title: mysql cant write to text field "Because of its length, this field might not be editable " error
body: <p>i have a "text" type field in mysql.</p>
  
  <p>It seems i cant write over a limit of characters on that field through my application, and in manual editing through phpmyadmin i get a warning "Because of its length,
  this field might not be editable" on that field.</p>
  
  <p>What is this about? Does this has something to do with max query size???</p>
  
  <p>Should i change TEXT -> MEDIUMTEXT/LONGTEXT to avoid this error? If i do so, will this have negative impact on the performance of the table?</p>
  
  <p>Thank you!</p>
  
  <p>p.s. Collation is utf8_general_ci</p>