Count SQL Server User Created Functions based on Type

问题

I can count total user created functions in SQL Server using

SELECT COUNT(*)
FROM information_schema.routines
WHERE routine_type = 'FUNCTION'

But this returns all functions whether it be a scalar-valued function, an inline function or a table-valued function

Is there a way to obtain a count specific to the type of function? E.g. count inline functions only?

回答1:

This distinction you are after is specific to SQL Server and probably not covered by the information_schema standard. You need to look at system views for that:

select o.type_desc, count(*)
from sys.objects o
where o.type in ('AF', 'FN', 'FS', 'FT', 'IF', 'TF')
group by o.type_desc
order by o.type_desc;

Depending on the version of SQL Server you are using, the list of available object types might differ. Consult with the documentation for your version regarding that.

来源：https://stackoverflow.com/questions/62688406/count-sql-server-user-created-functions-based-on-type