## Syntax
```mermaid
%%{init: {
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'flowchart': { 'padding': '7', 'nodeSpacing': '20', 'rankSpacing': '20' },
'themeVariables': {
'fontSize': '11px',
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}}%%
flowchart LR
Start((START)) --> RANDOM_BLOB[RANDOM_BLOB]:::quoted
RANDOM_BLOB --> End((END))
```
## Purpose
The `RANDOM_BLOB` SQL function generates a blob with pseudo-random values.
See also [[RANDOM]], [[RANDOM_TEXT]] and [[ZERO_BLOB]].
Parameters:
- Length (`int32`): Produce a blob with this length in terms of bytes.
Returns: A blob with pseudo-random values.
## Examples
The following example generates a blob of 100 pseudo-random bytes and retrieves the length in bytes:
```sql
select length(random_blob(100))
-------------------
100
```
The following example returns `null` since the length is `null`:
```sql
select random_blob(null)
-------------------
```