Expression

CommandDescription
dfr agg-groupscreates an agg_groups expression
dfr arg-whereCreates an expression that returns the arguments where expression is true.
dfr asCreates an alias expression.
dfr colCreates a named column expression.
dfr concat-strCreates a concat string expression.
dfr countcreates a count expression
dfr datepartCreates an expression for capturing the specified datepart in a column.
dfr expr-notcreates a not expression
dfr implodeAggregates a group to a Series
dfr is-inCreates an is-in expression.
dfr litCreates a literal expression.
dfr maxCreates a max expression or aggregates columns to their max value
dfr meanCreates a mean expression for an aggregation or aggregates columns to their mean value
dfr minCreates a min expression or aggregates columns to their min value
dfr otherwisecompletes a when expression.
dfr stdCreates a std expression for an aggregation of std value from columns in a dataframe
dfr sumCreates a sum expression for an aggregation or aggregates columns to their sum value
dfr varCreate a var expression for an aggregation
dfr whenCreates and modifies a when expression.