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1. www.geeksforgeeks.org › videos › sql-query-to-getSQL Query to Get the Latest Record from the Table - GeeksforGeeks

   www.geeksforgeeks.org › videos › sql-query-to-get

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   1 day ago · Write the SQL Query: Use an SQL query that orders the records by the date or timestamp column in descending order and limits the result to the first row. SQL Query Example. To get the latest record from a table (e.g., your_table_name) based on a timestamp column (e.g., created_at), you can use a query like the following:

2. Videos

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     5:48

     youtube.com

     SQL Tutorial #22 - SQL LIMIT | SQL TOP | SQL FETCH FIRST Clause

     19 May 2022

     15.7K views

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     0:30

     youtube.com

     How to use limit in SQL | Order by with Limit in SQL

     3 Aug 2023

     881 views

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     4:48

     youtube.com

     SQL Part 10 - how to apply LIMIT query in SQL | why and when to apply LIMIT Query in PostgreSQL

     25 Sep 2022

     4.7K views

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3. intellipaat.com › blog › tutorialTriggers in SQL Server - A Beginner's Guide - Intellipaat

   intellipaat.com › blog › tutorial

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   3 hours ago · Unfortunately, SQL Server doesn’t allow you to set up constraints between objects in different databases, but you can use Triggers to simulate the behavior of constraints. Triggers are useful for firing specific events whenever data is added, updated, or deleted.

4. www.shiwaiyun.com › article › post如何优化MySQL数据库的语句以提高性能？ - 世外云文章资讯

   www.shiwaiyun.com › article › post

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   3 hours ago · 优化MySQL数据库语句的方法包括：确保合理使用索引，避免全表扫描；减少查询中的JOIN操作，特别是大表之间的JOIN；优化数据访问模式，例如使用LIMIT分页查询；避免在WHERE子句中使用函数或复杂的表达式；以及定期进行数据库维护和清理工作。. 在优化MySQL数据 ...

5. blog.csdn.net › 2301_81784283 › articleMYSQL(SQL优化)-CSDN博客

   blog.csdn.net › 2301_81784283 › article

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   1 day ago · 5.limit优化. limit分页查询. 一个常见又非常头疼的问题就是 limit 2000000,10 ，此时需要MySQL排序前2000010记录，仅仅返回2000000 - 2000010 的记录，其他记录丢弃，查询排序的代价非常大。. 优化思路:一般分页查询时，通过创建覆盖索引能够比较好地提高性能，可以通过 ...

6. ycraah.tistory.com › 120[MySQL] DELETE FROM

   ycraah.tistory.com › 120

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   1 day ago · DELETE는 행 단위로 삭제를 한다. DELETE [ LOW_PRIORITY ] [ QUICK ] [ IGNORE ] FROM table[WHERE conditions][ORDER BY expression [ ASC | DESC ]][LIMIT number_rows]; 만약 WHERE문이 생략되면 전체 데이터를 삭제한다. 'Aamer'을 삭제하려면 다음과 같이 하면 된다. USE sqldb;DELETE FROM testTbl4 WHERE Fname = 'Aamer'; 만약 Aamer 중에서 상위 5건만 삭제하고 싶으면 LIMIT을 추가하면 된다. DELETE FROM testTbl4 WHERE Fname = 'Aamer' LIMIT 5 ...

7. leswing.tistory.com › 5[TIL] 2024/08/09

   leswing.tistory.com › 5

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   1 day ago · SQL 강의를 모두 완료하고 . 뭘 해볼까 하다가 SQL 코드카타를 해봤는데 . 뭔가 기존에 하던 방식으로도 query작성이 됐지만 작성 하던 도중 막힌 부분에서 해답을 보다가 . limit과 having을 봤는데 . 컬럼에서 동일한 값을 가지는 경우만 출력하는 query를 작성하는데

8. kangle.im › post › 67401MySQL单表千万数据求解思路：实现可持续运行的策略_后端开发_Kangle

   kangle.im › post › 67401

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   3 hours ago · 2、使用limit分页查询. 3、使用explain分析查询. 4、简化查询语句. 5、优化join操作. 系统架构与硬件升级. 1、使用缓存技术. 2、读写分离与主从复制. 3、硬件升级. 定期维护与监控. 1、定期执行optimize table. 2. 监控与分析. 结束语