一个临时表可以有3种，#是最常用的.这是一个仅存在于当前会话中的临时表.与此等效的是 @，一个声明的表变量.这具有较少的功能"(如索引等)，并且也仅用于当前会话.## 与 # 相同，但范围更广，因此您可以在同一会话中或其他存储过程中使用它.

A temporary table can have 3 kinds, the # is the most used. This is a temp table that only exists in the current session. An equivalent of this is @, a declared table variable. This has a little less "functions" (like indexes etc) and is also only used for the current session. The ## is one that is the same as the #, however, the scope is wider, so you can use it within the same session, within other stored procedures.

您可以通过多种方式创建临时表:

You can create a temp table in various ways:

declare @table table (id int)
create table #table (id int)
create table ##table (id int)
select * into #table from xyz