The functions offered on a column of the type, in the spec's order
(§10.1): dates and Booleans add Min and Max to the distinct ones (Booleans
from M6d, §11.14), and strings too, with Join Text in a Group (§11.28);
numbers, DECIMAL included, get the distinct ones, Sum, Average, Min and
Max, then Std Dev and Variance, with Median and Percentile before them in a
Group (§11.28); StrictTime and enumerations the distinct ones (enumerations
from M6d); VARIANT and a type Cube doesn't know Count only. Count rows
takes no column, so it is never in the list.
The functions offered on a column of the type, in the spec's order (§10.1): dates and Booleans add Min and Max to the distinct ones (Booleans from M6d, §11.14), and strings too, with Join Text in a Group (§11.28); numbers, DECIMAL included, get the distinct ones, Sum, Average, Min and Max, then Std Dev and Variance, with Median and Percentile before them in a Group (§11.28); StrictTime and enumerations the distinct ones (enumerations from M6d); VARIANT and a type Cube doesn't know Count only. Count rows takes no column, so it is never in the list.