Select first row in each GROUP BY group?

Select first row in each GROUP BY group?

sql sqlite postgresql group-by greatest-n-per-group

postgresql

Save PL/pgSQL output from PostgreSQL to a CSV file

sql postgresql csv postgresql-copy

postgresql

postgres: upgrade a user to be a superuser?

sql postgresql

postgresql

Insert, on duplicate update in PostgreSQL?

sql postgresql upsert sql-merge

postgresql

Insert text with single quotes in PostgreSQL

sql postgresql quotes string-literals

postgresql

How do I (or can I) SELECT DISTINCT on multiple columns?

sql postgresql sql-update duplicates distinct

postgresql

How to select the nth row in a SQL database table?

mysql sql database oracle postgresql

postgresql

Postgres DB Size Command

sql postgresql postgresql-9.2

postgresql

How to concatenate strings of a string field in a PostgreSQL 'group by' query?

sql postgresql group-by string-aggregation

postgresql

Best way to select random rows PostgreSQL

sql performance postgresql random

postgresql

Postgres and Indexes on Foreign Keys and Primary Keys

sql postgresql foreign-keys

postgresql

updating table rows in postgres using subquery

sql postgresql subquery sql-update

postgresql

How to declare a variable in a PostgreSQL query

sql postgresql postgresql-8.3

postgresql

Best practices for SQL varchar column length [closed]

mysql sql sql-server postgresql

postgresql

How to get the top 10 values in postgresql?

sql postgresql sql-limit

postgresql