troubleshooting Question

Basic SQL Query Select Question FK tables

Avatar of sbornstein2
sbornstein2 asked on
Microsoft SQL Server
5 Comments1 Solution53 ViewsLast Modified:
Hello all,

Okay this is a basic question but want the best practice.   If I have a FK ID field in my main query FROM table that joins to that PK table.    I know it does not matter but best practice the ID field should that reference the main FROM table or the joined PF table.   For example,

SELECT
IV.InvoiceGroupID,   --should this use the main table InvoiceGroupID or the IG table best practice
IG.InvoiceGroupName
FROM Invoice IV
JOIN InvoiceGroup IG ON IV. InvoiceGroupID = IG.InvoiceGroupID

Also one other thing is the JOIN which table should always be the first in the ON statement?   Sometimes I find myself mixing them.

Again all best practice I am looking for.

Thanks all
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