Roman Churganov created CALCITE-4290:
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Summary: Not optimal subqueries due to a "*" in them
Key: CALCITE-4290
URL: https://issues.apache.org/jira/browse/CALCITE-4290
Project: Calcite
Issue Type: Bug
Components: jdbc-adapter
Affects Versions: 1.25.0
Reporter: Roman Churganov
Run a query which should be distributed into sub-queries onto multiple schemas
through JDBC adapter, for example
select ft.id, ft.c11, tt.c41 from sch1.foo ft join sch2.tab tt on ft.id
= tt.id
Calcite will make two sub-queries like SELECT * FROM "TAB" ORDER BY "ID" and
SELECT * FROM "FOO" ORDER BY "ID" which are not optimal due to an excessive
columns data requested
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