See the first example in:
http://www.w3schools.com/sql/sql_func_count.asp
On Wed, Jun 22, 2016 at 9:21 AM, Jakub Dubovsky <
spark.dubovsky.ja...@gmail.com> wrote:
> Hey Ted,
>
> thanks for reacting.
>
> I am refering to both of them. They both take column as parameter
> regardless of its type. Intuition here is that count should take no
> parameter. Or am I missing something?
>
> Jakub
>
> On Wed, Jun 22, 2016 at 6:19 PM, Ted Yu <yuzhih...@gmail.com> wrote:
>
>> Are you referring to the following method in
>> sql/core/src/main/scala/org/apache/spark/sql/functions.scala :
>>
>> def count(e: Column): Column = withAggregateFunction {
>>
>> Did you notice this method ?
>>
>> def count(columnName: String): TypedColumn[Any, Long] =
>>
>> On Wed, Jun 22, 2016 at 9:06 AM, Jakub Dubovsky <
>> spark.dubovsky.ja...@gmail.com> wrote:
>>
>>> Hey sparkers,
>>>
>>> an aggregate function *count* in *org.apache.spark.sql.functions*
>>> package takes a *column* as an argument. Is this needed for something?
>>> I find it confusing that I need to supply a column there. It feels like it
>>> might be distinct count or something. This can be seen in latest
>>> documentation
>>> <http://spark.apache.org/docs/latest/api/scala/index.html#org.apache.spark.sql.functions$>
>>> .
>>>
>>> I am considering filling this in spark bug tracker. Any opinions on this?
>>>
>>> Thanks
>>>
>>> Jakub
>>>
>>>
>>
>
