InnerJoin functionality vulnerability in SQL relational table model affecting database query correctness

• SQL query errors: InnerJoin mode implementation has defects causing incorrect SQL generation

• Data inconsistency: InnerJoin mode may produce incorrect query results

• Functionality failure: InnerJoin code is "known to be broken", LeftJoin recommended

• User experience issues: Applications may display wrong data, affecting user trust

• Development difficulties: Developers must use LeftJoin as alternative, increasing complexity