Fixed bug#16272: IF function with decimal args can produce wrong result
The Item_func_if::fix_length_and_dec() function when calculating length of result doesn't take into account unsigned_flag. But it is taken when calculating length of temporary field. This result in creating field that shorter than needed. Due to this, in the reported query 40.0 converted to 9.99. The function Item_func_if::fix_length_and_dec() now adds 1 to the max_length if the unsigned_flag isn't set. sql/item_cmpfunc.cc: Fixed bug#16272: IF function with decimal args can produce wrong result The function Item_func_if::fix_length_and_dec() now adds 1 to the max_length if the unsigned_flag isn't set. mysql-test/r/func_if.result: Added test case for bug#16272: IF function with decimal args can produce wrong result mysql-test/t/func_if.test: Added test case for bug#16272: IF function with decimal args can produce wrong result
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