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Function Reference
1010data Insights Platform offers a rich set of functions that may be used in value expressions when creating computed columns and in selection expressions when performing row selections.
Miscellaneous functions
This category of functions contains special functions that don't neatly fit into other categories of functions.
rolledup(X;I)
Returns a boolean value indicating whether or not a particular break column is included for the current row within a rollup tabulation.

Function Reference
1010data Insights Platform offers a rich set of functions that may be used in value expressions when creating computed columns and in selection expressions when performing row selections.
- All 1010data Functions
  1010data provides a whole range of functions that can provide information and act on your data.
- Time/Date functions
  The time/date functions are vector functions that operate on columns containing time-related data and return specific information about the date/time for each row.
- Group functions (g_functions)
  Group functions, or g_functions, are used to perform operations, such as summarizations, on rows that have the same values in a set of given columns.
- Math functions
  Math functions are vector functions that perform mathematical operations on one or more columns and return a column of results based on the operation.
- Matrix functions
- Categorization functions
  Categorization functions are vector functions that organize data and determine logical groupings. These functions can be used for conditionalizing results and/or bucketing value ranges.
- String functions
  String functions are vector functions that manipulate vectors of strings to provide information about a string or substring, concatenate and split strings, or transform strings based on specified criteria.
- List functions
  List functions are scalar functions that return lists, subsets of lists, and combinations of lists, among other functionality. Lists, along with packages, are compound scalar data types that facilitate programmatic interaction with scalar data values and variables.
- Data-handling functions
  Data-handling functions are vector functions that return a hash value based on an input column or columns.
- Row functions
  Row functions are vector functions that return computational outputs for row inputs, as opposed to column outputs. Row inputs are defined as a space- or comma-separated list of column names.
- SQL compatibility functions
  SQL compatibility functions are functions that treat null values as SQL nulls.
- Financial functions
- System functions
  System functions are special functions in 1010data that return information about users, tables, and other system objects.
- Object functions
  The object functions can be used to check the existence, type, and accessibility of objects such as folders, tables, and queries on the 1010data Insights Platform.
- Miscellaneous functions
  This category of functions contains special functions that don't neatly fit into other categories of functions.
  - rolledup(X;I)
    Returns a boolean value indicating whether or not a particular break column is included for the current row within a rollup tabulation.
  - stemmer(Y;L;P)
    Returns the stem of a word for a given language.

`rolledup(X;I)`

Returns a boolean value indicating whether or not a particular break column is included for the current row within a rollup tabulation.

Syntax

rolledup(X;I)

Input

Argument	Type	Description
`X`	integer	A column name `X` is the name of the indicator column specified by the `ind` attribute in the `<rollup>` element for the tabulation. See `<rollup>` for more information.
I	integer	The break column in question `I` is a number between 1 and the number of break columns, where 1 refers to the innermost (last) break column.

Return Value

Returns an integer value of 1 if the I'th break column is rolled up for the current row. Otherwise, returns 0.

Note: This function is useful only after a tabulation that includes a <rollup> element.

Example

The following example creates a rollup tabulation of pub.demo.baseball.batting using the columns lg, team, and lastname as the break columns. The <rollup> element creates an aggregation indicator column named level that contains an integer value related to which break columns are included in the rollup for each row. The column is_rolledup displays the results of rolledup(X;I), where X is the indicator column level and I is 1, which refers to the innermost break column, lastname. This function returns an integer value of 1 if the lastname column is included in the rollup for the current row, and returns 0 otherwise.

<base table="pub.demo.baseball.batting"/>
<tabu label="Tabulation on Batting" breaks="lg,team,lastname">
  <rollup ind="level"/>
  <tcol source="lg" fun="cnt" label="Count"/>
</tabu>
<sort col="level" dir="down"/>
<willbe name="is_rolledup" value="rolledup(level;1)"/>

Based on the value of the is_rolledup column, you can see that the lastname column is included in the rollup for those rows outlined in green, but is not included for those outlined in red.