# hash_sha256

Computes a SHA-256 hash digest.

```tql
hash_sha256(x:any, [seed=string]) -> string
```

## Description

The `hash_sha256` function calculates a SHA-256 hash digest for the given value `x`.

## Examples

### Compute a SHA-256 digest of a string

```tql
from {x: hash_sha256("foo")}
```

```tql
{x: "2c26b46b68ffc68ff99b453c1d30413413422e6e6c8ee90c3abeac38044e8a8c1b0"}
```

## See Also

* [`hash_md5`](https://preview.docs.tenzir.com/375/375/reference/functions/hash_md5.md)
* [`hash_sha1`](https://preview.docs.tenzir.com/375/375/reference/functions/hash_sha1.md)
* [`hash_sha224`](https://preview.docs.tenzir.com/375/375/reference/functions/hash_sha224.md)
* [`hash_sha384`](https://preview.docs.tenzir.com/375/375/reference/functions/hash_sha384.md)
* [`hash_sha512`](https://preview.docs.tenzir.com/375/375/reference/functions/hash_sha512.md)
* [`hash_sha3_224`](https://preview.docs.tenzir.com/375/375/reference/functions/hash_sha3_224.md)
* [`hash_sha3_256`](https://preview.docs.tenzir.com/375/375/reference/functions/hash_sha3_256.md)
* [`hash_sha3_384`](https://preview.docs.tenzir.com/375/375/reference/functions/hash_sha3_384.md)
* [`hash_sha3_512`](https://preview.docs.tenzir.com/375/375/reference/functions/hash_sha3_512.md)
* [`hash_xxh3`](https://preview.docs.tenzir.com/375/375/reference/functions/hash_xxh3.md)
* [Manipulate strings](https://preview.docs.tenzir.com/375/375/guides/transformation/manipulate-strings.md)