Creating and managing graphs and views #314
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CIP
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oCIG
cypher10
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sherfert
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Apr 11, 2019
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| === Managing views in the catalog | ||
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| Views in the catalog can be managed with `COPY`, `RENAME`, `DELETE QUERY` in the same way as graphs. |
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Why the distinction that COPY and RENAME do not require the additional keyword of what is copied/renamed, but DELETE needs that?
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| Semantics: | ||
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| 1. `<composite statement>` must not be a correlated subqueries. |
| 4. `RETURN GRAPH <view name>` | ||
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| == Local declarations |
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This whole section is not so clear to me.
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| 1. `<composite statement>` must not be a correlated subqueries. | ||
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| 2. An error is raised, if a local declaration would shadow an already exisint local declaration. |
| [source, cypher] | ||
| ---- | ||
| QUERY _myView(args) { | ||
| WITH a, b |
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What is the difference between binding expectations and parameters?
| <composite statement> | ||
| } | ||
| MATCH (x)-[r:KNOWS]->(y) | ||
| CALL PER since _myView(5 WITH x AS a, y AS b) YIELD ... |
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This is a proposal for creating and managing graphs and views in the catalog and inside the query.
It also covers views and parameterized views.
It is part of the redesign of Cypher for adding support for working with multiple graphs that targets Cypher 10.
View latest version of CIP from associated branch