How can I correctly choose maximum number of occurrences of a string while grouping by another field?
I am using Postgresql 9.0. I have the following fields in a table: id, name. id name 1 John 1 Mary 1 Mary 1 Mary 1 John 1 Mary 3 Paul 3 Paul 3 George ...
I am trying to construct a query in PostgreSQL 9.0 that gets the longest sequence of continuous rows for a specifc field. Consider the following table: lap_id (Serial), lap_no (int), car_type ...
Firstly apologies if this is a duplicate, I am fairly new to SQL and so Im not sure what the correct terminology to use in my searches So I have a database which records motor races, with the ...
I have a table with the following characteristics: We INSERT a few 100k rows each day We never UPDATE the rows We DELETE "old" data once a week From my shallow knowledge of Postgres VACUUM, it ...
I cannot connect to PostgreSQL server from PgAdmin III , so i get this error: Error connecting to the server: server closed the connection unexpectedly This probably means the server ...