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MySQL Index Extensions

InnoDB automatically extends each secondary index by appending the primary key columns to it. Consider this table definition: i1 INT NOT NULL DEFAU.

【数据存储与数据库】  【mysql】  【innodb】  【BY】  【index】  【Create】  【IT】   点击查看原文>

RocksDB Write Prepared Policy

--- title: MySQL · RocksDB · Write Prepared Policy author: 张远 ---

# 背景 早期RocksDB TransactionDB将事务的更新操作都缓存在WriteBatch中,事务提交时才写WAL和memtable。RocksDB支持二阶段提交(2PC)后,在prepare阶段写WAL, WriteBatch写memt

【数据存储与数据库】  【mysql】  【阿里技术协会】  【Commit】  【IT】  【存储】   …

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mysql8 内存优化配置

mysql8 内存优化配置

服务器配置: 阿里云:windows 2008 server 2核8G,运行mysql和tomcat服务 my.ini配置如下,欢迎指正。 # Other default tuning values # MySQL Server Instance Configurat.

【mysql】  【innodb】  【LOG】  【配置】  【Cache】  【Server】  【index】   …

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docker创建mysql

版权声明:本文为博主原创文章,未经博主允许不得转载。 https://blog.csdn.net/qq_34173549/article/details/80426717

 do...

【docker】  【mysql】  【容器】  【Create】  【IT】  【Blog】  【Bash】   点击查看原文>

MySQL 5.7 内部临时表

本文研究了在没有写查询的情况下,InnoDB行插入时,因内部临时表的问题而发生性能尖刺的情形。 In this blog post, I investigate a case of spiking InnoDB Rows inserted in the absence of a write query, and find internal temporary tables to be the culprit. 事情发生在我研究一个客户的案例时,在”InnoDB行插入“指标图上,发现了从1k行每秒激增到6K行的尖刺,但却无法和其他活动或者现象连接起来,PMM监控图形上也有同样的反映。

【mysql】  【innodb】  【性能】  【磁盘】   …

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13.14. ERROR 1290 (HY000): The MySQL server is running with the --secure-file-priv option so it cannot execute this statement

MySQL 不允许向 secure_file_priv 意外的目录导出文件。 mysql> SELECT * FROM `order` INTO OUTFILE '/tmp/order.txt'; ERROR 1290 (HY000): The MySQL server is running...

【mysql】  【Server】  【variables】  【IT】   点击查看原文>

72.14. ERROR 1290 (HY000): The MySQL server is running with the --secure-file-priv option so it cannot execute this statement

MySQL 不允许向 secure_file_priv 意外的目录导出文件。 mysql> SELECT * FROM `order` INTO OUTFILE '/tmp/order.txt'; ERROR 1290 (HY000): The MySQL server is running...

【mysql】  【Server】  【variables】  【IT】   点击查看原文>

61.14. ERROR 1290 (HY000): The MySQL server is running with the --secure-file-priv option so it cannot execute this statement

MySQL 不允许向 secure_file_priv 意外的目录导出文件。 mysql> SELECT * FROM `order` INTO OUTFILE '/tmp/order.txt'; ERROR 1290 (HY000): The MySQL server is running...

【mysql】  【Server】  【variables】  【IT】   点击查看原文>

35.14. ERROR 1290 (HY000): The MySQL server is running with the --secure-file-priv option so it cannot execute this statement

MySQL 不允许向 secure_file_priv 意外的目录导出文件。 mysql> SELECT * FROM `order` INTO OUTFILE '/tmp/order.txt'; ERROR 1290 (HY000): The MySQL server is running...

【mysql】  【Server】  【variables】  【IT】   点击查看原文>

31.14. ERROR 1290 (HY000): The MySQL server is running with the --secure-file-priv option so it cannot execute this statement

MySQL 不允许向 secure_file_priv 意外的目录导出文件。 mysql> SELECT * FROM `order` INTO OUTFILE '/tmp/order.txt'; ERROR 1290 (HY000): The MySQL server is running...

【mysql】  【Server】  【variables】  【IT】   点击查看原文>

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