常用函数 常见关键字

site:docs.oracle.com sql functions

--聚合函数

site:docs.oracle.com group by function

site:docs.oracle.com GROUP BY clause

site:docs.oracle.com WHERE Clause

site:docs.oracle.com ORDER BY clause

site:docs.oracle.com rownum

--列转行

site:docs.oracle.com listagg

site:docs.oracle.com table dual

site:docs.oracle.com select

site:docs.oracle.com v$version

site:docs.oracle.com JOIN operations