M5_4 beispiel
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M5/beispiele/M5_4.sql
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M5/beispiele/M5_4.sql
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#a)
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CREATE OR REPLACE VIEW view_suppengerichte AS select * from gericht WHERE name LIKE '%suppe%';
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#b)
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CREATE OR REPLACE VIEW view_anmeldungen AS select name,anzahlanmeldungen from benutzer ORDER BY anzahlanmeldungen DESC;
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#c)
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CREATE OR REPLACE VIEW view_kategoriegerichte_vegetarisch AS select gericht.name as gericht_name, vegetarisch, kategorie.name as katergorie_name
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from gericht, kategorie
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WHERE vegetarisch = 1 ;
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