Получить случайные значения в различных базах данных

MySQL:
SELECT column FROM table
ORDER BY RAND()
LIMIT 1

PostgreSQL:
SELECT column FROM table
ORDER BY RANDOM()
LIMIT 1

Microsoft SQL Server:
SELECT TOP 1 column FROM table
ORDER BY NEWID()

IBM DB2:
SELECT column, RAND() as IDX 
FROM table 
ORDER BY IDX FETCH FIRST 1 ROWS ONLY

Oracle:
SELECT column FROM
( SELECT column FROM table
ORDER BY dbms_random.value )
WHERE rownum = 1