debes de leer los campos que te interesa de oinv y que canceled=‘N’ no es tan complejo:
SELECT DocEntry, DocNum, DocType, CANCELED, Handwrtten, Printed, DocStatus, InvntSttus, Transfered, ObjType, DocDate, DocDueDate, CardCode, CardName, Address, NumAtCard, VatPercent, VatSum, VatSumFC, DiscPrcnt, DiscSum, DiscSumFC, DocCur, DocRate, DocTotal, DocTotalFC, PaidToDate, PaidFC, GrosProfit, GrosProfFC, Ref1, Ref2, Comments, JrnlMemo, TransId, ReceiptNum, GroupNum, DocTime, SlpCode, TrnspCode, PartSupply, Confirmed, GrossBase, ImportEnt, CreateTran, SummryType, UpdInvnt, UpdCardBal, Instance, Flags, InvntDirec, CntctCode, ShowSCN, FatherCard, SysRate, CurSource, VatSumSy, DiscSumSy, DocTotalSy, PaidSys, FatherType, GrosProfSy, UpdateDate, IsICT, CreateDate, Volume, VolUnit, Weight, WeightUnit, Series, TaxDate, Filler, DataSource, StampNum, isCrin, FinncPriod, UserSign, selfInv, VatPaid, VatPaidFC, VatPaidSys, UserSign2, WddStatus, draftKey, TotalExpns, TotalExpFC, TotalExpSC, DunnLevel, Address2, LogInstanc, Exported, StationID, Indicator, NetProc, AqcsTax, AqcsTaxFC, AqcsTaxSC, CashDiscPr, CashDiscnt, CashDiscFC, CashDiscSC, ShipToCode, LicTradNum, PaymentRef, WTSum, WTSumFC, WTSumSC, RoundDif, RoundDifFC, RoundDifSy, CheckDigit, Form1099, Box1099, submitted, PoPrss, Rounding, RevisionPo, Segment, ReqDate, CancelDate, PickStatus, Pick, BlockDunn, PeyMethod, PayBlock, PayBlckRef, MaxDscn, Reserve, Max1099, CntrlBnk, PickRmrk, ISRCodLine, ExpAppl, ExpApplFC, ExpApplSC, Project, DeferrTax, LetterNum, FromDate, ToDate, WTApplied, WTAppliedF, BoeReserev, AgentCode, WTAppliedS, EquVatSum, EquVatSumF, EquVatSumS, Installmnt, VATFirst, NnSbAmnt, NnSbAmntSC, NbSbAmntFC, ExepAmnt, ExepAmntSC, ExepAmntFC, VatDate, CorrExt, CorrInv, NCorrInv, CEECFlag, BaseAmnt, BaseAmntSC, BaseAmntFC, CtlAccount, BPLId, BPLName, VATRegNum, TxInvRptNo, TxInvRptDt, KVVATCode, WTDetails, SumAbsId, SumRptDate, PIndicator, ManualNum, UseShpdGd, BaseVtAt, BaseVtAtSC, BaseVtAtFC, NnSbVAt, NnSbVAtSC, NbSbVAtFC, ExptVAt, ExptVAtSC, ExptVAtFC, LYPmtAt, LYPmtAtSC, LYPmtAtFC, ExpAnSum, ExpAnSys, ExpAnFrgn, DocSubType, DpmStatus, DpmAmnt, DpmAmntSC, DpmAmntFC, DpmDrawn, DpmPrcnt, PaidSum, PaidSumFc, PaidSumSc, FolioPref, FolioNum, DpmAppl, DpmApplFc, DpmApplSc, LPgFolioN, Header, Footer, Posted, OwnerCode, BPChCode, BPChCntc, PayToCode, IsPaytoBnk, BnkCntry, BankCode, BnkAccount, BnkBranch, isIns, TrackNo, VersionNum, LangCode, BPNameOW, BillToOW, ShipToOW, RetInvoice, ClsDate, MInvNum, MInvDate, SeqCode, Serial, SeriesStr, SubStr, Model, TaxOnExp, TaxOnExpFc, TaxOnExpSc, TaxOnExAp, TaxOnExApF, TaxOnExApS, LastPmnTyp, LndCstNum, UseCorrVat, BlkCredMmo, OpenForLaC, Excised, ExcRefDate, ExcRmvTime, SrvGpPrcnt, DepositNum, CertNum, DutyStatus, AutoCrtFlw, FlwRefDate, FlwRefNum, VatJENum, DpmVat, DpmVatFc, DpmVatSc, DpmAppVat, DpmAppVatF, DpmAppVatS, InsurOp347, IgnRelDoc, BuildDesc, ResidenNum, Checker, Payee, CopyNumber, SSIExmpt, PQTGrpSer, PQTGrpNum, PQTGrpHW, ReopOriDoc, ReopManCls, DocManClsd, ClosingOpt, SpecDate, Ordered, NTSApprov, NTSWebSite, NTSeTaxNo, NTSApprNo, PayDuMonth, ExtraMonth, ExtraDays, CdcOffset, SignMsg, SignDigest, CertifNum, KeyVersion, EDocGenTyp, ESeries, EDocNum, EDocExpFrm, OnlineQuo, POSEqNum, POSManufSN, POSCashN, EDocStatus, EDocCntnt, EDocProces, EDocErrCod, EDocErrMsg, EDocCancel, EDocTest, EDocPrefix, CUP, CIG, DpmAsDscnt, Attachment, AtcEntry, SupplCode, GTSRlvnt, BaseDisc, BaseDiscSc, BaseDiscFc, BaseDiscPr, CreateTS, UpdateTS, SrvTaxRule, AnnInvDecR, Supplier, Releaser, Receiver, ToWhsCode, AssetDate, Requester, ReqName, Branch, Department, Email, Notify, ReqType, OriginType, IsReuseNum, IsReuseNFN, DocDlvry, PaidDpm, PaidDpmF, PaidDpmS, EnvTypeNFe, AgrNo, IsAlt, AltBaseTyp, AltBaseEnt, AuthCode, StDlvDate, StDlvTime, EndDlvDate, EndDlvTime, VclPlate, ElCoStatus, AtDocType, ElCoMsg, PrintSEPA, FreeChrg, FreeChrgFC, FreeChrgSC, NfeValue, FiscDocNum, RelatedTyp, RelatedEnt, CCDEntry, NfePrntFo, ZrdAbs, POSRcptNo, FoCTax, FoCTaxFC, FoCTaxSC, TpCusPres, ExcDocDate, FoCFrght, FoCFrghtFC, FoCFrghtSC, InterimTyp, PTICode, Letter, FolNumFrom, FolNumTo, FolSeries, SplitTax, SplitTaxFC, SplitTaxSC, ToBinCode, PriceMode, PoDropPrss, PermitNo, MYFtype, DocTaxID, DateReport, RepSection, ExclTaxRep, PosCashReg, DmpTransID, ECommerBP, EComerGSTN, Revision, RevRefNo, RevRefDate, RevCreRefN, RevCreRefD, TaxInvNo, FrmBpDate, GSTTranTyp, BaseType, BaseEntry, ComTrade, UseBilAddr, IssReason, ComTradeRt, SplitPmnt, SOIWizId, SelfPosted, EnBnkAcct, EncryptIV, DPPStatus, EWBGenType, SAPPassprt, CtActTax, CtActTaxFC, CtActTaxSC FROM OINV WHERE month(DocDate)=month(CURRENT_DATE) and CANCELED='N'
este query te jala todos los campos de las facturas no canceladas del mes, tu acomodalo a tus necesidades.