Michael Chow

SQL general support for unnamed args in mutate, and summarize, etc..

1

Currently we don't try to use a representation of the siu expression to allow support for unnamed arguments in funcs like mutate and summarize. Could be useful, but doesn't seem...

Summarize should remove the right most variable in grouping

1

see `test_summarize_removes_1_grouping()`

would be useful to see a representation of the pipe...

Support kwargs in select verb (dply and sql)

4

Currently raises a NotImplementedError. One key decision here is where in resulting data kw vars should go. To be consistent with all other uses of select, I would say kwargs...

**Starts on 1** Pros: * consistent with SQL (and R) * saying the row number is 0 seems a bit unnatural Cons: * if a row number is the same...

do not allow mutating grouping columns

1

This should throw an error ``` from siuba.data import mtcars from siuba import _, group_by, transmute mtcars >> group_by(_.cyl) >> transmute(cyl = _.cyl + 1), ``` Instead does terrible things...

Spark passes all Backend tests

3

Edit: see this doc on functions supported by spark sql https://spark.apache.org/docs/2.3.1/api/sql/index.html

Let's try the dbplyr approach, which... * treats it largely as a sql source, using the default translator * allows `sparklyr` to implement custom S3 methods for `copy_to` and `collect`...