// Common error types
var (
	ErrNotSupported              = errors.New("pq: Unsupported command")
	ErrInFailedTransaction       = errors.New("pq: Could not complete operation in a failed transaction")
	ErrSSLNotSupported           = errors.New("pq: SSL is not enabled on the server")
	ErrSSLKeyUnknownOwnership    = errors.New("pq: Could not get owner information for private key, may not be properly protected")
	ErrSSLKeyHasWorldPermissions = errors.New("pq: Private key has world access. Permissions should be u=rw,g=r (0640) if owned by root, or u=rw (0600), or less")

	ErrCouldNotDetectUsername = errors.New("pq: Could not detect default username. Please provide one explicitly")

	errUnexpectedReady = errors.New("unexpected ReadyForQuery")
	errNoRowsAffected  = errors.New("no RowsAffected available after the empty statement")
	errNoLastInsertID  = errors.New("no LastInsertId available after the empty statement")
)