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SQL samenvatting (SELECT, INSERT, UPDATE, DELETE, LIKE, DISTINCT, JOIN, OR, AND, LEFT JOIN, RIGHT JOIN, AUTO JOIN, subquery, functies, GROUP BY, HAVING en gecorreleerde subquery)
SQL samenvatting (SELECT, INSERT, UPDATE, DELETE, LIKE, DISTINCT, JOIN, OR, AND, LEFT JOIN, RIGHT JOIN, AUTO JOIN, subquery, functies, GROUP BY, HAVING en gecorreleerde subquery)
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