Use of {0} in Power Query

[shekhar_shres]

Hi have a code that gives me following table-

1. Code - Just Amended the source for Pic, Ignore the error

Table

The thing is I do not want it as table but as a blank list as follows:

3 - The requirement

So I add 1 more step to my query in Pic 1 as follows and everything works:

4. Added Code highlighted in step 1(added code in line 3)

I am getting what I want and happy but I have no idea what the added code is doing and no idea what am I doing. Can someone please temm me what the third line of my code is doing  Column1 = #"Term1End2021_DefinedName"{0}[Column1] 

Your explanation will be highly appreciated.

Thank you

[wdx223_Daniel · Accepted solution]

in your second step of  #"Term1End2021_DefinedName", you get a table.

#"Term1End2021_DefinedName"{0} get the first row of the table, it's a record

#"Term1End2021_DefinedName"{0}[Column1] get the field of Column1 of the record

[watkinnc · Accepted solution]

The first code returns type table--a table value that contains the value 44288 in [Column1]{0} which is Column1, first zero index row.

Your second code reaches into the field of the table with the [Column]{RowNumber} syntax placed after the table reference (by the way, {0}[Column] = [Column]{0}, but performance can differ.

You can also just right click on a value in a table, and click Drill Down to get just the value itself.

One more thing that I find useful to remember: any function that returns a table can make use of this syntax. For example:

=Table.SelectRows(TableName, each [Date] >= SomeDateValue)

returns a table, and so you can easily add a field reference:

= Table.SelectRows(TableName, each [Date] >= SomeDateValue){0}[Sales]

By the way, you could probably save yourself a step and add the {0}[Column1] right after [Data] at the end of your last step, before the comma.

--Nate

[wdx223_Daniel · Accepted solution]

in your second step of  #"Term1End2021_DefinedName", you get a table.

#"Term1End2021_DefinedName"{0} get the first row of the table, it's a record

#"Term1End2021_DefinedName"{0}[Column1] get the field of Column1 of the record