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Cardinality inference for computable properties #2001

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tailhook opened this issue Nov 26, 2020 · 0 comments · Fixed by #2015
Closed

Cardinality inference for computable properties #2001

tailhook opened this issue Nov 26, 2020 · 0 comments · Fixed by #2015
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  • EdgeDB Version: 1-alpha6

Could not create a required computable property:

required property deleted := EXISTS(.<element[IS DeletionRecord]);

The error is:

possibly an empty set returned by an expression for the computable 'deleted' declared as 'required'

Since EXISTS never returns empty set I expect this to work.
@elprans elprans self-assigned this Dec 2, 2020
@elprans elprans added the bug label Dec 3, 2020
elprans added a commit that referenced this issue Dec 3, 2020
@elprans
Fix cardinality inference on operators
6a3fa11 
The operator cardinality inference currently doesn't take into account
the optionality of the return type, which results in incorrect lower
cardinality bound for most operators.  Function inference handles this
correctly.

Fixes: #2001
@elprans elprans mentioned this issue Dec 3, 2020
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elprans added a commit that referenced this issue Dec 3, 2020
@elprans
Fix cardinality inference on operators (#2015)
1d21c53 
The operator cardinality inference currently doesn't take into account
the optionality of the return type, which results in incorrect lower
cardinality bound for most operators.  Function inference handles this
correctly.

Fixes: #2001
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Fix cardinality inference on operators edgedb/edgedb
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