using rand()

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Hey,
need some advise on what would be the best way to do this:

I have a table with these fields:
cno (just a auto_increment field),
username,
sex (2 values: man, woman),
has_pic (0=no,1=yes),
pic_name

I need to randomly get 3 womens pictures and one guys picture from the above
table...
I know I need to use rand() and i thought maybe shuffle() but am getting a
bit lost in the logic part...help please?

Thanks,
Ryan




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