MySQL数据库可以通过以下几种方式实现去重:
示例:
SELECT DISTINCT column_name FROM table_name;
示例:
SELECT column_name FROM table_name GROUP BY column_name;
示例:
SELECT column_name FROM table_name GROUP BY column_name HAVING COUNT(*) = 1;
示例:
SELECT column_name FROM table_name WHERE column_name IN (SELECT column_name FROM table_name GROUP BY column_name HAVING COUNT(*) = 1);
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