execute ibeblock
as
begin

FBSrc  = ibec_CreateConnection(__ctFirebird,'DBName="srv:db_name"; READONLY=YES;
 ClientLib=fbclient.dll; 
 user=login; password=pass; names=WIN1251; sqldialect=3');

ibec_UseConnection(FBSrc);

SET TRANSACTION ISOLATION LEVEL READ COMMITTED;

select
field_name
from table_name

EXPORT AS CSV INTO 'E:\test\test.csv'
 OPTIONS 'QuoteStrings; Delimiter=";"; FloatFormat="0.0000"';
ibec_CloseConnection(FBSrc);
end

ibec_SetConnectionProp(FBSrc, 'TRPARAMS', 'isc_tpb_read,isc_tpb_read_committed');