How to fix join error in mysql update query - mysql

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.

Related

MySQL Multiple INNER JOIN + GROUP BY not working as expected

I am generating a Member Leaderboard based on some field values.. Using Below SQL i am getting those values...
SELECT ue1.user_id,
ue1.meta_value coins ,
ue3.meta_value user_rank ,
ue2.meta_value gems,
COUNT(ue4.user_id) quiz_count,
COUNT(ue5.user_id) video_watch_count,
ue1.meta_value + ue3.meta_value + ue2.meta_value total_points
FROM `wp_usermeta` as ue1
INNER JOIN `wp_usermeta` as ue2 ON ue2.user_id = ue1.user_id
AND ue1.meta_key = '_coin_points'
AND ue2.meta_key = '_gem_points'
INNER JOIN `wp_usermeta` as ue3 ON ue3.user_id = ue1.user_id
AND ue3.meta_key = '_user_rank'
INNER JOIN `wp_gamipress_user_earnings` as ue4 ON ue4.user_id = ue1.user_id
AND ue4.post_type = 'quiz-game-master'
INNER JOIN `wp_gamipress_user_earnings` as ue5 ON ue5.user_id = ue1.user_id
AND ue5.post_type = 'video-game-master'
WHERE ue1.meta_value > 0
AND ue2.meta_value > 0
GROUP BY ue1.user_id, ue1.meta_value, ue2.meta_value, ue3.meta_value, ue4.user_id, ue5.user_id
ORDER BY total_points DESC LIMIT 0, 50
What i am getting is... Not Expected Query Result
See? video_watch_count is copying quiz_count value.. I don't know why? Would appreciate if you could help me out here.
Check you join statement. For both quiz_count, video_watch_count, you select data from table wp_gamipress_user_earnings. For each entry if join condition satisfied it will return user_id from corresponding table.
Finally you group it using user_id which is common to both join results.That's why you get same count.

Duplicate column on join

I'm trying to join three tables, after filtering one down to the most recent entry per user. However, all of a sudden I'm running into the error Duplicate column name 'username'. I need to join on this "duplicate" column. How do I fix this?
SELECT customers.id,customers.name,customers.username,customers.phone,customers.email,radcheck.value as password
FROM customers
RIGHT JOIN radcheck ON customers.username = radcheck.username
LEFT JOIN (
SELECT * FROM radacct INNER JOIN (
SELECT username,MAX(acctupdatetime) AS latest FROM radacct GROUP BY username
) as radrecent
ON radacct.username = radrecent.username
AND radacct.acctupdatetime = radrecent.latest
) as radlatest
ON customers.username = radlatest.username
WHERE radcheck.attribute = 'Cleartext-Password'
In the * you have two columns that are username. You need to qualify one or both of them. Example below:
SELECT
customers.id,customers.name,customers.username,customers.phone,customers.email,radcheck.value as password
FROM customers
RIGHT JOIN radcheck ON customers.username = radcheck.username
LEFT JOIN (
SELECT radrecent.username, latest FROM radacct INNER JOIN (
--^^^^^^^^^
SELECT username,MAX(acctupdatetime) AS latest FROM radacct GROUP BY username
) as radrecent
ON radacct.username = radrecent.username
AND radacct.acctupdatetime = radrecent.latest
) as radlatest
ON customers.username = radlatest.username
WHERE radcheck.attribute = 'Cleartext-Password'

MySQL error: duplicate column

I'm having a bit of a problem with the following MySQL query and I can't find the source of it.
MySQL tells me that
SQLSTATE[42S21]: Column already exists: 1060 Duplicate column name
'annonce_dispo_id'
SELECT MAX(max_price) AS `max_price`,
COUNT(*) AS `nb_annonces`,
SUM(nb_dispo) AS `nb_dispo`
FROM
(SELECT `annonce`.`id`,
CEIL(MAX(price)*1.16) AS `max_price`,
COUNT(DISTINCT annonce.id) AS `nb_annonces`,
COUNT(annonce_dispoo.annonce_dispo_id) AS `nb_dispo`,
`annonce_dispo1`.*,
`annonce_dispo2`.*
FROM `annonce`
LEFT JOIN `annonce_dispo` AS `annonce_dispoo` ON (annonce_dispoo.annonceId = annonce.id
AND STR_TO_DATE(annonce_dispoo.dispo_date, '%d/%m/%Y') >= CURDATE())
INNER JOIN `annonce_dispo` AS `annonce_dispo1` ON annonce.id = annonce_dispo1.annonceId
INNER JOIN `annonce_dispo` AS `annonce_dispo2` ON annonce.id = annonce_dispo2.annonceId
WHERE ((annonce.city IN
(SELECT `cities`.`id`
FROM `cities`
WHERE (cities.label LIKE 'lyon%'))
OR annonce.zipcode = 'lyon')
OR (annonce.city LIKE '28674'
OR annonce.zipcode = '28674'))
AND (annonce_dispo1.dispo_date = '27/05/2014')
AND (annonce_dispo1.disponibility = 'available')
AND (annonce_dispo2.dispo_date = '31/05/2014')
AND (annonce_dispo2.disponibility = 'available')
AND (annonce.visible = 1)
AND (annonce.completed = 1)
GROUP BY `annonce`.`id` HAVING (nb_dispo >= 1)) AS `t`
I thought gave a different alias for the table in each JOIN I use them in, and can't really put my finger on what else is possible to output such an error.
Don't select annonce_dispo1.* and annonce_dispo2.* in your subquery, duplicated column names are being returned. Instead select the fields you need and alias accordingly.
SELECT MAX(max_price) AS `max_price`,
COUNT(*) AS `nb_annonces`,
SUM(nb_dispo) AS `nb_dispo`
FROM
(SELECT `annonce`.`id`,
CEIL(MAX(price)*1.16) AS `max_price`,
COUNT(DISTINCT annonce.id) AS `nb_annonces`,
COUNT(annonce_dispoo.annonce_dispo_id) AS `nb_dispo`,
`annonce_dispo1`.field, `annonce_dispo1`.otherfield,
`annonce_dispo1`.field as field2, `annonce_dispo1`.otherfield as otherfield2
FROM `annonce`
LEFT JOIN `annonce_dispo` AS `annonce_dispoo` ON (annonce_dispoo.annonceId = annonce.id
AND STR_TO_DATE(annonce_dispoo.dispo_date, '%d/%m/%Y') >= CURDATE())
INNER JOIN `annonce_dispo` AS `annonce_dispo1` ON annonce.id = annonce_dispo1.annonceId
INNER JOIN `annonce_dispo` AS `annonce_dispo2` ON annonce.id = annonce_dispo2.annonceId
WHERE ((annonce.city IN
(SELECT `cities`.`id`
FROM `cities`
WHERE (cities.label LIKE 'lyon%'))
OR annonce.zipcode = 'lyon')
OR (annonce.city LIKE '28674'
OR annonce.zipcode = '28674'))
AND (annonce_dispo1.dispo_date = '27/05/2014')
AND (annonce_dispo1.disponibility = 'available')
AND (annonce_dispo2.dispo_date = '31/05/2014')
AND (annonce_dispo2.disponibility = 'available')
AND (annonce.visible = 1)
AND (annonce.completed = 1)
GROUP BY `annonce`.`id` HAVING (nb_dispo >= 1)) AS `t`
See here for an example that doesn't work:
http://sqlfiddle.com/#!2/9bb13/1
The problem is that you are selecting all columns in the tables annonce_dispo1 and annonce_dispo2.
The fact that you have attributed different table names doesn't mean that there aren't duplicate column names.
I mean, you should use [Table name].[column name]
Example:
(SELECT `annonce`.`id`,
CEIL(MAX(price)*1.16) AS `max_price`,
COUNT(DISTINCT annonce.id) AS `nb_annonces`,
COUNT(annonce_dispoo.annonce_dispo_id) AS `nb_dispo`,
`annonce_dispo1`.annonce_dispo_id AS `column1`,
`annonce_dispo2`.annonce_dispo_id AS `column2`
I hope I've helped

Every derived table must have its own alias

I have the following query:
SELECT `snap`.`ID`, `user`.`username`, `vote`.`type`
FROM (`snap`) JOIN `user` as u ON `u`.`ID` = `snap`.`user`
LEFT JOIN (select * from vote where user = "18") as vote ON `snap`.`ID` = `vote`.`snap`
JOIN (SELECT CEIL(MAX(ID)*RAND()) AS ID FROM snap)) AS x ON `snap`.`ID` => `x`.`ID`
WHERE `snap`.`active` = 0 LIMIT 1
It worked just fine untill I added the last JOIN. Now i get the error: "Every derived table must have its own alias". I know it is because every table needs its on alias and I need to put "as S" or something somewhere, but I can't find out how to do that in this query.
Seems like you have extra closing parenthesis after snap. It should be 1 instead of 2 closing parentheses.
SELECT `snap`.`ID`, `user`.`username`, `vote`.`type`
FROM (`snap`) JOIN `user` as u ON `u`.`ID` = `snap`.`user`
LEFT JOIN (select * from vote where user = "18") as vote ON `snap`.`ID` = `vote`.`snap`
JOIN (SELECT CEIL(MAX(ID)*RAND()) AS ID FROM snap) AS x ON `snap`.`ID` = `x`.`ID`
WHERE `snap`.`active` = 0 LIMIT 1
Correct syntax is :
SELECT `snap`.`ID`, `user`.`username`, `vote`.`type`
FROM (`snap`) JOIN `user` as u ON `u`.`ID` = `snap`.`user`
LEFT JOIN (select * from vote where user = "18") as vote ON `snap`.`ID` = `vote`.`snap`
JOIN (SELECT CEIL(MAX(ID)*RAND()) AS ID FROM snap) AS x ON `snap`.`ID` = `x`.`ID`
WHERE `snap`.`active` = 0 LIMIT 1

Updating users table from complex SQL query, users.id not recognised?

So the other day, I asked this question about how to combine three complex queries and found a way to do it. Now I'm trying to use those queries to update a field in the users table and can't find a way to make it work. Here's the query:
update users set field_sum =(
select sum(field_sum) from (
select sum(field_one) as field_sum
from t_a join t_b on (t_a.bid = t_b.id) where t_b.user_id=users.id
union all
select sum(field_two) as field_sum
from t_c join t_d on (t_c.did = t_d.id) where t_d.user_id=users.id
union all
select sum(field_three) as field_sum
from t_e where t_e.user_id=users.id
) as field_sumT
)
When I try to run it, I get the following error: ERROR 1054 (42S22): Unknown column 'users.id' in 'where clause'. When I try removing the .user_id=users.id bit from each where clause, it will run but ends up with the total sum of field_sum, not just the field_sum for that user. Is there any way to accomplish this?
Use:
UPDATE USERS u
LEFT JOIN (SELECT t_b.user_id,
SUM(field_one) as field_sum
FROM t_a
JOIN t_b on t_a.bid = t_b.id
GROUP BY t_b.user_id) a ON a.user_id = u.id
LEFT JOIN (SELECT t_d.user_id,
SUM(field_two) as field_sum
FROM t_c
JOIN t_d on t_c.did = t_d.id
GROUP BY t_d.user_id) b ON b.user_id = u.id
LEFT JOIN (SELECT t_e.user_id,
SUM(field_three) as field_sum
from t_e
GROUP BY t_e.user_id) c ON c.user_id = u.id
SET field_num = COALESCE(a.field_sum, 0) + COALESCE(b.field_sum, 0) + COALESCE(c.field_sum, 0)
Caveat
This will set any users with no records in the supporting rows to have a field_sum value of zero. Do you only want to update those with a record in at least one of those tables?