"but" operator add value or confusion

Question is too broad for so, but what do you think, would a "but" operator add semantic value or would it add confusion? Why do programming languages lack a "but" operator, when the word is so common to emphasize meaning in the English language?

Comments

[val von vorn]

But could be an optional no-op token to reduce ambiguity or it could be used instead of brackets. An example, e.g.

SELECT WHERE A=1 BUT NOT B=2

In your opinion, would it make the code more readable or more ambiguous?

[val von vorn]

The question seems to difficult for anyone to answer yet?