Oracle查找function信息的方式汇总

-- 查看函数基本信息
select object_name, created, status, last_ddl_time
from user_objects
where object_type = 'function'
order by object_name;

-- 查看函数详情（包括参数、返回类型）
select object_name, procedure_name, overload, 
       argument, data_type, in_out
from user_arguments
where package_name is null
and object_name = '你的函数名';

-- 查看函数源代码
select text
from user_source
where name = '你的函数名'
and type = 'function'
order by line;

-- 查看所有可访问的函数
select owner, object_name, created, status
from all_objects
where object_type = 'function'
order by owner, object_name;

-- 查看特定函数的参数信息
select owner, object_name, argument_name, 
       data_type, in_out, position
from all_arguments
where package_name is null
and object_name = '函数名';

-- 查看oracle文档中的函数
desc dbms_metadata
desc dbms_lob
desc dbms_utility

-- 查看系统包中的函数
select distinct name, type
from all_source
where owner = 'sys'
and (upper(text) like '%function%' or type = 'package')
and name like 'dbms_%';

-- user_procedures: 用户的过程和函数
select object_name, procedure_name, aggregate, 
       parallel, deterministic
from user_procedures
where object_type = 'function';

-- all_procedures: 所有可访问的过程和函数
select owner, object_name, procedure_name
from all_procedures
where object_type = 'function';

-- 查看函数依赖关系
select name, type, referenced_name, referenced_type
from user_dependencies
where name = '你的函数名';

-- 使用describe命令
desc 函数名;  -- 注意：这只对某些对象有效

-- 查看函数编译错误
show errors function 函数名;

-- 查找源代码中包含特定文本的函数
select distinct name, type
from user_source
where upper(text) like '%特定文本%'
and type = 'function';

-- 使用dbms_metadata获取ddl
select dbms_metadata.get_ddl('function', '函数名', '用户名')
from dual;

select grantee, privilege, grantable
from user_tab_privs
where table_name = '函数名';

select 
    o.object_name,
    o.created,
    o.status,
    a.argument_name,
    a.data_type,
    a.in_out,
    a.position
from user_objects o
left join user_arguments a on o.object_name = a.object_name
where o.object_type = 'function'
and o.object_name = '&函数名'
order by a.position;

-- 函数依赖哪些对象
select referenced_name, referenced_type
from user_dependencies
where name = '函数名'
and type = 'function';

-- 哪些对象依赖此函数
select name, type
from user_dependencies
where referenced_name = '函数名';