Not does not work in @linq or @select

[lassepe]

Currently, it seems like one can not use the Not selector in @linq or @select queries.

For example,

df = DataFrame(x=rand(3), y=rand(3))
@linq df |> select(Not(:x)) # <-- does not work
@select(df, Not(:x)) # <-- does not work

does not work as :x is replaced with the values of the :x column.

Instead one needs to escape :x in the Not call.

@linq df |> select(Not(^(:x)))
# or...
@select(df, Not(^(:x)))

Is this the desired behavior? If so, it may need to be documented (is it?). Are there any cases in which replacing a symbol with the column data is needed in a call to select?

[pdeffebach]

Thanks for the bug report. This is indeed not desired behavior.

It will be fixed in upcoming versions of DataFramesMeta. In the meantime I have created #151 to make users informed of this.

[pdeffebach]

Marking as 1.X. This is definitely a high priority feature, but it isn't breaking so doesn't need to be added in 1.0.

[pdeffebach]

Closed for consolidation with #283