- Expression:
<value1>><value2> - Operand: string, number, time
Constant
Example: Judge whether "2020-01-04" is greater than "2020-04-27"
return "2020-01-04" > "2020-04-27"
0
Function
Example: Judge whether PI is greater than 3
return pi() > 3
1
Alias
Example: Judge each row of an alias whether it is greater than 2
uncollect [1,2,3,2,2] as a
return a > 2
0
0
1
0
0
Sample graph: (to be used for the following examples)
create().node_schema("professor").node_schema("student")
create().node_property(@*, "age", int32).node_property(@*, "email", string)
insert().into(@professor).nodes([{_id:"P001",_uuid:1,age:53,email:"[email protected]"},{_id:"P002",_uuid:2,age:27,email:"[email protected]"}])
insert().into(@student).nodes([{_id:"S001",_uuid:3,age:27,email:"[email protected]"},{_id:"S002",_uuid:4,age:20,email:"[email protected]"},{_id:"S003",_uuid:5,age:25,email:"[email protected]"}])
Property
Example: Find nodes whose age is greater than 27
find().nodes({age > 27}) as n
return n{*}
|--------------- @professor --------------|
| _id | _uuid | age | email |
|-------|-------|-------|-----------------|
| P001 | 1 | 53 | [email protected] |
Example: Find nodes of @professor, whose age is greater than 27
find().nodes({@professor.age > 27}) as n
return n{*}
|--------------- @professor --------------|
| _id | _uuid | age | email |
|-------|-------|-------|-----------------|
| P001 | 1 | 53 | [email protected] |