T Sql 简明教程
T-SQL - Overview
在 20 世纪 70 年代，IBM 开发了一种名为“SEQUEL”的结构化英语查询语言，后来 SEQUEL 被重新命名为“SQL”，即结构化查询语言。
In 1970’s the product called 'SEQUEL', structured English query language, developed by IBM and later SEQUEL was renamed to 'SQL' which stands for Structured Query Language.
1986 年，SQL 获得 ANSI（美国国家标准协会）的批准，1987 年，它获得 ISO（国际标准组织）的批准。
In 1986, SQL was approved by ANSI (American national Standards Institute) and in 1987, it was approved by ISO (International Standards Organization).
SQL 是一种结构化查询语言，是所有 RDBMS 产品的通用数据库语言。不同的 RDBMS 产品供应商为自己的 RDBMS 产品扩展了 SQL，开发了自己的数据库语言。
SQL is a structure query language which is a common database language for all RDBMS products. Different RDBMS product vendors have developed their own database language by extending SQL for their own RDBMS products.
T-SQL 代表事务结构查询语言，它是 Microsoft 产品，是 SQL 语言的扩展。
T-SQL stands for Transact Structure Query Language which is a Microsoft product and is an extension of SQL Language.