SQL ordering in XCode -


i want order data variables , select first record. doesn't work. here code:

nsstring *s = [db stringforquery:@"select cardinfo.?, cardinfo.?, cardinfo.? cardinfo cardinfo.currentbalance > ? order cardinfo.? desc, cardinfo.? desc, cardinfo.? asc ", first, second, third, [nsnumber numberwithdouble:money], first, second, third];

if change ordering constants, works.

nsstring *s = [db stringforquery:@"select a, b, c cardinfo cardinfo.currentbalance > ? order desc, b desc, c asc ",[nsnumber numberwithdouble:money]];

does know how correct it? lot.

yep. order cardinfo.? attempts parameterize metadata, column name. prepared statements allow parameterize data only.

you can say

where tablename.colname = ?

you cannot say

where ?.colname = 'foo'

hth.


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