Which clause performs first in a SELECT
statement?
I have a doubt in select
query on this basis.
consider the below example
If you come to this site for the question about logical query processing
, you really need to read this article on ITProToday by Itzik Ben-Gan.
Figure 3: Logical query processing order of query clauses
1 FROM
2 WHERE
3 GROUP BY
4 HAVING
5 SELECT
5.1 SELECT list
5.2 DISTINCT
6 ORDER BY
7 TOP / OFFSET-FETCH