Limit result to random

Question

I use the query

SELECT * FROM mpbbolao WHERE eTIME1>=2 LIMIT 1

for example. To receive a query result I use LIMIT 1. Is there any way I can randomize what that "1" result will be?

Answer 1

You can use a random ordering, so you will have your first result also random.

Mysql

SELECT column FROM table
ORDER BY RAND()
LIMIT 1

Mysql Reference Manual: Mathematical Functions (RAND())

Postgresql

SELECT column FROM table
ORDER BY RANDOM()
LIMIT 1

Postgresql Documentation: Mathematical Functions and Operators

Microsoft SQL Server

SELECT TOP 1 column FROM table
ORDER BY NEWID()

Microsoft Docs: NEWID() (Transact-SQL)

IBM DB2

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

IBM Knowledge Center: RAND

Oracle

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

Oracle Docs: DBMS_RANDOM

^{The code has been removed of this response in the OS.}

Answer 2

Hello, I managed to solve, follow the solution:

SELECT * FROM mpbbolao WHERE eTIME1>=2 order by rand() LIMIT 1

"order by Rand()" makes the order random, so the first result will also be.