15 lines
770 B
SQL
15 lines
770 B
SQL
# Load Tables
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CREATE TABLE IF NOT EXISTS students FROM TBL FILE 'test/students.tbl';
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CREATE TABLE IF NOT EXISTS test FROM TBL FILE 'test/lin_xxs.tbl';
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CREATE TABLE IF NOT EXISTS companies FROM TBL FILE 'test/tables/companies.tbl';
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CREATE TABLE IF NOT EXISTS employees FROM TBL FILE 'test/tables/employees.tbl';
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# SELECT (1)
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SELECT * FROM students;
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# SELECT (2)
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SELECT name, city, grade FROM (SELECT * FROM students WHERE city = 'Potsdam') t1 WHERE grade <= 1.5 OR grade >= 3.5;
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# GROUP
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SELECT city, AVG(grade) AS average|, MIN(grade) AS best, MAX(grade) AS worst FROM students GROUP BY city;
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# UNION
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SELECT * FROM students WHERE grade = 1.3 UNION SELECT * FROM students WHERE grade = 3.7;
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# JOIN
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SELECT * FROM companies JOIN employees ON company_id = employee_company_id |