AS
American Samoa | American SamoaAD
Andorra | AndorraAO
Angola | AngolaAI
Anguilla | AnguillaAQ
Antarctica | AntarcticaAG
Antigua and Barbuda | Antigua and BarbudaNZ
Aotearoa | New ZealandAR
Argentina | ArgentinaAW
Aruba | ArubaAU
Australia | AustraliaAZ
Azərbaycan | AzerbaijanBS
Bahamas | BahamasBB
Barbados | BarbadosBE
Belgien | BelgiumBZ
Belize | BelizeBJ
Bénin | BeninBM
Bermuda | BermudaBO
Bolivia - Buliwya - Wuliwya - Volívia | BoliviaBA
Bosna i Hercegovina - Боснa и Херцеговинa | Bosnia HerzegovinaBW
Botswana | BotsuanaBR
Brasil | BrazilIO
British Indian Ocean Territory | British Indian Ocean TerritoryVG
British Virgin Islands | British Virgin IslandsBN
Brunei Darussalam | BruneiBF
Burkina Faso | Burkina FasoCV
Cabo verde - Kabu Verdi | Cape VerdeCM
Cameroun - Kamerun | CameroonCA
Canada | CanadaKY
Cayman Islands | Cayman IslandsCZ
Česko | Czech RepublicCL
Chile | ChileCX
Christmas Island | Christmas IslandCC
Cocos (Keeling) Islands | Cocos (Keeling) IslandsCO
Colombia | ColombiaCK
Cook Islands | Cook IslandsCR
Costa Rica | Costa RicaCI
Côte d´Ivoire | Ivory CoastCU
Cuba | CubaCW
Curaçao | CuraçaoDK
Danmark | DenmarkDE
Deutschland | GermanyDJ
Djibouti - جيبوتي | DjiboutiDM
Dominica | DominicaEE
Eesti | EstoniaCH
Eidgenossenschaft - Suisse - Svizzera | SwitzerlandSV
El Salvador | El SalvadorES
España | SpainSZ
eSwatini | SwazilandOF
États de l'Afrique de l'Ouest | West African StatesFO
Færøerne | Faroe IslandsGA
Gabon | GabonGM
Gambia | GambiaGH
Ghana | GhanaGI
Gibraltar | GibraltarGN
Ginee - Guinée | GuineaGT
Guatemala | GuatemalaGG
Guernsey | GuernseyGQ
Guinée équatoriale | Equatorial GuineaGY
Guyana | GuyanaGF
Guyane française | French GuianaHT
Haïti - Ayiti | HaitiHN
Honduras | HondurasHR
Hrvatska | CroatiaEC
Ikwayur - Ecuador - Ekuatur | EcuadorID
Indonesia | IndonesiaIE
Ireland | IrelandIS
Ísland | IcelandFK
Islas Malvinas | Falkland IslandsIT
Italia | ItalyJM
Jamaica | JamaicaJE
Jersey | JerseyKE
Kenya | KenyaFR
La France | FranceGD
La Grenade | GrenadaRE
La Réunion | RéunionLV
Latvija | LatviaLS
Lesotho | LesothoLR
Liberia | LiberiaLT
Lietuva | LithuaniaHU
Magyarország | HungaryMW
Malaŵi | MalawiMY
Malaysia | MalaysiaMT
Malta | MaltaIM
Mannin (Manés) | Isle of ManMU
Maurice - Moris | MauritiusMX
México | MexicoMZ
Moçambique - Mozambiki | MozambiqueMS
Montserrat | MontserratMR
Muritanya - موريتانيا | MauritaniaMM
Myanma - Bama | Myanmar (Burma)NR
Nauru | NauruNL
Nederland | NetherlandsAN
Nederlandse Antillen - Antia Hulandes | Netherlands AntillesNI
Nicaragua | NicaraguaNE
Niger | NigerNG
Nijeriya - Naíjíríyà | NigeriaZA
Ningizimu Afrika | South AfricaNU
Niue | NiueNF
Norfolk Island | Norfolk IslandNO
Norge - Noreg | NorwayMP
Northern Mariana Islands | Northern Mariana IslandsNC
Nouvelle-Calédonie | New CaledoniaAT
Österreich | AustriaUZ
Oʻzbekiston | UzbekistanPW
Palau | PalauPA
Panamá | PanamaPG
Papua Niugini | Papua New GuineaPY
Paraguái | ParaguayPE
Perú - Piruw | PeruPH
Pilipinas - Filipinas | PhilippinesPN
Pitcairn Islands | Pitcairn IslandsPL
Polska | PolandPF
Polynésie française - Pōrīnetia Farāni | French PolynesiaPT
Portugal | PortugalPR
Puerto Rico | Puerto RicoSC
Repiblik Sesel | SeychellesMG
Repoblikan´i Madagasikara - République de Madagascar | MadagascarDO
República Dominicana | Dominican RepublicMD
República Moldova | MoldovaNA
Republik Namibia | NamibiaCD
République Démocratique du Congo | Democratic Republic of the CongoRO
România | RomaniaRW
Rwanda | RwandaSH
Saint Helena | Saint HelenaKN
Saint Kitts and Nevis | Saint Kitts and NevisLC
Saint Lucia | Saint LuciaVC
Saint Vincent and the Grenadines | Saint Vincent and the GrenadinesPM
Saint-Pierre-et-Miquelon | Saint Pierre and MiquelonSL
Salone | Sierra LeoneWS
Sāmoa | SamoaSM
San Marino | San MarinoST
São Tomé and Príncipe | São Tomé and PríncipeSN
Sénégal | SenegalAL
Shqipëri | AlbaniaSG
Singapura | SingaporeSI
Slovenija | SloveniaSK
Slovensko | SlovakiaSB
Solomon Islands | Solomon IslandsSO
Soomaaliya | SomaliaGS
South Georgia | South GeorgiaFI
Suomi | FinlandSR
Suriname | SurinameSJ
Svalbard og Jan Mayen | Svalbard and Jan MayenSE
Sverige | SwedenTZ
Tanzania | TanzaniaTL
Timor-Leste | Timor-LesteTG
Togo | TogoTK
Tokelau | TokelauTO
Tonga | TongaTT
Trinidad and Tobago | Trinidad and TobagoTR
Türkiye | TurkeyTM
Türkmenistan | TurkmenistanTC
Turks and Caicos Islands | Turks and Caicos IslandsTV
Tuvalu | TuvaluBI
Uburundi | BurundiKM
Udzima wa Komori - الاتحاد القمر | ComorosUG
Uganda | UgandaEU
Unión Europea | European UnionGB
United Kingdom | United KingdomUS
United States | United StatesUM
United States Minor Outlying Islands | United States Minor Outlying IslandsVI
United States Virgin Islands | United States Virgin IslandsUY
Uruguay | UruguayVU
Vanuatu | VanuatuVE
Venezuela | VenezuelaVN
Việt Nam | VietnamFJ
Viti - फ़िजी | FijiWF
Wallis et Futuna | Wallis and FutunaEH
Western Sahara | Western SaharaZM
Zambia | ZambiaZW
Zimbabwe | ZimbabweCY
Κύπρος | CyprusMK
Μακεδονία | Macedonia (FYROM)BY
Беларусь (Belarus) | BelarusBG
България | BulgariaKG
Кыргызстан | KyrgyzstanMN
Монгол улс - Монголия | MongoliaRU
Росси́я | RussiaRS
Србија - Srbija | SerbiaTJ
Тоҷикистон - Tojikiston | TajikistanUA
Україна | UkraineME
Црна Гора | MontenegroKZ
Қазақстан | KazakhstanAM
Հայաստան | ArmeniaIL
יִשְׂרָאֵל | IsraelAF
افغانستان | AfghanistanJO
الأردن | JordanAE
الإمارات العربية المتحدة | United Arab EmiratesBH
البحرين | BahrainDZ
الجزائر | AlgeriaSD
السودان | SudanIQ
العراق | IraqKW
الكويت | KuwaitMA
المغرب | MoroccoSA
المملكة العربية السعودية | Saudi ArabiaYE
اليمن | YemenIR
ایران | IranTD
تشاد | ChadTN
تونس | TunisiaSY
سوريا | SyriaOM
عُمان | OmanPS
فلسطين | PalestineQA
قطر | QatarLB
لبنان | LebanonLY
ليبيا | LibyaEG
مصر | EgyptPK
پاكِستان | PakistanMV
ދިވެހިރާއްޖެ | MaldivesNP
नेपाल | NepalIN
भारत | IndiaBD
বাংলাদেশ | BangladeshLK
ශ්රී ලංකා - இலங்கை | Sri LankaTH
ประเทศไทย | ThailandLA
ສາທາລະນະລັດ ປະຊາທິປະໄຕ ປະຊາຊົນລາວ - ลาว | Lao People´s Democratic RepublicBT
འབྲུག་ཡུལ | BhutanGE
საქართველო | GeorgiaER
ሃገረ ኤርትራ - | EritreaET
ኢትዮጵያ - Itoophiyaa | EthiopiaKH
កម្ពុជា | CambodiaCN
中华人民共和国 | ChinaJP
日本 | JapanMO
澳門 - ou3mun4*2 | MacauTW
臺灣 - 台湾 | TaiwanHK
香港 - Xiānggǎng | Hong KongKR
대한민국 | South KoreaKP
조선민주주의인민공화국 | North Korea
Funciones de agregación con valores null en sql
Todas las funciones de agregación desestiman los valores nulos, a excepción de la función de agregación Count(*).
Ejemplos:
La función nvl() nos va a permitir obtener un valor concreto en vez de un valor null, por lo que vamos a poder usarlo para evitar que se descarten los valores nulos.
Ejemplo:
La modificación de un valor nulo por otro valor usando la function NVL , no se va a realizar físicamente sobre la table, simplemente se realiza internamente para realizar la consulta.
Ejemplos Funciones de Agregación con Valores Nulos