Valentin Kulichenko created IGNITE-3487:
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Summary: _key and _val fields should be excluded from 'select *
from' queries
Key: IGNITE-3487
URL: https://issues.apache.org/jira/browse/IGNITE-3487
Project: Ignite
Issue Type: Improvement
Components: SQL
Affects Versions: 1.6
Reporter: Valentin Kulichenko
Fix For: 2.0
We have a pretty serious usability issue - predefined {{_key}} and {{_val}}
fields are returned when query like {{select * from}} is executed. First of
all, this is counterintuitive because user never defines or configures these
fields. Second of all, they actually duplicate all other fields. And finally,
they cause serialization exceptions because classes for key and value are not
always available.
We should exclude these fields from {{select * from}} queries, but this is a
compatibility breaking change. It should be done in 2.0.
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