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Neo4j

Write Cypher queries with proper patterns for merging, traversal, and performance.

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High Signal

Write Cypher queries with proper patterns for merging, traversal, and performance.

⬇ 0 downloads ★ 0 stars Unverified but indexed

Install for OpenClaw

Quick setup
  1. Download the package from Yavira.
  2. Extract the archive and review SKILL.md first.
  3. Import or place the package into your OpenClaw setup.

Requirements

Target platform
OpenClaw
Install method
Manual import
Extraction
Extract archive
Prerequisites
OpenClaw
Primary doc
SKILL.md

Package facts

Download mode
Yavira redirect
Package format
ZIP package
Source platform
Tencent SkillHub
What's included
SKILL.md

Validation

  • Use the Yavira download entry.
  • Review SKILL.md after the package is downloaded.
  • Confirm the extracted package contains the expected setup assets.

Install with your agent

Agent handoff

Hand the extracted package to your coding agent with a concrete install brief instead of figuring it out manually.

  1. Download the package from Yavira.
  2. Extract it into a folder your agent can access.
  3. Paste one of the prompts below and point your agent at the extracted folder.
New install

I downloaded a skill package from Yavira. Read SKILL.md from the extracted folder and install it by following the included instructions. Tell me what you changed and call out any manual steps you could not complete.

Upgrade existing

I downloaded an updated skill package from Yavira. Read SKILL.md from the extracted folder, compare it with my current installation, and upgrade it while preserving any custom configuration unless the package docs explicitly say otherwise. Summarize what changed and any follow-up checks I should run.

Trust & source

Release facts

Source
Tencent SkillHub
Verification
Indexed source record
Version
1.0.0

Documentation

ClawHub primary doc Primary doc: SKILL.md 9 sections Open source page

MERGE Trap

MERGE matches the FULL pattern—MERGE (a)-[:KNOWS]->(b) creates duplicates if relationship missing Safe upsert: merge nodes separately, then merge relationship Use ON CREATE SET and ON MATCH SET for conditional properties—without these, nothing updates on match For simple node upsert: MERGE (n:User {id: $id}) with unique constraint on id

Indexes

No index on property = full label scan—always index properties used in WHERE Unique constraint auto-creates index—prefer constraint over plain index when applicable Check plan with EXPLAIN before production—look for "NodeByLabelScan" without filter pushdown Text search needs full-text index: CREATE FULLTEXT INDEX FOR (n:Post) ON EACH [n.title, n.body]

Variable-Length Paths

Unbounded [*] explodes on connected graphs—always set upper bound [*1..5] [*0..] includes start node—usually unintended, start from [*1..] shortestPath() returns one path only—use allShortestPaths() for all equally short paths Filter inside path is expensive: [r:KNOWS* WHERE r.active] scans then filters—consider data model change

Cartesian Product

Two disconnected patterns multiply: MATCH (a:User), (b:Product) returns rows × rows Connect patterns or split with WITH—unintended cartesian kills performance Same variable in two patterns = implicit join, no cartesian PROFILE query shows "CartesianProduct" operator when it happens

WITH Scope Reset

Only variables in WITH carry forward—MATCH (a)--(b) WITH a loses b Aggregation forces WITH: MATCH (u:User) WITH u.country AS c, count(*) AS n Common mistake: filtering after aggregation requires second WITH Pagination: WITH n ORDER BY n.created SKIP 10 LIMIT 10

NULL Propagation

OPTIONAL MATCH returns NULL for missing patterns—NULLs propagate through expressions WHERE after OPTIONAL MATCH filters out NULLs—use COALESCE() to preserve rows count(NULL) returns 0—useful: OPTIONAL MATCH (u)-[:REVIEWED]->(p) RETURN count(p) Property access on NULL throws no error, returns NULL—silent data loss

Direction

Query direction ignored with no arrow: (a)-[:KNOWS]-(b) matches both ways Creation requires direction—must pick one, can't create undirected Wrong direction = empty results—if relationship is (a)-[:OWNS]->(b), query (b)-[:OWNS]->(a) finds nothing

Batch Operations

Large creates in single transaction exhaust heap—use CALL {} IN TRANSACTIONS OF 1000 ROWS UNWIND $list AS item CREATE (n:Node {id: item.id}) for batch inserts apoc.periodic.iterate() for complex batch logic with progress Delete in batches: MATCH (n:Old) WITH n LIMIT 10000 DETACH DELETE n in loop

Parameter Injection

Always use parameters $param not string concatenation—prevents Cypher injection Parameters also enable query plan caching—literal values recompile each time Pass as map: {param: value} in driver, :param {param: value} in browser List parameter for IN: WHERE n.id IN $ids

Category context

Agent frameworks, memory systems, reasoning layers, and model-native orchestration.

Source: Tencent SkillHub

Largest current source with strong distribution and engagement signals.

Package contents

Included in package
1 Docs
  • SKILL.md Primary doc