Question

I’m currently importing a dictionary in mysql which has words that are seperated by _. I wanted to know how to specify the words are seperated by _. For example the words are as such:

Super_Mario
Stack_Overflow
Another_Word

so each row would then be stored as :

Super Mario
Stack Overflow
Another Word

I have this query right now:

LOAD DATA LOCAL INFILE 
C:/upload/dictionary.csv
INTO TABLE dictionary
fields terminated by ',' lines terminated by '\n'

would I have to use fields terminated by '_'?

Answer 1

No, you just use the SET clause (just like in an UPDATE) to set the field’s value with the result of a string REPLACE() operation that replaces underscores with spaces.

LOAD DATA LOCAL INFILE 
C:/upload/dictionary.csv
INTO TABLE dictionary (@var1)
SET your_column_name = REPLACE(@var1, '_', ' ')

The (@var1) bit after INTO TABLE dictionary just means “there’s only one column in the file I’m interested in, and I want to store it in @var1 so I can use it later in my SET clause instead of putting it directly into a column.” Do a Ctrl+F in for “SET clause” in the documentation for LOAD DATA INFILE to see how to use a SET clause when your input file has more than one column.