why this query does not work in Lazarus? lazarus / 16-Databases ---------------------------------------------------------------------- cpalx · 2009-02-24 17:24 hello, a have a query that works in pgAdmin, but when i use Zquery it does not work, just Access Violation. The query is : select  guiaFechaIngreso as "Fecha",    ProvNombre as "Proveedor",    D.ClasCodigo as "Cod. Modelo",    CL.clasNombre as "Modelo",    gde2Costo as "Cto Unitario",    D.moneSigla as "Moneda",    gde2Serie as "Serie",    guiaDocSerie || '-' || guiaDocNumero as "Nro de Guia",    gufaNumDoc as "Documento",    tidoNombre as "Tipo Doc"-- gufaTipoDoc from STguia as S, STproveedor as P, STguia_detalle2 as D, STguia_docAsociado as A, STTipoDoc as TD, STclase as CL where   S.guiaPreNum = D.guiaPreNum and    P.provRuc = S.guiaRUCproveedor and    A.guiaPreNUm = S.guiaPreNUm and    A.guiaPreNUm = D.guiaPreNUm and    gufaTipoDoc = tidoCodigo and    D.clascodigo = CL.clascodigo ---------------------------------------------------------------------- cpalx · 2009-02-24 17:50 i changed to this way and now works perfectly  SELECT "GU"."guiafechaingreso", "PR"."provnombre",    "GD2"."clascodigo", "GD2"."gde2costo",    "GD2"."monesigla", "GD2"."gde2serie",    "GU"."guiadocserie", "GU"."guiadocnumero",    "DA"."gufanumdoc", "TD"."tidonombre" FROM    "STgestion_B3"."public"."stguia_detalle2" AS "GD2",    "STgestion_B3"."public"."stguia_detalle" AS "GD",    "STgestion_B3"."public"."stguia" AS "GU",    "STgestion_B3"."public"."stguia_docasociado" AS "DA",    "STgestion_B3"."public"."stproveedor" AS "PR",    "STgestion_B3"."public"."sttipodoc" AS "TD" WHERE    "GD2"."gudeid" = "GD"."gudeid" AND    "GD"."guiaprenum" = "GU"."guiaprenum" AND    "DA"."guiaprenum" = "GU"."guiaprenum" AND    "PR"."provruc" = "GU"."guiarucproveedor" AND    "TD"."tidocodigo" = "DA"."gufatipodoc" ---------------------------------------------------------------------- Marc · 2009-02-24 23:22 Tip, if you don't use case sensitive fields, remove all " ---------------------------------------------------------------------- cpalx · 2009-02-25 14:29 thanks for your tip, i will do it.