title: mysql load data infile where clause
body: <p>I need to update existing rows in table with load data infile based on some condition, is this possible?</p>
  
  <pre>
  load data infile 'E:/xxx.csv'
  into table tld_tod
  @aaa, @xxx_date, @ccc
  fields terminated by ','
   LINES TERMINATED BY '\r\n'
  set xxx = str_to_date(@xxx_date, '%d-%b-%y')
  where xxx is not null and aaa=@aaa 
  
  </pre>