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Thank you. Sorting works.

Error executing CurrentRows.Sort(HighLevelSort)
procedure TZAbstractRODataset.InternalSort;
in src\component\ZAbstractRODataset.pas

Thank you, there is no error installing FirebirdAPI = legacy

in lazarus 3.99 with fpc 3.2.2. no error, with fpc 3.3.1 access violation error

lazarus win32/win64 ver. 3.99
fpc 3.3.1
firebird 3.0
http://svn.code.sf.net/p/zeoslib/code-0 ... .0-patches

error in file src\plain\ZPlainFirebird.pas

function IMaster.getStatus(): IStatus;
begin
Result := MasterVTable(vTable).getStatus(Self);
end;

The error occurs in the file\src\dbc\ZDbcCache.pas

Sorting by calculated field does not work. Example attached.

ERROR: ACCESS VIOLATION
lazarus-3.2-fpc-3.2.2-win64
zeos 8.0 last
http://svn.code.sf.net/p/zeoslib/code-0 ... .0-patches

Sample project:
https://disk.yandex.ru/d/o8XHP42Xq0-Z8Q

Sorting does not work when creating the calculated qty: TFloatField field in TZQuery.
FieldName := FixFieldName('qty') + ' Desc'; TZAbstractRODataset(ADataSet).SortedFields:=FieldName;
An error appears.

I create a calculated 'qty' field as TFloatField in TZQuery.
OnCalcFields
Queryqty.Value := 4;
When sorting
FieldName := FixFieldName('qty') + ' Asc'
TZAbstractRODataset(ADataSet).SortedFields:=FieldName;
Error appears