Select Into OUTFILE Mariadb/MYSQL to export data in csv format

At  times where we need to export Data into csv format in mariadb/mysql,

SELECT INTO OUTFILE will write resulting rows from a query into a file - csv..

Below is a simple example on this :

select * from table INTO OUTFILE  '/path/test.csv'
FIELDS TERMINATED BY ','
ENCLOSED BY ' " '
ESCAPED BY '\\'
LINES TERMINATED BY '\n';

Handling Null values -

Another thing we will notice is having /N in output where we have Null values in table, in few cases requirement is to have blank Fields instead of /N in output. in these cases we need to use IFNULL function in the query

example,

Select name, IFNULL (Date, ' ') from table INTO OUTFILE  '/path/test.csv'
FIELDS TERMINATED BY ','
ENCLOSED BY ' " '
ESCAPED BY '\\'
LINES TERMINATED BY '\n';

With the above we replaced Null with blank in the csv output.