如何连接,并将破折号添加到需要使用LOAD DATA IN FILE插入的数据

Im loading a file straight into a database, to avoid having to process it using PHP. Because the file contains 2+ million rows.

However, I do still need to "process" the values before inserting.

The file consists of

 Col 1 |  Col 2
 200     2505555

I can insert this just fine using

"LOAD DATA local INFILE '%s' INTO TABLE number_check FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '\"' ESCAPED BY '\"' LINES TERMINATED BY '\
' IGNORE 0 LINES "

However.... I want to insert it into only one column. Concatenated.

   Col 1
   2002505555

Getting this far would be great. And might be ok. But one step further would be even better, if someone knows how. I basically want to also add dashes and insert it like this

   Col 1 
   200-250-5555

Is this possible using the LOAD DATA query?? Also ideally, if the column exists, it shouldn't insert it. Col1 should be a unique key.

Ok figured this one out on my own again. Heres the answer incase anyones interested.

SET ID = concat(SUBSTR(`area`, 1, 3), '-', SUBSTR(`number`, 1,3),'-', SUBSTR(`number`,4,7))

Or the full query

$query = sprintf("LOAD DATA local INFILE '%s' INTO TABLE number_check FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '\"' ESCAPED BY '\"' LINES TERMINATED BY '\
' IGNORE 0 LINES SET ID = concat(SUBSTR(`area`, 1, 3), '-', SUBSTR(`number`, 1,3),'-', SUBSTR(`number`,4,7))", addslashes($file));