hash¶
Description¶
Accepts a variable number of arguments of arbitrary types and returns a signed 64-bit hash of the values.
hash never returns null. hash is not a cryptographic hash function and should not be used as such.
Return type¶
int64
Domain¶
This is a scalar function (calculates a single output value for a single input row.)
Categories¶
Usage¶
hash(args_1, args_2, ...)
Argument |
Type |
Optional |
Repeatable |
Restrictions |
|---|---|---|---|---|
args |
storable |
no |
yes |
none |
Examples¶
make_col h:hash(@.x, @.y)
Create a column ‘h’ with the result of hashing the columns ‘x’ and ‘y’