ActiveRecord query group and Postgresql
126717
How to approach GROUP BY in PostgreSQL using Rails?
2806
How to Pivot in PostgreSQL
43481
Returning query results in predefined order
30935
ActiveRecord Find All not sorting by ID?
77462
PGError: ERROR: column "p.name" must appear in the GROUP BY clause or be used in an aggregate function
125959
Can a single PostgreSQL query use multiple cores?
49351
JPA Criteria API group_concat usage
136557
Postgres sql insert query syntax error from phpPgAdmin
140337
Using an aggregate function in where
103174
how does activerecord know to perform an insert or update?
48436
"AT TIME ZONE" with zone name PostgreSQL bug?
32395
How do I remove duplicate records in a join table in PostgreSQL?
143452
PostgreSQL - fetch the row which has the Max value for a column
119012
What types of fields are groupable in a SOQL `GROUP BY` clause?
14638
PostgreSQL -must appear in the GROUP BY clause or be used in an aggregate function
91452
Rails ActiveRecord conditions
111920
Understanding psql prompts