38 lines
1.6 KiB
SQL
38 lines
1.6 KiB
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_big 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
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SELECT * FROM students WHERE grade <= 2.0;
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# SUB-SELECT
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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;
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# INSERT
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INSERT INTO students VALUES ('Max Mustermann', 10101, 'Musterhausen', 1.7);
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# CREATE
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CREATE TABLE IF NOT EXISTS test (v1 INTEGER, v2 INTEGER, v3 INTEGER);
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# INSERT/SELECT
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INSERT INTO test VALUES (1, 23, 45);|
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INSERT INTO test VALUES (1, 23, 45);
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INSERT INTO test VALUES (1, 23, 45);
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SELECT * FROM test;
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# CREATE/INSERT/SELECT
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CREATE TABLE IF NOT EXISTS test (v1 INTEGER, v2 INTEGER, v3 INTEGER);
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INSERT INTO test VALUES (1, 12, 43);
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SELECT * FROM test;
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#! GROUP
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SELECT AVG(grade) FROM (SELECT city, AVG(grade) FROM students GROUP BY city) t1
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#! UNION (kills hyrise)
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SELECT name FROM students WHERE grade > 2.0 UNION SELECT name FROM students
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#! UPDATE
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UPDATE companies SET company_id = 44 WHERE company_name = 'Microsoft';
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#! SELECT
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SELECT * FROM companies;
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#! SELECT Microsoft
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SELECT * FROM companies WHERE company_name = 'Microsoft'; |