I've been struggling all day with a really simple case statement in SQL...
I have this piece of code:
UPDATE `alugueis`
SET `status` = CASE
WHEN `pago_em` is null THEN 'Atrasado'
WHEN `pago_em` is '' THEN 'Atrasado'
ELSE `status`
END
WHERE `vencimento` <= CURDATE()
and the error I get is: [1064][42000]: (conn:235) You have an error in your SQL syntax; check the manual .......
I don`t think I am mixing up the two forms of CASE, or am I?
Thank you so much!
I think you intend:
UPDATE alugueis
SET status = (CASE WHEN pago_em is null THEN 'Atrasado'
WHEN pago_em = '' THEN 'Atrasado'
ELSE status
END)
WHERE vencimento <= CURDATE();
The problem is the is ''
.
This would more normally be written without the CASE
:
UPDATE alugueis
SET status = 'Atrasado'
WHERE vencimento <= CURDATE() AND
(pago_em IS NULL OR pago_em = '')
You cannot use IS ''
UPDATE `alugueis`
SET `status` = CASE
WHEN `pago_em` is null THEN 'Atrasado'
WHEN `pago_em` = '' THEN 'Atrasado'
ELSE `status`
END
WHERE `vencimento` <= CURDATE()
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