Expression

Command	Description
dfr agg-groups	Creates an agg_groups expression.
dfr arg-where	Creates an expression that returns the arguments where expression is true.
dfr as	Creates an alias expression.
dfr col	Creates a named column expression.
dfr concat-str	Creates a concat string expression.
dfr count	Creates a count expression.
dfr datepart	Creates an expression for capturing the specified datepart in a column.
dfr expr-not	Creates a not expression.
dfr implode	Aggregates a group to a Series.
dfr is-in	Creates an is-in expression.
dfr lit	Creates a literal expression.
dfr max	Creates a max expression or aggregates columns to their max value.
dfr mean	Creates a mean expression for an aggregation or aggregates columns to their mean value.
dfr min	Creates a min expression or aggregates columns to their min value.
dfr otherwise	Completes a when expression.
dfr std	Creates a std expression for an aggregation of std value from columns in a dataframe.
dfr sum	Creates a sum expression for an aggregation or aggregates columns to their sum value.
dfr var	Create a var expression for an aggregation.
dfr when	Creates and modifies a when expression.