PQerrorMessage Function

public function PQerrorMessage(conn) result(PQerrormessage)

Returns the error message most recently generated by an operation on the connection.

Nearly all libpq functions will set a message for PQerrorMessage if they fail. Note that by libpq convention, a nonempty PQerrorMessage result can consist of multiple lines, and will include a trailing newline. The caller should not free the result directly. It will be freed when the associated PGconn handle is passed to PQfinish. The result string should not be expected to remain the same across operations on the PGconn structure.

cf. PostgreSQL Documentation

Arguments

Type	Intent	Optional	Attributes		Name
type(c_ptr),	intent(in)			::	conn

Return Value character(kind=c_char, len=:), pointer

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