETWEEN i.from_dateTime AND i.to_dateTime
ELSE post_type = 1
END
AND i.t_status = 1
ORDER BY SortField
LIMIT {$portalSettings['display_post_count']};";
Note that you might have to cast the fields to a data type to do this.
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