pcount

 syntax

• pcount(a)

definition

pcount(a) is defined as the count of a data item a over it's own relation a, so pcount(a) is a synonym for count(a, a).

applies to

Attribute a with uint2, uint4, uint8, uint16, uint32, spoint, ipoint or bool value type

since version

5.15

example

attribute<uint32> pcountReg (Region) := pcount(City/Region_rel);

City/Region_rel
0
1
2
1
3
null
3

domain City, nr of rows = 7

pcountReg

1

2

1

2

0

domain Region, nr of rows = 5

see also

• count