waleedahmed0001 commented on issue #993:
URL: https://github.com/apache/age/issues/993#issuecomment-1595697806
The syntax of exist clause is mentioned below:
**Syntax:**
exists(property)
Returns:
An agtype boolean
Arguments:
property | A property from a vertex or edge
A query using the exist is mentioned below:
```
SELECT *
FROM cypher('graph_name', $$
MATCH (n)
WHERE exists(n.surname)
RETURN n.first_name, n.last_name
$$) as (first_name agtype, last_name agtype);
```
**Exists(Path)**
EXISTS(path) returns true if for the given path, there already exists the
given path.
```
SELECT *
FROM cypher('graph_name', $$
MATCH (n)
WHERE exists((n)-[]-({name: 'Willem Defoe'}))
RETURN n.full_name
$$) as (full_name agtype);
```
You can get more help from this
[documentation](https://age.apache.org/age-manual/master/functions/predicate_functions.html#exists-path)
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