Allows you to organize the date-time values in a source data column into buckets based on selected parts of their date or time values. For example, consider a pivot table showing sales transactions by date: +----------+--------------+ | Date | SUM of Sales | +----------+--------------+ | 1/1/2017 | 621.14∣∣2/3/2017∣708.84 | | 5/8/2017 | $326.84 | ... +----------+--------------+ Applying a date-time group rule with a DateTimeRuleType of YEAR_MONTH results in the following pivot table. +---
{
"type": "DATE_TIME_RULE_TYPE_UNSPECIFIED"
}