Comments (1)
Hunterness
commented on June 4, 2024
A query like
MATCH (n)
WITH 1 AS a
RETURN a
on an empty graph will return nothing as the result of the MATCH is empty.
The OpenCypher documentation does not explain this very well, but the linear composition means that the WITH clause will receive the output of the last clause as input and apply it's usage on each row of that input (unless aggregation is involved). If it receives 0 rows then it will apply it's 1 as a zero times and also give back 0 rows to the next clause.
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Related Issues (20)
- Issue in UNWIND option for duplicate records HOT 2
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- OpenCypher Antlr - strange parse tree (c#) HOT 3
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- Incomplete EBNF Grammar HOT 9
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