Andrey Mashenkov created IGNITE-15483:
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Summary: Uniq index detection.
Key: IGNITE-15483
URL: https://issues.apache.org/jira/browse/IGNITE-15483
Project: Ignite
Issue Type: Improvement
Reporter: Andrey Mashenkov
Uniq index constraint support is very limited due to performance issues in the
general case.
Uniq index must contain all affinity columns, in this case, uniqueness achieves
out of the box and costs nothing.
Uniq flag is very useful in query planning, as we may rely on the fact the
unique index lookup will always return a single row.
Maybe, it is not a good idea to allow users to configure index "uniq" flag
manually. (this is discussable)
But we can detect unique index and set the flag automatically.
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