I need to execute multiple lines of SQL in web2py, something like this:
db.executesql("set @num := 0, @type := '';")\
rows = db.executesql("select type, variety, price\
from (\
select type, variety, price,\
@num := if(@type = type, @num + 1, 1) as row_number,\
@type := type as dummy\
from fruits\
order by type, price\
) as x where x.row_number <= 2;")
But, when I run it I don't get expected results in web2py (the variables
don't get initialized), even though it works from the mysql console. What
am I doing wrong?
They don't work, even if I put the variable initialization in the same
call. This piece of SQL is from here:
http://www.xaprb.com/blog/2006/12/07/how-to-select-the-firstleastmax-row-per-group-in-sql/
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