Андрей1985,
вот пример запроса к удаленной ФБ-базе через EDS-механизм (external datasource; введён с 2.5) и параметрический запрос:
SQL> create database 't01.fdb'; commit;
SQL> create table t(id int, f01 int, s01 varchar(10)); commit;
SQL> insert into t values(1, 100, 'abcdef');
SQL> insert into t values(2, 200, 'ghijkl');
SQL> insert into t values(3, 300, 'mnopqr');
SQL> commit;
SQL> quit;
SQL> create database 't02.fdb'; commit;
SQL> create table t2(id int, f01 int, s01 varchar(10)); commit;
SQL> set term ^;
SQL> execute block
CON> as
CON> declare v_stt varchar(2048);
CON> declare usr varchar(8)='sysdba';
CON> declare pas varchar(8)='masterke';
CON> declare src varchar(255)='localhost/3050:C:\1INSTALL\FIREBIRD\Data\t01.fdb';
CON> declare id type of column t2.id;
CON> declare f01 type of column t2.f01;
CON> declare s01 type of column t2.s01;
CON> declare v_id int = 2;
CON> begin
CON> delete from t2;
CON> v_stt='select id, f01, s01 from t where id<>:some_id';
CON> for
CON> execute statement(:v_stt)(some_id := :v_id)
CON> on external(:src)
CON> with common transaction
CON> as user(:usr) password(:pas)
CON> into
CON> id, f01, s01
CON> do
CON> insert into t2(id, f01, s01) values(:id, :f01, :s01);
CON> end^
SQL> set term ;^
SQL> commit;
SQL> select * from t2;
ID F01 S01
============ ============ ==========
1 100 abcdef
3 300 mnopqr