摘要:
与大多数语言一样,SQL语言也有一个执行顺序,只是在大多数编程语言中,代码是按照编写顺序来处理的,而在SQL中则不是,下图为SQL 执行顺序。(5) SELECT ( 5-2 ) [ ALL | DISTINCT ] (5- 3) [TOP ( expression ) [PERCENT] [ WITH TIES ] (5- 1) --[ INTO new_table ](1) FROM ( 1-J ) join on |(1- A) apply as |(1- P) PIVOT () as ... 阅读全文