How to hide certain row

Question

My project right now retrieve data from server, where it will tabulate the data consisting of 3 columns. The 1st and 2nd column will display right from the server, but the 3rd column will be going through my code first. For example, server only have date on deadline and the current date. So my code will display the days left for the deadline. So right now, I only want to display certain rows of the table displayed where deadline is not met. so my problem is, the table display all the 1st and the 2nd column first before going through the 3rd column.. So if I hide, then it will only hide the third column where it meet my condition. But all the 1st column and 2nd column data are still displayed..if the 3rd column data was supposed to be hidden, then on the row, it will follow the next row's 3rd column data.. if you get what i mean..all messed up..