# 2025-10-29 08:49:56.833339
+SELECT * FROM studenten

# 2025-10-29 08:51:04.747097
+INSERT INTO studenten ('Paul Meier', '23231', 1);

# 2025-10-29 08:52:29.182978
+INSERT INTO studenten (name, matrikelnummer, semester) values 
+('Paul Meier', '23231', 1); 

# 2025-10-29 08:52:51.770728
+select * from studenten

# 2025-10-29 08:53:02.144052
+select * from studenten;

# 2025-10-29 08:53:48.231707
+exit

# 2025-10-29 09:03:49.683162
+\q

# 2025-10-29 09:04:23.508245
+SELECT * FROM studenten;

# 2025-10-29 09:04:43.099272
+\o ausgabe.txt

# 2025-10-29 09:04:59.030321
+SELECT * FROM studenten;

# 2025-10-29 09:05:11.987694
+\o 

# 2025-10-29 09:05:17.664800
+SELECT * FROM studenten;

# 2025-10-29 09:06:07.519552
+\copy (select * from studenten) TO '/tmp/export.csv' CSV HEADER;

# 2025-10-29 09:06:47.842090
+\q

# 2025-10-29 10:04:52.757343
+exit

# 2025-10-29 13:29:01.669708
+\d

# 2025-10-29 13:29:06.993942
+\l

# 2025-10-29 13:29:37.747294
+\d

# 2025-10-29 17:19:54.221521
+insert into kunde (vorname, nachname, straße, hausnr, plz, ort, gebdat) values 
+('Werner', 'Wiesel', 'Bergstr.', '3', '01088', 'Dresden', '12.12.1980'),
+	('Petra', 'Puma', 'Bachstr.', '44', '01127', 'Dresden', '11.11.1982'),
+	('Walter', 'Wiesel', 'Burgstr.', '5', '01019', 'Dresden', '10.10.1977'),
+	('Frieda', 'Fuchs', 'Hainstr.', '27', '01214', 'Dresden', '09.09.1967'),
+	('Heiner', 'Hase', 'Hauptstr.', '13', '01077', 'Dresden', '08.08.1973'),
+	('Anita', 'Amsel', 'Schulstr.', '7', '01133', 'Dresden', '07.07.1975');

# 2025-10-29 17:20:44.104456
+insert into abo (zeitschrift, kunde_kndnr, zahlungsart, beginn, preis) values 
+('Der Spiegel', '003', 'jährlich', '01.03.1990', '171.60'),
+	('Stern', '003', 'jährlich', '01.07.1992', '145.00'),
+	('Focus', '006', 'jährlich', '01.09.1988', '153.40'),
+	('Der Spiegel', '002', 'monatlich', '02.04.2001', '3.50');

# 2025-10-29 17:20:57.459478
+select * from kunde;

# 2025-10-29 17:21:30.353615
+select * from abo;

# 2025-10-29 17:45:54.602838
+select * from kunde;

# 2025-10-29 17:46:38.189811
+select * from kunde where nachname "Puma";

# 2025-10-29 17:46:46.861835
+select * from kunde where nachname Puma;

# 2025-10-29 17:46:56.190261
+select * from kunde where nachname is 'Puma';

# 2025-10-29 17:47:42.450048
+select * from kunde where nachname = 'Amsel';

# 2025-10-29 17:47:55.848361
+select * from kunde where nachname = 'Wiesel';

# 2025-10-29 17:48:06.713203
+exit

# 2025-10-30 11:55:11.075565
+select * from abo;

# 2025-10-30 12:16:43.439089
+select *;

# 2025-10-30 12:16:48.238381
+clear;

# 2025-10-30 12:16:49.972137
+exit

# 2025-10-30 12:18:04.618134
+select * from abo;

# 2025-10-30 12:18:12.455274
+select * from kunde;

# 2025-10-30 12:28:54.653042
+select vorname, nachname from kunde;

# 2025-10-30 12:29:53.943389
+select * from kunde where kndnr > 3;

# 2025-10-30 12:31:34.873339
+select * from kunde where hausnr < 100;

# 2025-10-30 12:31:43.935372
+select * from kunde where hausnr =< 100;

# 2025-10-30 12:31:49.014606
+select * from kunde where hausnr < 100;

# 2025-10-30 12:32:17.914782
+select nachname as abc from kunde;

# 2025-10-30 12:32:27.981513
+select * from kunde; 

# 2025-10-30 12:35:47.620029
+select nachname abc from kunde where kndnr between 3 and 5; 

# 2025-10-30 12:38:19.353464
+select * from kunde where nachname like 'W%l';

# 2025-10-30 12:38:34.742207
+select * from kunde where nachname like '____l';

# 2025-10-30 12:41:09.956018
+select * from kunde where kndnr in [2,4,5];

# 2025-10-30 12:41:19.997267
+select * from kunde where kndnr in (2,4,5);

# 2025-10-30 12:44:46.500614
+select * from kunde, kunde, kunde, abo;

# 2025-10-30 12:44:53.530681
+select * from kunde, abo;

# 2025-10-30 12:47:55.016574
+select kunde_kndnr, preis, preis + 10 from abo;

# 2025-10-30 12:48:22.049220
+select kunde_kndnr, preis, preis + 10 as abc from abo;

# 2025-10-30 12:49:12.082118
+select kunde_kndnr, preis, preis + 10 as abc from abo where preis/2 > 10;

# 2025-10-30 12:52:59.586248
+select * from kunde where nachname = 'A%l';

# 2025-10-30 12:53:13.635539
+select * from kunde where nachname = 'A_%l';

# 2025-10-30 12:54:24.704814
+select * from kunde where nachname like 'A%l';

# 2025-10-30 12:55:27.564682
+select nachname, vornme from kunde where begin <10;

# 2025-10-30 12:55:33.142400
+select nachname, vorname from kunde where begin <10;

# 2025-10-30 12:56:05.271236
+select nachname, vorname from kunde, abo  where abo.beginn  <10;

# 2025-10-30 12:56:31.682947
+select nachname, vorname from kunde, abo  where abo.beginn < 2015-10-30;

# 2025-10-30 12:56:46.596406
+select nachname, vorname from kunde, abo  where abo.beginn > 2015-10-30;

# 2025-10-30 12:58:07.510214
+select nachname, vorname from kunde, abo  where abo.beginn > '2015-10-30';

# 2025-10-30 12:58:12.793164
+select nachname, vorname from kunde, abo  where abo.beginn < '2015-10-30';

# 2025-10-30 12:58:44.439907
+select nachname, vorname from kunde  where abo.beginn < '2015-10-30';

# 2025-10-30 12:58:53.800340
+select nachname, vorname from kunde,abo  where abo.beginn < '2015-10-30';

# 2025-10-30 12:59:12.017308
+getdate();

# 2025-10-30 13:02:25.831823
+select nachname, vorname from kunde,abo  where abo.beginn datediff <10;

# 2025-10-30 13:02:32.097113
+select nachname, vorname from kunde,abo  where abo.beginn datediff() <10;

# 2025-10-30 13:02:35.384433
+select nachname, vorname from kunde,abo  where abo.beginn < '2015-10-30';

# 2025-10-30 13:02:41.411056
+clear;

# 2025-10-30 13:02:57.344639
+select * from abo;

# 2025-10-30 13:03:27.861140
+select preis from abo where zahlungsart like 'jährlich';

# 2025-10-30 13:03:51.256571
+select * from kunde;

# 2025-10-30 13:05:29.414944
+select kndnr from kunde where gebdat - '0010-00-00' > 10;

# 2025-10-30 13:05:39.242242
+select preis from abo where zahlungsart like 'jährlich';

# 2025-10-30 13:08:09.850800
+select distinct vorname, nachname from kunde join abo on abo.kunde_kndnr = kunde.kndnr where abo.beginn < '2015-10-30';

# 2025-10-30 13:08:29.437689
+select * from kunde where nachname like 'A%l';

# 2025-10-30 13:10:53.258995
+select * from kunde where gebdat < '1.1.2015'; 

# 2025-10-30 13:12:05.917389
+select * from kunde where datediff(year, gebdat, getdate())>10;

# 2025-10-30 13:12:54.470650
+select * from kunde where DATE_PART(year, gebdat, get_date() >10;

# 2025-10-30 13:13:07.173711
+select * from kunde where gebdat < '1.1.2015'; 

# 2025-10-30 13:13:24.901783
+select distinct vorname, nachname from kunde join abo on abo.kunde_kndnr = kunde.kndnr where abo.beginn < '2015-10-30';

# 2025-10-30 13:13:52.068289
+select vorname, nachname from kunde join abo on abo.kunde_kndnr = kunde.kndnr where abo.beginn < '2015-10-30';

# 2025-10-30 13:14:01.781153
+select distinct vorname, nachname from kunde join abo on abo.kunde_kndnr = kunde.kndnr where abo.beginn < '2015-10-30';

# 2025-10-30 13:14:59.248222
+select preis from abo where zahlungsart like 'jährlich';

# 2025-10-30 14:01:16.610074
+\q

# 2025-11-04 12:03:56.063867
+exit

# 2025-11-04 12:04:13.510914
+CREATE USER postgres WITH PASSWORD 'denode';

# 2025-11-04 12:07:25.219902
+Select * from kunde;

# 2025-11-04 12:08:47.099477
+select * from kunde
+select nachname, SUM(kunde.plz) as sumplz, count(distinct kunde.nachname), COUNT(distinct kunde.nachname);

# 2025-11-04 12:09:12.329407
+select * from kunde
+select nachname from  SUM(kunde.plz) as sumplz, count(distinct kunde.nachname), COUNT(distinct kunde.nachname);

# 2025-11-04 12:09:21.128685
+select nachname from  SUM(kunde.plz) as sumplz, count(distinct kunde.nachname), COUNT(distinct kunde.nachname);

# 2025-11-04 12:09:31.062529
+select nachname, SUM(kunde.plz) as sumplz, count(distinct kunde.nachname), COUNT(distinct kunde.nachname);

# 2025-11-04 12:10:04.815138
+select nachname, SUM(kunde.plz) as sumplz, count(distinct kunde.nachname), COUNT(distinct kunde.nachname) from kunde group by nachname, vorname;

# 2025-11-04 12:13:06.368057
+select nachname, SUM(kunde.plz) as sumplz, count(distinct kunde.nachname), COUNT(distinct kunde.nachname) from kunde group by nachname, vorname having COUNT(nachname) >= 2;

# 2025-11-04 12:22:15.590849
+select * from kunde as k1 join junde as ks on k1.kndnr = k2.kndnr;

# 2025-11-04 12:22:20.729818
+select * from kunde as k1 join kunde as ks on k1.kndnr = k2.kndnr;

# 2025-11-04 12:22:40.508008
+select * from kunde as k1 join kunde as k2 on k1.kndnr = k2.kndnr;

# 2025-11-04 12:29:59.396317
+select kunde.* from kunde as k1 left join abo_long a1 on (k1.kndnr = a1.kunde_kndnr) union;

# 2025-11-04 12:30:09.831821
+select kunde.* from kunde as k1 left join abo_long a1 on (k1.kndnr = a1.kunde_kndnr);

# 2025-11-04 12:32:25.662364
+select kunde_kndnr from abo t1, abo t2 where t1.zeitschrift = t2.zeitschrift and t2.kunde_kndnr <> t1.kunde_kndnr;

# 2025-11-04 12:32:41.039436
+select distinct kunde_kndnr from abo t1, abo t2 where t1.zeitschrift = t2.zeitschrift and t2.kunde_kndnr <> t1.kunde_kndnr;

# 2025-11-04 12:39:14.325089
+select * from kunde where kndnr in (select kndnr+1 from kunde);

# 2025-11-04 12:41:02.538612
+select * from kunde where kndnr > all(select kndnr from kunde where kunde."straße");

# 2025-11-04 12:41:14.418642
+select * from kunde where kndnr > all(select kndnr from kunde where hausnr >2);

# 2025-11-04 12:41:21.185620
+select * from kunde where kndnr > all(select kndnr from kunde where hausnr > 2);

# 2025-11-04 12:41:23.840412
+select * from kunde where kndnr > all(select kndnr from kunde where hausnr => 2);

# 2025-11-04 12:41:41.827579
+select * from kunde where kndnr > any (select kndnr from kunde);

# 2025-11-04 14:06:26.703040
+
+
+
+
+CREATE TABLE Country
+(Name VARCHAR(50) NOT NULL UNIQUE,
+ Code VARCHAR(4) CONSTRAINT CountryKey PRIMARY KEY,
+ Capital VARCHAR(50),
+ Province VARCHAR(50),
+ Area DECIMAL CONSTRAINT CountryArea
+   CHECK (Area >= 0),
+ Population DECIMAL CONSTRAINT CountryPop
+   CHECK (Population >= 0));
+
+CREATE TABLE City
+(Name VARCHAR(50),
+ Country VARCHAR(4),
+ Province VARCHAR(50),
+ Population DECIMAL CONSTRAINT CityPop
+   CHECK (Population >= 0),
+ Latitude DECIMAL CONSTRAINT CityLat
+   CHECK ((Latitude >= -90) AND (Latitude <= 90)) ,
+ Longitude DECIMAL CONSTRAINT CityLon
+   CHECK ((Longitude >= -180) AND (Longitude <= 180)) ,
+ Elevation DECIMAL ,
+ CONSTRAINT CityKey PRIMARY KEY (Name, Country, Province));
+
+CREATE TABLE Province
+(Name VARCHAR(50) CONSTRAINT PrName NOT NULL ,
+ Country  VARCHAR(4) CONSTRAINT PrCountry NOT NULL ,
+ Population DECIMAL CONSTRAINT PrPop
+   CHECK (Population >= 0),
+ Area DECIMAL CONSTRAINT PrAr
+   CHECK (Area >= 0),
+ Capital VARCHAR(50),
+ CapProv VARCHAR(50),
+ CONSTRAINT PrKey PRIMARY KEY (Name, Country));
+
+CREATE TABLE Economy
+(Country VARCHAR(4) CONSTRAINT EconomyKey PRIMARY KEY,
+ GDP DECIMAL CONSTRAINT EconomyGDP
+   CHECK (GDP >= 0),
+ Agriculture DECIMAL,
+ Service DECIMAL,
+ Industry DECIMAL,
+ Inflation DECIMAL,
+ Unemployment DECIMAL);
+
+CREATE TABLE Population
+(Country VARCHAR(4) CONSTRAINT PopKey PRIMARY KEY,
+ Population_Growth DECIMAL,
+ Infant_Mortality DECIMAL);
+
+CREATE TABLE Politics
+(Country VARCHAR(4) CONSTRAINT PoliticsKey PRIMARY KEY,
+ Independence DATE,
+ WasDependent VARCHAR(50),
+ Dependent  VARCHAR(4),
+ Government VARCHAR(120));
+
+CREATE TABLE Religion
+(Country VARCHAR(4),
+ Name VARCHAR(50),
+ Percentage DECIMAL CONSTRAINT ReligionPercent 
+   CHECK ((Percentage > 0) AND (Percentage <= 100)),
+ CONSTRAINT ReligionKey PRIMARY KEY (Name, Country));
+
+CREATE TABLE EthnicGroup
+(Country VARCHAR(4),
+ Name VARCHAR(50),
+ Percentage DECIMAL CONSTRAINT EthnicPercent 
+   CHECK ((Percentage > 0) AND (Percentage <= 100)),
+ CONSTRAINT EthnicKey PRIMARY KEY (Name, Country));
+
+CREATE TABLE Spoken
+(Country VARCHAR(4),
+ Language VARCHAR(50),
+ Percentage DECIMAL CONSTRAINT SpokenPercent 
+   CHECK ((Percentage > 0) AND (Percentage <= 100)),
+ CONSTRAINT SpokenKey PRIMARY KEY (Country, Language));
+
+CREATE TABLE Language
+(Name VARCHAR(50) ,
+ Superlanguage VARCHAR(50),
+ CONSTRAINT LanguageKey PRIMARY KEY (Name));
+
+CREATE TABLE Countrypops
+(Country VARCHAR(4),
+ Year DECIMAL CONSTRAINT CountryPopsYear
+   CHECK (Year >= 0),
+ Population DECIMAL CONSTRAINT CountryPopsPop
+   CHECK (Population >= 0),
+ CONSTRAINT CountryPopsKey PRIMARY KEY (Country, Year));
+
+CREATE TABLE Countryothername
+(Country VARCHAR(4),
+ othername VARCHAR(50),
+ CONSTRAINT CountryOthernameKey PRIMARY KEY (Country, othername));
+
+CREATE TABLE Countrylocalname
+(Country VARCHAR(4),
+ localname VARCHAR(300),
+ CONSTRAINT CountrylocalnameKey PRIMARY KEY (Country));
+
+CREATE TABLE Provpops
+(Province VARCHAR(50),
+ Country VARCHAR(4),
+ Year DECIMAL CONSTRAINT ProvPopsYear
+   CHECK (Year >= 0),
+ Population DECIMAL CONSTRAINT ProvPopsPop
+   CHECK (Population >= 0),
+ CONSTRAINT ProvPopKey PRIMARY KEY (Country, Province, Year));
+
+CREATE TABLE Provinceothername
+(Province VARCHAR(50),
+ Country VARCHAR(4),
+ othername VARCHAR(50),
+ CONSTRAINT ProvOthernameKey PRIMARY KEY (Country, Province, othername));
+
+CREATE TABLE Provincelocalname
+(Province VARCHAR(50),
+ Country VARCHAR(4),
+ localname VARCHAR(300),
+ CONSTRAINT ProvlocalnameKey PRIMARY KEY (Country, Province));
+
+CREATE TABLE Citypops
+(City VARCHAR(50),
+ Country VARCHAR(4),
+ Province VARCHAR(50),
+ Year DECIMAL CONSTRAINT CityPopsYear
+   CHECK (Year >= 0),
+ Population DECIMAL CONSTRAINT CityPopsPop
+   CHECK (Population >= 0),
+ CONSTRAINT CityPopKey PRIMARY KEY (Country, Province, City, Year));
+
+CREATE TABLE Cityothername
+(City VARCHAR(50),
+ Country VARCHAR(4),
+ Province VARCHAR(50),
+ othername VARCHAR(50),
+ CONSTRAINT CityOthernameKey PRIMARY KEY (Country, Province, City, othername));
+
+CREATE TABLE Citylocalname
+(City VARCHAR(50),
+ Country VARCHAR(4),
+ Province VARCHAR(50),
+ localname VARCHAR(300),
+ CONSTRAINT CitylocalnameKey PRIMARY KEY (Country, Province, City));
+
+CREATE TABLE Continent
+(Name VARCHAR(20) CONSTRAINT ContinentKey PRIMARY KEY,
+ Area DECIMAL(10));
+
+CREATE TABLE borders
+(Country1 VARCHAR(4),
+ Country2 VARCHAR(4),
+ Length DECIMAL 
+   CHECK (Length > 0),
+ CONSTRAINT BorderKey PRIMARY KEY (Country1,Country2) );
+
+CREATE TABLE encompasses
+(Country VARCHAR(4) NOT NULL,
+ Continent VARCHAR(20) NOT NULL,
+ Percentage DECIMAL,
+   CHECK ((Percentage > 0) AND (Percentage <= 100)),
+ CONSTRAINT EncompassesKey PRIMARY KEY (Country,Continent));
+
+CREATE TABLE Organization
+(Abbreviation VARCHAR(12) Constraint OrgKey PRIMARY KEY,
+ Name VARCHAR(100) NOT NULL,
+ City VARCHAR(50) ,
+ Country VARCHAR(4) , 
+ Province VARCHAR(50) ,
+ Established DATE,
+ CONSTRAINT OrgNameUnique UNIQUE (Name));
+
+CREATE TABLE isMember
+(Country VARCHAR(4),
+ Organization VARCHAR(12),
+ Type VARCHAR(60) DEFAULT 'member',
+ CONSTRAINT MemberKey PRIMARY KEY (Country,Organization) );
+
+CREATE TYPE GeoCoord AS
+(Latitude DECIMAL,
+ Longitude DECIMAL);
+
+
+CREATE TABLE Mountain
+(Name VARCHAR(50) CONSTRAINT MountainKey PRIMARY KEY,
+ Mountains VARCHAR(50),
+ Elevation DECIMAL,
+ Type VARCHAR(10),
+ Coordinates GeoCoord CONSTRAINT MountainCoord
+     CHECK (((Coordinates).Latitude >= -90) AND 
+            ((Coordinates).Latitude <= 90) AND
+            ((Coordinates).Longitude > -180) AND
+            ((Coordinates).Longitude <= 180)));
+
+CREATE TABLE Desert
+(Name VARCHAR(50) CONSTRAINT DesertKey PRIMARY KEY,
+ Area DECIMAL,
+ Coordinates GeoCoord CONSTRAINT DesCoord
+     CHECK (((Coordinates).Latitude >= -90) AND 
+            ((Coordinates).Latitude <= 90) AND
+            ((Coordinates).Longitude > -180) AND
+            ((Coordinates).Longitude <= 180)));
+
+CREATE TABLE Island
+(Name VARCHAR(50) CONSTRAINT IslandKey PRIMARY KEY,
+ Islands VARCHAR(50),
+ Area DECIMAL CONSTRAINT IslandAr check (Area >= 0),
+ Elevation DECIMAL,
+ Type VARCHAR(15),
+ Coordinates GeoCoord CONSTRAINT IslandCoord
+     CHECK (((Coordinates).Latitude >= -90) AND 
+            ((Coordinates).Latitude <= 90) AND
+            ((Coordinates).Longitude > -180) AND
+            ((Coordinates).Longitude <= 180)));
+
+CREATE TABLE Lake
+(Name VARCHAR(50) CONSTRAINT LakeKey PRIMARY KEY,
+ River VARCHAR(50),
+ Area DECIMAL CONSTRAINT LakeAr CHECK (Area >= 0),
+ Elevation DECIMAL,
+ Depth DECIMAL CONSTRAINT LakeDpth CHECK (Depth >= 0),
+ Height DECIMAL CONSTRAINT DamHeight CHECK (Height > 0),
+ Type VARCHAR(12),
+ Coordinates GeoCoord CONSTRAINT LakeCoord
+     CHECK (((Coordinates).Latitude >= -90) AND 
+            ((Coordinates).Latitude <= 90) AND
+            ((Coordinates).Longitude > -180) AND
+            ((Coordinates).Longitude <= 180)));
+
+CREATE TABLE Sea
+(Name VARCHAR(50) CONSTRAINT SeaKey PRIMARY KEY,
+ Area DECIMAL CONSTRAINT SeaAr CHECK (Area >= 0),
+ Depth DECIMAL CONSTRAINT SeaDepth CHECK (Depth >= 0));
+
+CREATE TABLE River
+(Name VARCHAR(50) CONSTRAINT RiverKey PRIMARY KEY,
+ River VARCHAR(50),
+ Lake VARCHAR(50),
+ Sea VARCHAR(50),
+ Length DECIMAL CONSTRAINT RiverLength
+   CHECK (Length >= 0),
+ Area DECIMAL CONSTRAINT RiverArea
+   CHECK (Area >= 0),
+ Source GeoCoord CONSTRAINT SourceCoord
+     CHECK (((Source).Latitude >= -90) AND 
+            ((Source).Latitude <= 90) AND
+            ((Source).Longitude > -180) AND
+            ((Source).Longitude <= 180)),
+ Mountains VARCHAR(50),
+ SourceElevation DECIMAL,
+ Estuary GeoCoord CONSTRAINT EstCoord
+     CHECK (((Estuary).Latitude >= -90) AND 
+            ((Estuary).Latitude <= 90) AND
+            ((Estuary).Longitude > -180) AND
+            ((Estuary).Longitude <= 180)),
+ EstuaryElevation DECIMAL,
+ CONSTRAINT RivFlowsInto 
+     CHECK ((River IS NULL AND Lake IS NULL)
+            OR (River IS NULL AND Sea IS NULL)
+            OR (Lake IS NULL AND Sea is NULL)));
+
+CREATE TABLE RiverThrough
+(River VARCHAR(50),
+ Lake  VARCHAR(50),
+ CONSTRAINT RThroughKey PRIMARY KEY (River,Lake) );
+
+CREATE TABLE geo_Mountain
+(Mountain VARCHAR(50) ,
+ Country VARCHAR(4) ,
+ Province VARCHAR(50) ,
+ CONSTRAINT GMountainKey PRIMARY KEY (Province,Country,Mountain) );
+
+CREATE TABLE geo_Desert
+(Desert VARCHAR(50) ,
+ Country VARCHAR(4) ,
+ Province VARCHAR(50) ,
+ CONSTRAINT GDesertKey PRIMARY KEY (Province, Country, Desert) );
+
+CREATE TABLE geo_Island
+(Island VARCHAR(50) , 
+ Country VARCHAR(4) ,
+ Province VARCHAR(50) ,
+ CONSTRAINT GIslandKey PRIMARY KEY (Province, Country, Island) );
+
+CREATE TABLE geo_River
+(River VARCHAR(50) , 
+ Country VARCHAR(4) ,
+ Province VARCHAR(50) ,
+ CONSTRAINT GRiverKey PRIMARY KEY (Province ,Country, River) );
+
+CREATE TABLE geo_Sea
+(Sea VARCHAR(50) ,
+ Country VARCHAR(4)  ,
+ Province VARCHAR(50) ,
+ CONSTRAINT GSeaKey PRIMARY KEY (Province, Country, Sea) );
+
+CREATE TABLE geo_Lake
+(Lake VARCHAR(50) ,
+ Country VARCHAR(4) ,
+ Province VARCHAR(50) ,
+ CONSTRAINT GLakeKey PRIMARY KEY (Province, Country, Lake) );
+
+CREATE TABLE geo_Source
+(River VARCHAR(50) ,
+ Country VARCHAR(4) ,
+ Province VARCHAR(50) ,
+ CONSTRAINT GSourceKey PRIMARY KEY (Province, Country, River) );
+
+CREATE TABLE geo_Estuary
+(River VARCHAR(50) ,
+ Country VARCHAR(4) ,
+ Province VARCHAR(50) ,
+ CONSTRAINT GEstuaryKey PRIMARY KEY (Province, Country, River) );
+
+CREATE TABLE mergesWith
+(Sea1 VARCHAR(50) ,
+ Sea2 VARCHAR(50) ,
+ CONSTRAINT MergesWithKey PRIMARY KEY (Sea1, Sea2) );
+
+CREATE TABLE located
+(City VARCHAR(50) ,
+ Province VARCHAR(50) ,
+ Country VARCHAR(4) ,
+ River VARCHAR(50),
+ Lake VARCHAR(50),
+ Sea VARCHAR(50) );
+
+CREATE TABLE locatedOn
+(City VARCHAR(50) ,
+ Province VARCHAR(50) ,
+ Country VARCHAR(4) ,
+ Island VARCHAR(50) ,
+ CONSTRAINT locatedOnKey PRIMARY KEY (City, Province, Country, Island) );
+
+CREATE TABLE islandIn
+(Island VARCHAR(50) ,
+ Sea VARCHAR(50) ,
+ Lake VARCHAR(50) ,
+ River VARCHAR(50) );
+
+CREATE TABLE MountainOnIsland
+(Mountain VARCHAR(50),
+ Island   VARCHAR(50),
+ CONSTRAINT MountainIslKey PRIMARY KEY (Mountain, Island) );
+
+CREATE TABLE LakeOnIsland
+(Lake    VARCHAR(50),
+ Island  VARCHAR(50),
+ CONSTRAINT LakeIslKey PRIMARY KEY (Lake, Island) );
+
+CREATE TABLE RiverOnIsland
+(River   VARCHAR(50),
+ Island  VARCHAR(50),
+ CONSTRAINT RiverIslKey PRIMARY KEY (River, Island) );
+
+CREATE TABLE Airport
+(IATACode VARCHAR(3) PRIMARY KEY,
+ Name VARCHAR(100) ,
+ Country VARCHAR(4) ,
+ City VARCHAR(50) ,
+ Province VARCHAR(50) ,
+ Island VARCHAR(50) ,
+ Latitude DECIMAL CONSTRAINT AirpLat
+   CHECK ((Latitude >= -90) AND (Latitude <= 90)) ,
+ Longitude DECIMAL CONSTRAINT AirpLon
+   CHECK ((Longitude >= -180) AND (Longitude <= 180)) ,
+ Elevation DECIMAL ,
+ gmtOffset DECIMAL );

# 2025-11-11 11:52:27.530378
+select * from citylocalname;

# 2025-11-11 12:21:08.081348
+update kunde set plz = plz + 50
+select * from kunde;

# 2025-11-11 12:21:24.989976
+update kunde set plz = plz + 50;

# 2025-11-11 12:21:35.499451
+select * from kunde;

# 2025-11-11 12:34:55.226041
+update kunde set plz = plz + 50
+select * from kunde;

# 2025-11-11 12:48:33.656171
+\q

# 2025-11-27 09:48:03.007050
+\!

# 2025-11-27 09:48:05.524171
+\q