Hader at sige dette, men MySQL er den eneste RDBMS af de fire store, der ikke har denne funktion.
I Oracle :
SELECT *
FROM dual
CONNECT BY
level < n
I MS SQL (op til 100 rækker):
WITH hier(row) AS
(
SELECT 1
UNION ALL
SELECT row + 1
FROM hier
WHERE row < n
)
SELECT *
FROM hier
eller ved at bruge tip op til 32768
WITH hier(row) AS
(
SELECT 1
UNION ALL
SELECT row + 1
FROM hier
WHERE row < 32768
)
SELECT *
FROM hier
OPTION (MAXRECURSION 32767) -- 32767 is the maximum value of the hint
I PostgreSQL :
SELECT *
FROM generate_series (1, n)
I MySQL , intet.