Select * from database table for the last 30 days doesnt return all elements

Question

For Android, the date is saved like this Fri Apr 12 10:16:01 EDT 2019 and on iOs, its saved like this 2019-10-16 00:27:12 0000 .

The problem is, when I query the DB

SELECT *
FROM appsearch
WHERE username = '$userID' and
       date >= CURRENT_DATE - INTERVAL 200 DAY
ORDER BY date DESC

It wont pick up the items from the Android search, only IOS. How can I pull both? I know fixing the API would be best, but im past that.

Answer 1

Since your Android dates are not in a form which can be compared to a MySQL DATE, you must convert them first. You can use STR_TO_DATE for this, using LEFT and RIGHT to cut out the day, month and year parts of the string:

SELECT *
FROM appsearch
WHERE username = 1 AND
      (DATE(date) >= CURRENT_DATE - INTERVAL 200 DAY OR
       STR_TO_DATE(CONCAT(LEFT(date, 10), RIGHT(date, 4)), '%a %b %e %Y') >= CURRENT_DATE - INTERVAL 200 DAY
       )
ORDER BY COALESCE(DATE(date), STR_TO_DATE(CONCAT(LEFT(date, 10), RIGHT(date, 4)), '%a %b %e %Y')) DESC

Demo on dbfiddle

Note

1. We cut out the middle part of the time string since I presume the timezone is not constant, and STR_TO_DATE requires that literal characters in the format string match exactly, so you would otherwise require multiple different format strings (eg for EDT , PST , etc.) to convert all of them.
2. You need to change the ORDER BY clause to use the date value that was being used in the WHERE clause.