struct Athena::ORM::Driver::Postgres
inherits Athena::ORM::Driver
#
The postgres driver shard (will/crystal-pg), using AORM::Platforms::Postgres.
The shard only accepts numbered parameter placeholders ($1, $2, ...), so the ? placeholders in statements are numbered when they're prepared.
It doesn't report generated identifiers either, so #last_insert_id asks the server.
Methods#
#database_platform(connection : DB::Connection) : Platforms::Platform#
Returns the platform of the database connection is to.
#last_insert_id(connection : DB::Connection, reported_id : Int64) : Int64#
Returns the identifier generated by the last statement executed on connection, for which the driver shard reported reported_id.
Raises AORM::Exceptions::NoIdentityValue if that statement didn't generate one.
Returns the value most recently generated by a sequence in connection's session (SELECT LASTVAL()).
The driver shard raises if no sequence was used yet.
#prepare(connection : DB::Connection, sql : String) : DB::Statement#
Returns the statement executing sql on connection.