If you need a feature found in one but not the other, such as JSON_TABLE() in MySQL or MERGE() in PostgreSQL, then your choice has been made for you, maybe. JSON_TABLE() may make it into PG 17 in 2024 after being dropped at the last moment from PG 15. Or if you process a ...
This blog on What is PostgreSQL covers an introduction to PostgreSQL, its history, features, applications, advantages, and disadvantages of PostgreSQL.
PostgreSQL 正在高歌猛进,而 MySQL 却日薄西山,而 MySQL 却日薄西山,作为 MySQL 生态主要抗旗者的Percona也不得不悲痛地承认这一现实,连发了三篇《MySQL将何去何从》,《Oracle最终还是杀死了MySQL》,《Oracle还能挽救MySQL吗》,公开表达了对 MySQL 的失望与沮丧; Percona 的 CEOPeter Zaitsev也表示: 有了PostgreSQ...
What is PostgreSQL as a Service? PostgreSQL as a Service (PGaaS) is a specific form of Database as a Service (DBaaS) that enables users to easily create, manage, and use Postgres databases in the cloud. Various cloud service providers offer PGaaS options, including AWS with RDS ...
Ora2Pg is a free tool used to migrate an Oracle database to a PostgreSQL compatible schema. It connects your Oracle database, scan it automatically and extracts its structure or data, it then generates SQL scripts that you can load into PostgreSQL. - dar
I am very curious to know how to write the following join query forMySQLso it will perform as well asPostgreSQL. I never used PostgreSQL before now. I like MySQL and I always use it. However I was disappointed by its performance on this query and I installed PostgreSQL to compare. The ...
支持 多种数据库,MySql/SqlServer/PostgreSQL/Oracle/Sqlite; Packages FreeSql 提供了五种使用习惯,请根据实际情况选择团队合适的一种: 要么FreeSql,原始用法; 要么FreeSql.Repository,仓储+工作单元习惯; 要么FreeSql.DbContext,有点像efcore的使用习惯; 要么FreeSql.Connection.Extensions,有点像Dapper的使用习惯; ...
IBM Db2 is a relational DBMS, but it also offers a columnar option. Many database systems similarly qualify as multimodel through add-ons, including Oracle, PostgreSQL and MongoDB. Other products, such as Microsoft Azure Cosmos DB and MarkLogic, were developed specifically as multimodel databases...
It runs on database management software, such as MySQL, Oracle, DB2, or PostgreSQL. Other multitier architectures While three-tier architecture is easily the most widely adopted multitier application architecture, there are others that you might encounter in your work or your research. Two-tier...
Date: December 10, 2008 01:24PM mysql> explain select count( r.id_country ) from addresses a join range r on a.address between r.begin_num and r.end_num; +---+---+---+---+---+---+---+---+---+---+ | id | select_type | table | type | possible_keys | key | ...