How to create external table for external source azure sql database table

----connecting to the external source sql database
use sai
CREATE MASTER KEY ENCRYPTION BY PASSWORD = 'password123';
-----run it
CREATE DATABASE SCOPED CREDENTIAL sqls
WITH IDENTITY = 'kumar', SECRET = '12345';
--------------run it
CREATE EXTERNAL DATA SOURCE sqld
WITH ( LOCATION
= 'sqlserver://sai.database.windows.net' ----sai.database.windows.net = servername
CREDENTIAL = sqls );
----- run it
CREATE EXTERNAL TABLE em(
Id int,
name [varchar](255) NULL,
salary int,
df int,
ddf decimal
) WITH (
LOCATION='sai.dbo.sai'--database.schema.tablename
DATA_SOURCE=sqld
);