Confira aqui as listas com alguns Servidores SQL
MySQL
SELECT column FROM table
ORDER BY RAND()
LIMIT 1
ORDER BY RAND()
LIMIT 1
PostgreSQL
SELECT column FROM table
ORDER BY RANDOM()
LIMIT 1
ORDER BY RANDOM()
LIMIT 1
SQL Server
SELECT TOP 1 column FROM table
ORDER BY NEWID()
ORDER BY NEWID()
IBM DB2
SELECT column, RAND() as IDX
FROM table
ORDER BY IDX FETCH FIRST 1 ROWS ONLY
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
( SELECT column FROM table
ORDER BY dbms_random.value )
WHERE rownum = 1
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