这篇文章主要介绍了SQL 如何如何创建、更新和删除视图，文中讲解非常详细，示例代码帮助大家更好的理解和学习，感兴趣的朋友可以了解下 视图是可视化的表。 本章讲解如何创建、更新和删除视图。 SQL CREATE VIEW 语句 在 SQL 中，视图是基于 SQL 语句的结果集的 ...

The most important performance-tuning technique available is having the needed indexes created on the tables to ensure that the SQL Server database engine is able to get the data that it needs to as ...

The DICTIONARY tables component is specified in the FROM clause of a SELECT statement. DICTIONARY is a reserved libref for use only in PROC SQL. Data from DICTIONARY tables are generated at run time.

Note: The SQL procedure displays the variable labels as stored in the view. However, because you are referencing a view descriptor, you must use the SAS variable names in the WHERE clause, not the ...