Connect to database "materialize"

[sploiselle]

@frankmcsherry noticed that with the advent of database namespaces, you now need to specify which database you want to use! psql defaults to your username, which is unlikely to be accurate w/r/t Materialize, so we should evangelize using psql -d materialize

[sploiselle]

psql postgres://localhost:6875/materialize
psql -h localhost -p 6875 materialize
psql -h localhost -p 6875 -d materialize
psql host=localhost,port=6875,dbname=materialize

[rjnn]

We can also send a warning message on connection that says WARNING, NO DATABASE IS SPECIFIED, YOU SHOULD RUN 'SET DATABASE = MATERIALIZE'

[benesch]

We can also send a warning message on connection that says WARNING, NO DATABASE IS SPECIFIED, YOU SHOULD RUN 'SET DATABASE = MATERIALIZE'

This was done in #1780.

[sploiselle]

Closed by #1827