I have a query that show the above error, yet runs OK when run from IBExpert.

EXECUTE BLOCK AS
declare variable D bigint; declare variable A bigint;
declare variable V integer; declare variable I bigint;
declare variable J bigint; declare variable X integer;
declare variable W integer; declare variable U integer;
begin
select first 1 (cast(DXS_NO as integer)) from IMPORT_DXS where Used = 'T' into i;
select max(cast(DXS_NO as integer)) from IMPORT_DXS where Used = 'T' into j;
while (i <= j)
do
begin
select cast(dxs_no as integer), cast(abs_no as integer), cast(Value1 as integer),
cast(uop as integer), cast(DB as integer), cast(DW as integer) from IMPORT_DXS
where :i = cast(dxs_no as integer) into d, a, v, u, x, w;
update DXS set ABS_NO = :a, Value1 = :v, USED = 'T', UOP = :u
where DX = :x and DW = :w;
i= i+1;
end
end

Prior to this query are 2 others. the 1st uses an execute block statement to delete IMPORT_DXS if it exists & the 2nd creates the IMPORT_DXS table from an external file, both of these run without errors.

Can anyone see where I'm going wrong?

Jack