SELECT
用GROUP BY
子句做一个。假设 name 是您要在其中查找重复项的列:
SELECT name, COUNT(*) c FROM table GROUP BY name HAVING c > 1;
在MySQL中寻找重复值
SELECT
用GROUP BY
子句做一个。假设 name 是您要在其中查找重复项的列:
SELECT name, COUNT(*) c FROM table GROUP BY name HAVING c > 1;