Comma Separated List of all columns in the Database (Tablename | Column_names...)

In SQL Server, I would like see Table_Name and all the Columns associated with that Table_Name in a database. So the Output should look like this:

      TABLE_NAME     COLUMN_NAME 

   1.开发者_运维技巧 Employee       Employee-id, Lastname, Firstname, Title...........
   2. Orders         Orderid, Order-date, shipped-date, delivery-date.......
   3. Products       Product-id, Product-name, supplier-id, category-id.....
   4. Suppliers      Supplier-id, Company-name, contact-name.......
   5. ............................................................
   6. ...................................................
      (So on....)

Is it possible to get the above results with WHILE LOOP or any other way? If YES, could you post the code.

Also, I tried to do this problem using a Temp Table:

 create table #hello
 (table_name1 Varchar(max))
  insert into #hello(table_name1)
  select table_name from information_schema.columns 
 GO

 create table #hello2
 (table_name2 varchar(max),column_name2 varchar(max))
  insert into #hello2(table_name2 ,column_name2)
  select table_name,column_name from information_schema.columns 
 GO

 select  a.table_name1,b.column_name from #hello a inner join
   information_schema.columns b
 on a.table_name1=b.table_name COLLATE Latin1_general_CI_AS
 order by table_name 
 GO      

I was successful in listing the columns Vertically but i couldn't get the comma separated list of columns.

---

Select TABLE_SCHEMA, TABLE_NAME
    , Stuff(
        (
        Select ', ' + C.COLUMN_NAME
        From INFORMATION_SCHEMA.COLUMNS As C
        Where C.TABLE_SCHEMA = T.TABLE_SCHEMA
            And C.TABLE_NAME = T.TABLE_NAME
        Order By C.ORDINAL_POSITION
        For Xml Path('')
        ), 1, 2, '') As Columns
From INFORMATION_SCHEMA.TABLES As T

As mentioned in comments, the above will include views. If you want to exclude views you can do the following:

Select T.TABLE_SCHEMA, T.TABLE_NAME
    , Stuff(
        (
        Select ', ' + C.COLUMN_NAME
        From INFORMATION_SCHEMA.COLUMNS As C
        Where C.TABLE_SCHEMA = T.TABLE_SCHEMA
            And C.TABLE_NAME = T.TABLE_NAME
        Order By C.ORDINAL_POSITION
        For Xml Path('')
        ), 1, 2, '') As Columns
From INFORMATION_SCHEMA.TABLES As T
    Left Join INFORMATION_SCHEMA.VIEWS As V
        On V.TABLE_SCHEMA = T.TABLE_SCHEMA
            And V.TABLE_NAME = T.TABLE_NAME
Where V.TABLE_NAME Is Null

---

select name as TABLE_NAME,
       STUFF(COLUMN_NAME, 1, 1, '') AS COLUMN_NAME
from sys.tables t
CROSS APPLY 
( 
        SELECT 
            ',' + name AS [text()] 
        FROM 
            sys.columns c
        WHERE 
            c.object_id = t.object_id
        FOR XML PATH('') 
    ) o (COLUMN_NAME)

---

Since your question mentions 'in a database', rather than use the information schema, I used the database:

select t.name, 
        STUFF ((
            select ',' + c.name
            from TEST_DB.sys.columns c
                join TEST_DB.sys.tables tt on tt.object_id = t.object_id and t.object_id = c.object_id
                join TEST_DB.sys.schemas s on tt.schema_id = s.schema_id
            order by t.name, c.column_id
            for xml path('')), 1, 1, '') as columns
from TEST_DB.sys.tables t
            where t.name = 'PutTableNameHere if you want to filter'

Leave the where clause out for all tables in a specific database.