ReferenceSQL ReferenceSQL FunctionsfunctionsUNBASE64On this pageCategories: String, Binary UNBASE64 Decodes a Base64-encoded string. Syntax UNBASE64(expression varchar) → varbinary expression: A Base64-encoded string. Examples UNBASE64 example SELECT CAST(UNBASE64('RHJlbWlv') AS VARCHAR)-- Dremio