Roi Lipman

Implicit group key when mixing aggregation and none-aggregation functions in a single expression

6

Neo4j version: 4.2.1 `docker run -p7474:7474 -p7687:7687 -e NEO4J_AUTH=neo4j/s3cr3t neo4j` Initial graph: `CREATE (:N {v:2}), (:N {v:1}), (:M {v:2}), (:M {v:3})` Query 1: `MATCH (n:N), (m:M) RETURN n.v + m.v...

reset graph slowlog

1

Reset graph's slowlog `GRAPH.SLOWLOG G RESET`

Graph alias

3

Usage: `GRAPH.ALIAS ` A graph alias can be though of as file symbolic link TODO: Add documentation Handle graph schema change due to swap (client side)

estimate graph size

2

Try to estimate graph key memory usage, please note this is just an estimation not an exact evaluation! we're still missing index memory consumption estimation in addition of a way...

SIGSEGV handler

1

This is an example of how we might be able to handle one of the common exceptions we encounter (invalid memory access) the API resembles the Try/Catch mechanism. The idea...

Add support for FOREACH

1

Neo [doc](https://neo4j.com/docs/cypher-manual/current/clauses/foreach/)

Optional cartesian product

1

``` 127.0.0.1:6379> GRAPH.EXPLAIN g "MATCH (n) OPTIONAL MATCH (a), (b) RETURN *" 1) "Results" 2) " Project" 3) " Apply" 4) " All Node Scan | (n)" 5) " Optional"...

When there are multiple edge connecting `A` to `B` `MATCH (A:L0)-[r]->(B:L1) RETURN count(*)` Differs from `MATCH (A:L0)-[r]->(B:L1) RETURN count(r)` The latter would have count which is greater than the former,...

writer should acquire read lock and "upgrade" to write lock when it i…

1

…s ready to commit

Handle failure during RDB loading

2

Free resources when failing to decode from RDB. Let Redis know we're able to handle this situation.