How to get the byte size of resultset in an SQL query?

Question

Is it possible to get the size in bytes of the results of an sql query in MySQL?

For example:

select * from sometable;

ths returns

Answer 1

To build on Angelin's solution, if your data contains nulls, you'll want to add IFNULL to each column:

select sum(
    ifnull(char_length(column1), 0) +
    ifnull(char_length(column2), 0) +
    ifnull(char_length(column3), 0) +
    ifnull(char_length(column4), 0) ... <-- repeat for all columns
)
from your_table