MySQL updating table with values selected from same table in one go
I want to update quite a few values in a table. Said values already exist in another table.
I'm selecting said values using the following query:
SELECT c.last_purchase,
so.customer_id,
so.modified_at
FROM customer c
INNER JOIN sale_order so
ON c.customer_id = so.customer_id
AND c.country = so.country
WHERE so.created_at > c.last_purchase
So far so good. But my sql skills aren't too great(hey, I'm being honest here).
The correct values are so.modified_at. I want to update c.last_purchase to match so.modified_at.
Originally I was thinking of using a WHEN THEN combination. Or perhaps some sort of stored procedure.
I could this by using a bash script or any other programming language that knows how to connect to a database. But I'd like, if possible, to do this strictly using MySQL. If not possible I'll have to settle for a bash script(I already wrote one).
Honestly, I have no idea where to start.
Any pointing in the right direction is more than appreciated.
mysql
asked 9 secs ago
AndrewAndrew
1185
add a comment |
I want to update quite a few values in a table. Said values already exist in another table.
I'm selecting said values using the following query:
SELECT c.last_purchase,
so.customer_id,
so.modified_at
FROM customer c
INNER JOIN sale_order so
ON c.customer_id = so.customer_id
AND c.country = so.country
WHERE so.created_at > c.last_purchase
So far so good. But my sql skills aren't too great(hey, I'm being honest here).
The correct values are so.modified_at. I want to update c.last_purchase to match so.modified_at.
Originally I was thinking of using a WHEN THEN combination. Or perhaps some sort of stored procedure.
I could this by using a bash script or any other programming language that knows how to connect to a database. But I'd like, if possible, to do this strictly using MySQL. If not possible I'll have to settle for a bash script(I already wrote one).
Honestly, I have no idea where to start.
Any pointing in the right direction is more than appreciated.
mysql
asked 9 secs ago
AndrewAndrew
1185
add a comment |
I want to update quite a few values in a table. Said values already exist in another table.
I'm selecting said values using the following query:
SELECT c.last_purchase,
so.customer_id,
so.modified_at
FROM customer c
INNER JOIN sale_order so
ON c.customer_id = so.customer_id
AND c.country = so.country
WHERE so.created_at > c.last_purchase
So far so good. But my sql skills aren't too great(hey, I'm being honest here).
The correct values are so.modified_at. I want to update c.last_purchase to match so.modified_at.
Originally I was thinking of using a WHEN THEN combination. Or perhaps some sort of stored procedure.
I could this by using a bash script or any other programming language that knows how to connect to a database. But I'd like, if possible, to do this strictly using MySQL. If not possible I'll have to settle for a bash script(I already wrote one).
Honestly, I have no idea where to start.
Any pointing in the right direction is more than appreciated.
mysql
asked 9 secs ago
AndrewAndrew
1185
I want to update quite a few values in a table. Said values already exist in another table.
I'm selecting said values using the following query:
SELECT c.last_purchase,
so.customer_id,
so.modified_at
FROM customer c
INNER JOIN sale_order so
ON c.customer_id = so.customer_id
AND c.country = so.country
WHERE so.created_at > c.last_purchase
So far so good. But my sql skills aren't too great(hey, I'm being honest here).
The correct values are so.modified_at. I want to update c.last_purchase to match so.modified_at.
Originally I was thinking of using a WHEN THEN combination. Or perhaps some sort of stored procedure.
I could this by using a bash script or any other programming language that knows how to connect to a database. But I'd like, if possible, to do this strictly using MySQL. If not possible I'll have to settle for a bash script(I already wrote one).
Honestly, I have no idea where to start.
Any pointing in the right direction is more than appreciated.
mysql
mysql
asked 9 secs ago
AndrewAndrew
1185
asked 9 secs ago
AndrewAndrew
1185
asked 9 secs ago
AndrewAndrew
1185
asked 9 secs ago
AndrewAndrew
1185
asked 9 secs ago
AndrewAndrew
1185
1185
add a comment |
add a comment |
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