DCOUNT and DCOUNTA Field argument can be omitted

ODF OpenFormula has

6.9.3 DCOUNT
Syntax: DCOUNT( Database D ; Field F ; Criteria C )

6.9.4 DCOUNTA
Syntax: DCOUNTA( Database D ; Field F ; Criteria C )

For these two functions the Field argument can be omitted (empty) in
LibreOffice Calc and Microsoft Excel, it should be defined as

Syntax: DCOUNT( Database D ; [ Field F ] ; Criteria C )

Semantics: If the Field argument is omitted, DCOUNT returns the count of
all records that satisfy Criteria.

Syntax: DCOUNTA( Database D ; [ Field F ] ; Criteria C )

Semantics: If the Field argument is omitted, DCOUNTA returns the count
of all records that satisfy Criteria.

From Eike Rathke - https://lists.oasis-open.org/archives/office-comment/201605/msg00000.html