Expression.Error: There were too many elements in the enumeration to complete the operation. Details

[Anonymous]

Hello. I have json files from Azure Blob Storage as a data source. In the files there are energy consumption values. I would like to only graph the power consumption over time. For this reason I deleted all the other values and ended up with this table:

Name                                       Value

power_mw	0
timestamp	2019-04-24T11:34:26.472475
power_mw	0
timestamp	2019-04-24T11:34:41.602568
power_mw	0
timestamp	2019-04-24T11:34:56.377102
power_mw	0
timestamp	2019-04-24T11:35:11.332657
power_mw	1843
timestamp	2019-04-24T11:35:26.430702
power_mw	1762
timestamp	2019-04-24T11:35:41.381805
power_mw	1787
timestamp	2019-04-24T11:35:56.333847
power_mw	4112
timestamp	2019-04-24T11:36:11.303751
power_mw	1596
timestamp	2019-04-24T11:36:26.403370
power_mw	2048
timestamp	2019-04-24T11:36:41.496519
power_mw	1630
timestamp	2019-04-24T11:36:56.302972
power_mw	0
timestamp	2019-04-24T11:37:11.417660
power_mw	0
timestamp	2019-04-24T11:37:26.375462
power_mw	0
timestamp	2019-04-24T11:37:41.471550

Since I only want to graph the power over time, I though I need to end up with a table with only two columns  (one for the timestamp and one for the power). I used the function "pivot column" and I selected "don't aggregate". This is the error I get. Can anyone please help? I am new to this. 

Expression.Error: There were too many elements in the enumeration to complete the operation.
Details:
    List

[v-juanli-msft]

Hi @Anonymous 

1.Keep the "Name" and "Value" columns in the sort order as your screenshot, then create a index column from 1

2. click on "Name", used the function "pivot column" and I selected "don't aggregate" for "Value" column

3. fill up for "timestamp", fill down for "power_mw"

4.remove index column, 

then click on "power_mw" and "timestamp" columns, remove duplicates columns,

reoder columns-drag column "timestamp" from right to left

Best Regards
Maggie

Community Support Team _ Maggie Li
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