I'm trying to flip a bit field in SQL Server using an update query, that is, I want to make all the 0's into 1's and vice versa. What's the most elegant solution?
There doesn't seem to be a bitwise NOT operator in T-SQL (unless I'm missing something obvious) and I haven't been able to find any other way of performing the update.
You don't need a bitwise-not for this -- just XOR it with 1 / true.
To check it:
select idColumn, bitFieldY, bitFieldY ^ 1 as Toggled from tableX
update tableX set bitFieldY = bitFieldY ^ 1 where ...