计算SQL Server中的列数

Question

有没有办法知道SQL中的列数,比如count()......？

Answer 1

单程

select count(*) from sys.columns 

另一个

select count(*) from information_schema.columns

底部没有系统表

靠桌子

select count(*),table_name from information_schema.COLUMNS
GROUP BY table_name

仅限表格

select count(*),c.table_name 
from information_schema.COLUMNS c
JOIN information_schema.tables t ON c.TABLE_NAME = t.TABLE_NAME
AND c.TABLE_Schema = t.TABLE_Schema
WHERE TABLE_TYPE = 'base table'  
GROUP BY c.table_name

只有意见

select count(*),c.table_name 
from information_schema.COLUMNS c
JOIN information_schema.tables t ON c.TABLE_NAME = t.TABLE_NAME
AND c.TABLE_Schema = t.TABLE_Schema
WHERE TABLE_TYPE = 'view'  
GROUP BY c.table_name

Answer 2

Select Count(*) From INFORMATION_SCHEMA.COLUMNS Where TABLE_NAME='YourTableName'