base64 decode for column, like mysql FROM_BASE64(str)

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dear tdengine team:
i find base64 function in this repo,
https://github.com/search?q=repo%3Ataosdata%2FTDengine%20base64&type=code
is there a function like mysql FROM_BASE64(str) that i can use select FROM_BASE64('${column_value}') from ${table_name} in tdengine

Start with the repository-wide “base64” search linked in the issue and check the official SQL function documentation. Determine whether TDengine already exposes an equivalent to MySQL’s FROM_BASE64(str), and clarify the expected behavior and scope if it does not; done means the question has a documented answer or an explicitly scoped feature request.