How to get sales/purchase tax/GST/VAT info for report?

For posted Sales Invoice report

1 2	select taxTrans where taxTrans.InventTransId == _custInvoiceTrans.InventTransId;     salesInvoiceTmp.TaxValue = taxTrans.TaxValue;

For posted Free Text Invoice report

1 2 3 4

select taxTrans     where taxTrans.Source == TaxModuleType::FreeTxtInvoice         && taxTrans.SourceTableId == tableNum(CustInvoiceTrans)         && taxTrans.SourceRecId == _custInvoiceTrans.RecId;