For a database developer, comparing the table data and schema is a very common task. I already shared few versions of it.
Most of the time, developers are comparing schemas between Production Server and Development Server.

In this post, I am sharing a script to compare the table schema using dm_exec_describe_first_result_set.

SQL Server: How to get the Table Column Differences?

SQL Server: Easy way to get the Table Difference For Data

Create sample tables:

CREATE TABLE tbl_A (ID INT, Name VARCHAR(100), Sub CHAR(5))
CREATE TABLE tbl_B (ID INT, Name VARCHAR(20), Sub VARCHAR(5), Grade INT)

Get the schema differences:

SELECT 
	tbl_A.name as tbl_A_ColumnName
	,tbl_B.name as tbl_B_ColumnName
	,tbl_A.system_type_name as tbl_A_Datatype
	,tbl_B.system_type_name as tbl_B_Datatype 
	,tbl_A.is_identity_column as tbl_A_is_identity
	,tbl_B.is_identity_column as tbl_B_is_identity  
	,tbl_A.is_nullable as tbl_A_is_nullable
	,tbl_B.is_nullable as tbl_B_is_nullable
FROM sys.dm_exec_describe_first_result_set (N'SELECT * FROM tbl_A', NULL, 0) tbl_A 
FULL OUTER JOIN  sys.dm_exec_describe_first_result_set (N'SELECT * FROM tbl_B', NULL, 0) tbl_B 
ON tbl_A.name = tbl_B.name 
GO

Result: