Ji Liu created ARROW-5968:
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Summary: [Java] Remove duplicate Preconditions check in JDBC
adapter
Key: ARROW-5968
URL: https://issues.apache.org/jira/browse/ARROW-5968
Project: Apache Arrow
Issue Type: Bug
Components: Java
Reporter: Ji Liu
Assignee: Ji Liu
Some Preconditions check are duplicate in {{JdbcToArrow#sqlToArrow}}
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