MySQL Select If Table Exists

Question

I need to run a count query on a table but only if that table exists,

SELECT 
CASE WHEN (SELECT COUNT(*) FROM information_schema.TABLES WHERE TABLE_SCHEMA =          


        

Answer 1

You can try this :

       SET @val := CASE (SELECT COUNT(*) FROM information_schema.TABLES WHERE TABLE_SCHEMA = 'DATABASENAME' AND TABLE_NAME = 'testtable')
           WHEN 0 THEN 0
           ELSE (SELECT COUNT(*) FROM information_schema.TABLES WHERE TABLE_SCHEMA = 'DATABASENAME' AND TABLE_NAME = 'testtable')

END;
        SELECT @val;

It will return 0, if there is no such table and if such table exists , it will return the count, it may be better if you take it into function.