Re: How to get the position of each record in a SELECT statement

While there is no literal “position” of each record in relational theory, the row_number() function might accomplish your requirement
You do have an order by so that must drive the position in your definition:

Select row_number() over (order by first) as “position”, first,id from customers order by first

From: pgsql-sql-owner(at)postgresql(dot)org [mailto:pgsql-sql-owner(at)postgresql(dot)org] On Behalf Of JORGE MALDONADO
Sent: Friday, October 07, 2016 1:20 PM
To: pgsql-sql(at)postgresql(dot)org
Subject: [SQL] How to get the position of each record in a SELECT statement

Let´s say that I have the following simple SELECT statement:

SELECT first, id FROM customers ORDER BY first

This would result in something like this:
Charles C1001
John A3021
Kevin F2016
Paul N4312
Steve J0087

Is it possible to include a "field" in the SELECT such that it represents the position of each record?
For example, I need to get a result like this:

1 Charles C1001
2 John A3021
3 Kevin F2016
4 Paul N4312
5 Steve J0087

Respectfully,
Jorge Maldonado
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