sql，SELECT column1, COUNT(*)，FROM table_name，GROUP BY column1，HAVING COUNT(*) > 1;，``sql，SELECT column1, COUNT(*)，FROM table_name，GROUP BY column1，HAVING COUNT(*) > 1;，``sql，SELECT column1, COUNT(*) as count，FROM table_name，GROUP BY column1，HAVING count > 1;，``sql，SELECT column1, column2, COUNT(*)，FROM table_name，GROUP BY column1, column2，HAVING COUNT(*) > 1;，``GROUP BY 和 HAVING 子句组合来识别重复行。Powered By Z-BlogPHP 1.7.3
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