This is my insert overwrite statement:

```
INSERT OVERWRITE DIRECTORY /myworkspace/output/f_name/20150714
select concat_ws('|',
coalesce(A,''),
coalesce(B,''),
coalesce(C,''),
coalesce(D,'')
)
FROM TABLE_A;

```

I am getting the output as:

> 
> a|b|c|d
> 
> 
> 

But I want the output as:

> 
> "a"|"b"|"c"|"d"
> 
> 
> 

I am not able to figure it out.