问题
I'm new to sql and i'm trying to remove carriage returns and line feeds from a column I imported from a csv file.
I'm using the code:
SELECT replace(replace(column,CHAR(13),''),CHAR(10),'')
FROM table
It correctly finds all the CR and LF, but it doesn't update the database. please advise.. thank you in advance! much appreciated.
回答1:
Your query retrieve from your table named TABLE all rows with the column replaced.
About UPDATE your database you must use UPDATE command in this way:
UPDATE table SET column = replace(replace(column,CHAR(13),''),CHAR(10),'')
If you want condition the UPDATE about the satisfaction of some conditions, so you must add the WHERE clause.
For example
UPDATE table SET column = replace(replace(column,CHAR(13),''),CHAR(10),'')
WHERE column_2 = 'XXX'
来源：https://stackoverflow.com/questions/20577365/mysql-removing-char13-char13