Generate UID
===========

This node Generates a new column with unique Index/Value for each row in the Dataset for each partition. Each Partition starts a new range.

Type
--------- 

transform

Class
--------- 

fire.nodes.etl.NodeGenerateUID

Fields
--------- 

.. list-table::
      :widths: 10 5 10
      :header-rows: 1

      * - Name
        - Title
        - Description
      * - outputCol
        - UID Column Name
        - UID column name


Details
-------
Generate UID Node Details
+++++++++++++++


This node Generates UID value for each row and adds it as a new column. UID value generated contains unique Index/Value for each row.



Input
+++++++++++++++


* UID COLUMN NAME :- Enter name of the column to list the generated UID values in the outgoing Dataframe.


Output
+++++++++++++++

* New output column would be added to the Outgoing Dataframe listing the generated UID values for each row.


Examples
-------
Generate UID Node Examples
+++++++++++++++



Incoming Dataframe
+++++++++++++++


In this example we have considered an Incoming Dataframe with following rows:


::

    PRD_CD    |    PRD_NAME          |    LIST_PRICE    |    TAX_AMT    |    DISCOUNT
    --------------------------------------------------------------------------------------
    P01       |    DRILL MACHINE     |    1000.0        |    100.0      |    50.0
    P02       |    WEIGHING MACHINE  |    1500.0        |    200.0      |    150.0
    P03       |    HAMMER            |    100.0         |    10.0       |    5.0



Generate UID Node Configuration And Output
+++++++++++++++


GenerateUID node is configured to generate UID for each row and add it as a new column [UID_VAL]. 

Outgoing Dataframe would be created as below with new column [UID_VAL] added to it:


::

    PRD_CD    |    PRD_NAME          |    LIST_PRICE    |    TAX_AMT    |    DISCOUNT    |    UID_VAL
    ------------------------------------------------------------------------------------------------------
    P01       |    DRILL MACHINE     |    1000.0        |    100.0      |    50.0        |    0
    P02       |    WEIGHING MACHINE  |    1500.0        |    200.0      |    150.0       |    1
    P03       |    HAMMER            |    100.0         |    10.0       |    5.0         |    2