public static String getTableNameFromIdentifier(String tableIdentifier) {
        String[] fieldArray = tableIdentifier.split("\\.");
        if (2 == fieldArray.length) {
            return fieldArray[1];
        }
        if (3 == fieldArray.length) {
            return fieldArray[1] + "." + fieldArray[2];
        }
        return null;
    }
Get table name From tableIdentifier
tableIdentifier maybe: ${dbName}.${tbName} or ${dbName}.${schemaName}.${tbName}

@param tableIdentifier The table identifier for which to get table name.
inlong-sort/sort-flink/sort-flink-v1.13/sort-connectors/jdbc/src/main/java/org/apache/inlong/sort/jdbc/internal/JdbcMultiBatchingComm.java