DECLARE @sql_command NVARCHAR(MAX);
DECLARE @parameter_list NVARCHAR(MAX);
DECLARE @last_names TABLE ( last_name NVARCHAR(50) );
SELECT  @sql_command = ‘
SELECT DISTINCT
FirstName
FROM Person.Person
WHERE LastName IN (SELECT last_name FROM @last_names)‘
EXEC sp_executesql @sql_command;

CREATE TYPE last_name_table AS TABLE
(last_name NVARCHAR(50));
GO
--DROP TYPE last_name_table
DECLARE @sql_command NVARCHAR(MAX);
DECLARE @parameter_list NVARCHAR(MAX);
DECLARE @first_name_calling_sql NVARCHAR(50) = ‘Edward‘;
DECLARE @last_names AS last_name_table;



SELECT  @sql_command = ‘
INSERT  INTO @last_names
        ( last_name
        )
        SELECT  LastName
        FROM    Person.Person
        WHERE   FirstName = @first_name_calling_sql;

SELECT DISTINCT
FirstName
FROM Person.Person
WHERE LastName IN (SELECT last_name FROM @last_names)
‘
SELECT  @parameter_list = ‘@first_name_calling_sql NVARCHAR(50), 
@last_names last_name_table READONLY‘
EXEC sp_executesql @sql_command, @parameter_list, @first_name_calling_sql,@last_names;