mkaravel opened a new pull request #34056:
URL: https://github.com/apache/spark/pull/34056
…, OR, XOR, NOT
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### What changes were proposed in this pull request?
This PR introduces four new SQL functions operating on the BINARY data type.
1. `bitand`: Takes as input two binary string and returns their bitwise
AND.
2. `bitor`: Takes as input two binary string and returns their bitwise OR.
3. `bitxor`: Takes as input two binary string and returns their bitwise
XOR.
4. `bitnot`: Takes as a binary string and returns its bitwise NOT.
For the first three functions the byte length of the result is the maximum
of the byte length of the two inputs.
For the first three functions the shortest (in terms of byte length) binary
string is semantically left-padded by zeros.
### Why are the changes needed?
These functions are useful for performing bitwise operations on `BINARY`
values, seen as bit sets.
Other databases offer similar or the same functionality.
### Does this PR introduce _any_ user-facing change?
Yes. Four new SQL functions.
### How was this patch tested?
Unit tests.
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