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旺仔米苏
2024-06-19
Mysql中表student_table(id,name,birth,sex),name字段值存在重复,查询name重复的记录明细,比如'张三'、'李四'各重复2次,则结果是4条。如下SQL错误的是()?C A select t2.* from (select * from (select name,count(*) as c1 from student_table GROUP BY name ) t1where c1 > 1)t3left join student_table t2 on t3.name = t2.name; B select t2.* from (select name,count(*) as c1 from student_table GROUP BY name having c1 > 1) t1 left join student_table t2on t1.name = t2.name; C select t2.* ,t1.*from (select name,count(*) as c1 from student_table GROUP BY name ) t1 left join student_table t2on t1.name = t2.nameand c1 > 1; D select t2.* from (select name,count(*) as c1 from student_table GROUP BY name ) t1 left join student_table t2on t1.name = t2.namewhere c1 > 1;
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