MySQL Enterprise Edition Casi di studio Moro Hub Drives Green Digital Transformation Excellence with MySQL Enterprise Edition Bank Leumi Enhances Digital Banking and Drives innovation with MySQL Enterprise Edition OneSource Virtual boosts performance by 70% by migrating from Microsoft SQL Server to MySQ...
SELECT UUID();//c2cb8f66-351f-11e7-b3ed-00163e0429b6SELECT REPLACE(UUID(), '-', '');//将'-'替换掉 在MySQL 的 UUID() 函数中,前三组数字从时间戳中生成,第四组数字暂时保持时间戳的唯一性, 第五组数字是一个 IEEE 802 节点标点值,保证空间唯一。 使用UUID() 函数,可以生成时间、空间上都...
Hi jiu chu: I think that the singularity phenomenon is related to FTS(full-text search) and has nothing to do with semijoin. For the test case(fromhttps://bugs.mysql.com/bug.php?id=47930): mysql> CREATE TABLE t1 (a int) ENGINE = InnoDB; mysql> INSERT INTO t1 VALUES (1), (2)...
Different RDBMSs have different dialects of SQL. Different versions of MySQL also support different features of SQL. In order to help users write SQL that is compatible across DBMSs and different versions of MySQL, there are special comments that look like comments to other DBMSs but as SQL t...
We still get the same results. Do note, that the performance for even this type of SQL statements depends a lot on how you have configured MySQL server. We configure our servers in an optimal manner. Configuring the server properly is fully described in our Reference Manual. Can't repeat....
Hi all, I converted a MySQL db to MsSQL db. And 190mb MySQL db become 700mb MsSQL db. Then shrink MsSQL db and now it is 500mb. What is the reason behind this huge difference? Why MsSQL db with same data has 2x more space in hdd?
Check whether the sql_mode values of the source and destination databases are the same. If they are different, the migration may fail. You are advised to change them to t
解决mysql8报错:ERROR 1410 (42000): You are not allowed to create a user with GRANT,程序员大本营,技术文章内容聚合第一站。
* Clients wishing to avoid the aforementioned race condition MAY use new syntax that submits both connection ID and connect-timestamp, either as KILL STARTED AT or the equivalent mysql_kill_safe(MYSQL *, id, timestamp) * This will uniquely identify or current or historic connection throughout...
Examples of relational databases include SQL Server, Azure SQL, MySQL, PostgreSQL, and MariaDB. Non-relational databases Non-relational databases, store unstructured or semi-structured data. They don't use tables with columns and rows the way that relational databases do. Instead, they use a st...