How do I delete blank rows in Mysql?

Question

I do have a table with more than 100000 data elements, but there are almost 350 blank rows within. How do I delete this blank rows using phpmyadmin? Manually deleting is a tedio

Answer 1

I have a PHP script that automatically removes empty rows based on column data types.

That allows me to define "emptiness" differently for different column types.

e.g.

table
first_name (varchar) | last_name (varchar) | some_qty ( int ) | other_qty (decimal)

DELETE FROM `table` WHERE
(`first_name` IS NULL OR `first_name` = '')
AND
(`last_name` IS NULL OR `last_name` = '')
AND
(`some_qty` IS NULL OR `some_qty` = 0)
AND
(`other_qty` IS NULL OR `other_qty` = 0)

Since "0" values are meaningless in my system, I count them as empty. But I found out that if you do (first_name = 0) then you will always get true, because strings always == 0 in MySQL. So I tailor the definition of "empty" to the data type.