Mysql - Update only 1 row from same records - mysql

Question

I need to update row which having same value in debit column & only row which having create_date ASC basically 2019-11-15
I am having transaction table with following data
table name - tbl_transactions
id client_id user_id debit add_date
1 9991101 1 7.69 2019-11-15
2 9991101 1 7.69 2019-11-30
3 9991101 2 28.9 2019-11-15
4 9991101 2 11.49 2019-11-30
Now i just want to UPDATE record which have same value in column "debit" & date "2019-11-15"
which means only id-1 will be get updated.
id client_id user_id debit add_date
1 999110100 1 7.69 2019-11-15
We can add additional 00 to client_id field, i have tried with below sql but seems its not working
UPDATE tbl_transactions
SET client_id=999110100
WHERE id IN (
SELECT *
FROM tbl_transactions
WHERE client_id=9991101
AND DATE(create_date)='2019-11-15'
GROUP BY user_id, debit HAVING COUNT(*) = 2 )
Thanks in advance.

Answer 1

From what I understood from your question, you can try a query like
UPDATE
`tbl_transactions`
SET
`COLUMN_NAME` = DESIRED_VALUE
WHERE
`debit` = 7.69
AND
`add_date` = '2019-11-15'
You just need to replace COLUMN_NAME in the above query with your desired column name and it's respective value ahead of it. Do let me know if that's what you're trying to achieve or something else.

Answer 2

Mysql cannot specify target table for update in FROM clause.
You need to use subquery select them in a temporary table and update it,
And you can use CONCAT to concat your client_id with 00,
According to your post, you need the same debit and order by created_date ASC,
however, mysql cannot just order a field in group, so you can do it like this:
UPDATE
`tbl_transactions`
SET
`client_id` = CONCAT(client_id, '00')
WHERE id IN (
SELECT id FROM (
SELECT t2.id, t2.user_id t2.created_date FROM
(
SELECT id, user_id, MIN(created_date) AS created_date
FROM tbl_transactions
WHERE client_id=9991101
GROUP BY user_id, debit
HAVING COUNT(*) >= 2
) AS t1
INNER JOIN tbl_transactions AS t2
ON t1.user_id = t2.user_id AND t1.debit = t2.debit AND t2.client_id = 9991101 AND t1.created_date = t2.created_date
GROUP BY t2.user_id
) AS temp_table
)