# Indexing links
**URL:** https://community.neo4j.com/t/indexing-links/9051
**Category:** Neo4j Graph Platform
**Tags:** index
**Created:** [July 26, 2019, 12:13pm UTC](https://community.neo4j.com/t/indexing-links/9051 "2019-07-26T12:13:39Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@leonard.panichi](https://community.neo4j.com/u/leonard.panichi)
#### Post date: [July 26, 2019, 12:13pm UTC](https://community.neo4j.com/t/indexing-links/9051/1 "2019-07-26T12:13:40Z")
Hi,
I have a graph with a lot of relationships and I would like to have an index on one link type.
The goal is to run queries such as
```auto
match(n)<-[l:is_linked]-(p)
where l.uuid = "405b6b8b-139a-4569-a695-708d018e61c1"
return n, p
```
And avoid the huge _AllNodesScan_, _expandAll_ and _filter_ of this query. What I need is simply a constraint assert unique on link property.
Is that possible ? I tried the relationship property existence constraint but it doesn't index things.
---
### Author:  [@stefan.armbruster](https://community.neo4j.com/u/stefan.armbruster)
#### Post date: [July 26, 2019, 3:46pm UTC](https://community.neo4j.com/t/indexing-links/9051/2 "2019-07-26T15:46:39Z")
In 3.5 you can have fulltext indexes on relationships, see [https://neo4j.com/docs/cypher-manual/3.5/schema/index/#schema-index-fulltext-search](https://neo4j.com/docs/cypher-manual/3.5/schema/index/#schema-index-fulltext-search).
---
### Author:  [@leonard.panichi](https://community.neo4j.com/u/leonard.panichi)
#### Post date: [July 27, 2019, 6:27pm UTC](https://community.neo4j.com/t/indexing-links/9051/3 "2019-07-27T18:27:59Z")
Excellent, works perfectly as expected, thank you very much 🙂