MySQL — a fast, reliable, scalable and easy-to-use open-source relational database system — is designed to handle mission-critical, heavy-load production applications. It is a common and easy-to-start database with low memory, disk and CPU utilization, managed by a relational database mana...
TRUNCATE TABLE(删除表) PostgreSQL TRUNCATE TABLEsupports more features like CASCADE, RESTART IDENTITY, CONTINUE IDENTITY, transaction-safe, etc.(对于移除表中的数据,delete是可以的,但是对于一个大表,truncate是更加有效的方式,因为truncate删除表中所有行的时候不需要扫表整个表) MySQL TRUNCATE TABLE does not ...
另外前两天有一个同学告知,他们单位SQL SERVER 被替换成 MYSQL ,OMG 这篇文字更的写,明明有 SQL SERVER 表兄弟 POSTGRESQL ,非要找 SQL SERVER 他二舅大伯三姨的儿媳妇 MYSQL 做替换的数据库,做这样决定的人,应该被开除。 问题的部分保留英文,为了部分同学,问题我做了简单注释 ——— 正文 PostgreSQL 和 SQL...
PostgreSQL Interview Questions PostgreSQL vs MySQL
What are the syntax differences between PostgreSQL and SQL Server? Compare PostgreSQL vs. MSSQL Server Syntax 中文:数据库SQL的一些前缀的比较 What are the data type differences between PostgreSQL and SQL Server? Compare data types in PostgreSQL vs. MSSQL ...
在VS2019项目内,引用Mysql.data.dll文件 注意,这里的Mysql.data.dll文件在我们刚刚安装的connector/net的内部文件夹下。 如果不记得安装在哪里,可使用 \(Everything\) 快速定位Mysql.data.dll的文件路径 第三种方法: 直接在Visual Studio内添加mysql方案包 ...
Postgres implements Multiversion Concurrency Control (MVCC) without read locks Postgres supports parallel query plans that can use multiple CPUs/cores Postgres can create indexes in a non-blocking way (through theCREATE INDEX CONCURRENTLYsyntax), and it can create partial indexes (for example, if you...
At the same time, MySQL is just an RDBMS (Relational Database Management System). PostgreSQL vs. Oracle Oracle is a proprietary database and one of the most adopted relational database management systems. It's been around since 1979, but its popularity has been decreasing, as we can see ...
Once you connect toa databaseusing thepsqlCLI, you can use PostgreSQL syntax to create and manage databases, schemas, and tables. The following steps show some of the most common operations in PostgreSQL. 1. Create a database with the following command: ...
介绍: 其他数据库向psotgresql迁移数据的工具,官方出品,包括 MySQL, MS SQL Server, SQL Azure, Oracle, MS Access.等. 《深度学习PostgreSQL》 介绍: 从安装到双机热备再到内核分析,内容丰富网盘提取密码fmby. 《Postgres CLI with autocompletion and syntax highlighting》 ...