535 B
535 B
SELECT
SELECT MatrNr, Name, Semester from Student
Spalte umbenennen
SELECT MatrNr AS InsassenNr from Student
Keine Duplikate
SELECT DISTINCT Semester AS Jahrgänge from Student
WHERE
SELECT * from Student WHERE Semester = 2
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SELECT * from Student s WHERE s.Semester = 2 AND s.Name='Byleth'
Anatomie einer WHERE Klausel
Vergleichsoperatoren: <,>,=,<=,>=,<>
BETWEEN
LIKE
IS NULL / IS NOT NULL
AND, OR, NOT
+,-,*,/
IN, NOT IN, \theta ANY, \theta ALL, EXISTS mit \theta = Vergleichsoperator