Is there an elegant way to Invert a Bit value in an SQL insert Statement?
Quick as a rabbit & simple as one plus one: use XOR operator ^
with 1
to swing bits around:
This elevates a humble 0
(Jedi) to a mighty 1
(Sith) or de-escalates a Sith back to Jedi, right in the middle of the galactic insert.
Using tilde operator for bit inversion
The tilde operator ~
is a seasoned veteran for bit inversion in SQL Server galaxy. It's a bitwise NOT operator in disguise:
Any 1
you encounter will bow down to a 0
, and any 0
will rise up to 1
. Neighborly advice, not a trick of the Jedi mind!
Null handling and non-bit columns
On the battlefield, you might stumble upon those tricky nulls. Never fear, for ISNULL is near:
Bumping into columns not of the bit data type, enlist another champion of conversion:
KN-0110 from 1
back to 0
and vice versa. Just remember, don't let it sneak up to 2
.
Jedi's wisdom and Sith's tricks
Avoid NOT operator for bit flips; it's not your friend in this journey. Its true calling lies in logical operations. Beware of imposters like ABS; they're not here for the greater good.
Master every technique by testing them against all odds – null values, different species, I mean, data types, etc.
Battle strategy: efficiency and performance
Sending multiple troops (bit values) into battle? Go with the efficient strategy of INSERT INTO ... SELECT
paired with the tilde ~
operator:
Stormtroopers transformed into rebel fighters, and vice versa, in one swift maneuver. Efficiency, thy name is SQL.
Other galaxies, different rules
On off-world colonies like SQL Server, sometimes the binary operator 1 - bitValue
does the trick, although less common.
But rules are a bit like stormtroopers: There's always a new batch, they're worth knowing about, but you usually stick with your jedis and sith lords (~
and ^
).
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