Database.PostgreSQL.Entity.DBT

Create a Pool Connection with the appropriate parameters

Run a DBT action with no explicit error handling.

This functions is suited for using MonadError error handling.

Example

let e1 = E 1 True True
result <- runExceptT @EntityError $ do
  withPool pool $ insertEntity e1
  withPool pool $ markForProcessing 1
case result of
  Left err -> print err
  Right _  -> putStrLn "Everything went well"

See the code in the example/ directory on GitHub

Query wrapper for SQL statements which do not return.

Query wrapper for SQL statements that operate on multiple rows which do not return.

Query wrapper that returns a Vector of results

Query wrapper that returns a Vector of results and does not take an argument

Query wrapper that returns one result.

Query wrapper that returns one result and does not take an argument

This sum type is given to the query, queryOne and execute functions to help with logging.