Julian Hyde created CALCITE-3048:
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Summary: Improve how JDBC adapter deduces current schema on
Redshift
Key: CALCITE-3048
URL: https://issues.apache.org/jira/browse/CALCITE-3048
Project: Calcite
Issue Type: Bug
Reporter: Julian Hyde
Improve how JDBC adapter deduces current schema on Amazon Redshift or
PostgreSQL. Until now, we either look at the schema connect-string parameter,
or call {{Connection.getSchema()}} (on JDBC 4.1 and above). But in Redshift's
JDBC driver, {{Connection.getSchema()}} always returns null.
Now, if we know we are running against Redshift or PostgreSQL, we will execute
a {{select current_schema()}} query to find the current schema.
Similarly for {{Connection.getCatalog()}} and {{select current_database()}}.
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