public JdbcOutputFormat.Builder setFieldNames(String[] fieldNames) {
            this.fieldNames = fieldNames;
            return this;
        }
required, field names of this jdbc sink.
inlong-sort/sort-flink/sort-flink-v1.18/sort-connectors/jdbc/src/main/java/org/apache/inlong/sort/jdbc/internal/JdbcOutputFormat.java