SQL is a standard language for storing, manipulating and retrieving data in databases. Our SQL tutorial will teach you how to use SQL in: MySQL, SQL Server, MS Access, Oracle, Sybase, Informix, Postgres, and other database systems.
SQL( i / ˈ ɛ s k juː ˈ ɛ l / [5] 或 i / ˈ s iː k w ə l / [6] ,Structured Query Language,结构化查询语言 [7] [8] [9] [10] )是一种特定目的程式语言,用于管理关系数据库管理系统(RDBMS),或在关系流数据管理系统(RDSMS)中进行流处理。