confuse about `CONSTRUCT` and `UPDATE`

[alice]

hi all, I have read your documentation. I found it easy to mix CONSTRUCT with UPDATE. I wonder whether the following cyphers mean the same.

FROM xxx match (a:Person) UPDATE GRAPH merge (b:Student{name:a.name})

and

FROM xxx match (a:Person) CONSTRUCT merge (b:Student{name:a.name})

suppose the working graph is yyy, is it both two cyphers will lead to create nodes with a label Student in the graph yyy.

Thanks for your reply.

[Hannes Voigt]

I think FROM xxx match (a:Person) UPDATE GRAPH merge (b:Student{name:a.name}) is not a valid statement. In UPDATE GRAPH you only get to do DELETE, SET, REMOVE on prior matched variables. With which software, you intend to use this functionality?