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How to update count column from child table?
Message
 
 
À
17/11/2000 13:30:39
Information générale
Forum:
Microsoft SQL Server
Catégorie:
Syntaxe SQL
Divers
Thread ID:
00443143
Message ID:
00443184
Vues:
12
Isaac,
Are you talking about creating an SP for this? The parameter you passed in would be used to select the parent and the child.

If you aren't then you need to create a cursor from the parent table select and fetch each pcode. Then use this to process all parent and child rows.

HTH.

>Hello,
>
>I'm trying to figure out the syntax for updating a count column based on the child table count.
>Parent table has the columns columns pcode, childcount
>Child table has the columns pcode, childname
>
>I'm thinking I want to do something like the following, though I'm stuck
>figuring out how to finish the sql
>
>update parent
>set childcount =
> (select COUNT(item_code)
> from child
> where child.pcode = parent.pcode)
>
>How do I tell the subquery what the parent.pcode is?
>
>Any suggestions would be greatly appreciated.
>
>Thanks,
>-Isaac
Larry Miller
MCSD
LWMiller3@verizon.net

Accumulate learning by study, understand what you learn by questioning. -- Mingjiao
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