I’m developing an app on Heroku with a Postgresql backend. Periodically, I get this error message when trying to access the database, both from the CLI and from loading a page on the server: Anyone seen this before or please help point me in the right direction?
This feature has been implemented in Postgres 9.1: For older versions, here is a function to work around it: Call: Notes The columns schemaname and tablename in pg_tables are case-sensitive. If you double-quote identifiers in the CREATE TABLE statement, you need to use the exact same spelling. If you don’t, you need to use lower-case strings. See: Are PostgreSQL column names case-sensitive? pg_tables only contains actual tables. The … Read more
It appears that your package manager failed to create the database named $user for you. The reason that works for you is that template1 is a database created by postgres itself, and is present on all installations. You are apparently able to log in to template1, so you must have some rights assigned to you … Read more
What is a LATERAL join? The feature was introduced with PostgreSQL 9.3. The manual: Subqueries appearing in FROM can be preceded by the key word LATERAL. This allows them to reference columns provided by preceding FROM items. (Without LATERAL, each subquery is evaluated independently and so cannot cross-reference any other FROM item.) Table functions appearing in FROM can also be preceded by the key word LATERAL, but for functions the key … Read more
Type \q and then press ENTER to quit psql. UPDATE: 19-OCT-2018 As of PostgreSQL 11, the keywords “quit” and “exit” in the PostgreSQL command-line interface have been included to help make it easier to leave the command-line tool.
To log in without a password: To reset the password if you have forgotten:
The stored procedure won’t just return the result of the last SELECT. You need to actually return the value: You’re getting the error because Postgres expects the function to return something of type text, but your function doesn’t return anything.
Technically, to repair your statement, you can add LIMIT 1 to the subquery to ensure that at most 1 row is returned. That would remove the error, your code would still be nonsense. Practically, you want to match rows somehow instead of picking an arbitrary row from the remote table store to update every row of your local table customer.Your rudimentary question … Read more
NOTE: If you installed postgres using homebrew, see the comment from @user3402754 below. Note that the error message does NOT talk about a missing database, it talks about a missing role. Later in the login process it might also stumble over the missing database. But the first step is to check the missing role: What is the … Read more
You need to specify where the database directory is installed to. eg Failing that you will need to set the environment variable PGDATA. Something like