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mysqltrim

How to remove new line characters from data rows in mysql?

I can loop through all of the rows in a php script and do

UPDATE mytable SET title = "'.trim($row['title']).'" where id = "'.$row['id'].'";

and trim can remove \n

But I was just wondering if something same could be done in one query?

 update mytable SET title = TRIM(title, '\n') where 1=1

will it work? I can then just execute this query without requiring to loop through!

thanks

(PS: I could test it but table is quite large and dont want to mess with data, so just thought if you have tested something like this before)

Solution

  • your syntax is wrong:

    update mytable SET title = TRIM(TRAILING '\n' FROM title)

    Addition:

    If the newline character is at the start of the field:

    update mytable SET title = TRIM(LEADING '\n' FROM title)