I had an error in mysql as picture. please help me
sql code is following:
UPDATE
tbl_users AS Users
SET
Users.money_current = Users.money_current +
CASE
WHEN TempTbl.money_info IS NULL
THEN 0
ELSE TempTbl.money_info
END
LEFT JOIN
(SELECT
userId,
SUM(bet_money * bet_rate) AS money_info
FROM
tbl_betting
WHERE ROUND = 'xxx'
AND is_win = 1
GROUP BY userId) AS TempTbl
ON Users.userId = TempTbl.userId
FROM tbl_users AS Users;
This is the correct syntax:
UPDATE tbl_users AS Users
LEFT JOIN (
SELECT userId, SUM(bet_money * bet_rate) AS money_info
FROM tbl_betting WHERE ROUND = '965802' AND is_win = 1
GROUP BY userId
) AS TempTbl ON Users.userId = TempTbl.userId
SET Users.money_current = Users.money_current + COALESCE(TempTbl.money_info, 0)
I also changed that CASE
expression with COALESCE()
.
But I think an INNER JOIN
would also work in your case, since the unmatched rows of the LEFT JOIN
that you use do not change the value of money_current
.
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