In SQL interviews, success comes from a combination of mastering core concepts, consistent practice, and a calm, structured approach to solving problems. By understanding key SQL operations, optimizing your queries, and being prepared to tackle complex scenarios, you’ll be able to impress interviewe...
试卷作答记录表exam_record(uid用户ID, exam_id试卷ID, start_time开始作答时间, submit_time交卷时间, score得分): 题目练习记录表practice_record(uid用户ID, question_id题目ID, submit_time提交时间, score得分): 请找到【昵称以『牛客』开头『号』结尾】、【成就值在1200~2500之间】,且【最近一次】【活跃(...
device_id inner JOIN question_detail AS c ON b.question_id = c.question_id GROUP BY difficult_level ORDER BY correct_rate; 1.首先获取“浙江大学”的device_id。 2.根据表1获得的device_id从表2查询question_id,result。 3.根据表2获得的question_id从表3查询difficult_level。 4.SELECT语句查询第一...
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The obvious question is this: when is which method for doing dynamic SQL preferred? And it answered obviously with this best practice principle: Principle_6 For dynamic SQL, always use native dynamic SQL except when its functionality is insufficient; only then, use the DBMS_Sql API. For ...
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Arabic question mark Arduino and SQL Server Are there any Bitmap(ped) indexes in SQL Server? Are there MIN(A,B) or MAX(A,B) functions in SQL? Argument data type datetime is invalid for argument 3 of json_modify function Argument data type sql_variant is invalid for argument 1 of like...
Question on setting a TLS 1.2 value within a SSIS package when connecting to Vendor's URL using a Web Service Task Raise an error in ssis manually Re: How to store SQL UserName and Password into configruation Table? Read an integer variable into Script Component Task and write back to sam...