Update openCypher-Exercises-Answer-Key.ipynb #526
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As mentioned earlier in the notebook, the `MERGE` clause does not support partial pattern matches. When matching against patterns in `MERGE`, the matches are either the entire pattern, or the entire pattern is created.
Because the pattern is a partial match, it currently creates a new "person {first_name: 'Dave'}" node for each of the new "person" added to the graph.
By first doing a MERGE for (d:person {first_name: 'Dave'), when the partial match happens, the whole path is again created, but this time linking to the already existing "Dave" rather than creating new ones each time.
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Of course, happy to help! |
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Issue #, if available: N/A
Description of changes:
As mentioned earlier in the notebook, the
MERGEclause does not support partial pattern matches. When matching against patterns inMERGE, the matches are either the entire pattern, or the entire pattern is created.Because the pattern is a partial match, it currently creates a new "person {first_name: 'Dave'}" node for each of the new "person" added to the graph.
By first doing a MERGE for (d:person {first_name: 'Dave'), when the partial match happens, the whole path is again created, but this time linking to the already existing "Dave" rather than creating new ones each time.
By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.