SchemaStatVisitor_RelationShip

String dbType = JdbcConstants.ORACLE; // JdbcConstants.MYSQL/JdbcConstants.SQL_SERVER

String sql = "select a.id, b.name from table1 a inner join table2 b on a.id = b.id";

SQLStatementParser parser = SQLParserUtils.createSQLStatementParser(sql, dbType);
SQLStatement stmt = parser.parseStatementList().get(0);

SchemaStatVisitor statVisitor = SQLUtils.createSchemaStatVisitor(dbType);
stmt.accept(statVisitor);

Set<TableStat.Relationship> relationships = statVisitor.getRelationships();
for (TableStat.Relationship relationship : relationships) {
    System.out.println(relationship); // table1.id = table2.id
}