mysql-慢sql优化
2021/12/28 2:14:41
本文主要是介绍mysql-慢sql优化,对大家解决编程问题具有一定的参考价值,需要的程序猿们随着小编来一起学习吧!
1.
SELECT PLAT_BATCH_CODE FROM t_fee_fact_record t WHERE t.SALES_CHANNEL = ? AND t.PAY_STATUS IN (?) AND t.FEE_STATUS != ? AND t.ISCLEAN = ? AND t.processing = ? AND TIMESTAMPDIFF(MINUTE, t.OPERATE_TIME, now()) >= ?
优化建议:
1).
t.FEE_STATUS != '1' 改成
AND t.FEE_STATUS in('0','2','3')
2).
java中计算TIMESTAMPDIFF(MINUTE, t.OPERATE_TIME, now())
2.
SELECT weixin_id FROM wcap_user_binding_rs WHERE check_status IS NULL ORDER BY bindingtime ASC LIMIT ?
优化建议:
check_status 改为默认空字符串
3.
这篇关于mysql-慢sql优化的文章就介绍到这儿,希望我们推荐的文章对大家有所帮助,也希望大家多多支持为之网!
- 2024-12-25如何部署MySQL集群资料:新手入门教程
- 2024-12-24MySQL集群部署资料:新手入门教程
- 2024-12-24MySQL集群资料详解:新手入门教程
- 2024-12-24MySQL集群部署入门教程
- 2024-12-24部署MySQL集群学习:新手入门教程
- 2024-12-24部署MySQL集群入门:一步一步搭建指南
- 2024-12-07MySQL读写分离入门:轻松掌握数据库读写分离技术
- 2024-12-07MySQL读写分离入门教程
- 2024-12-07MySQL分库分表入门详解
- 2024-12-07MySQL分库分表入门指南