Question

Is there a change to simplify this database query (which must be run many times per request) maybe with an IN clause or something else?

SELECT `id`
FROM `tablename`
WHERE `columnname1` = "longer-value" OR
      `columnname2` = "longer-value" OR
      `columnname3` = "longer-value" OR
      `columnname4` = "longer-value" OR
      `columnname5` = "longer-value" OR
      `columnname6` = "longer-value" OR
      `columnname7` = "longer-value" OR
      `columnname8` = "longer-value" OR
      `columnname9` = "longer-value" OR
      `columnname10` = "longer-value"

Please note that this query checks for that value over 10 different columns.

Answer 1

I have actually done this before…

WHERE "longer-value" IN (`rowname1`, `rowname2`, ... , `rownameN`)