10000 20000 string materialize('Hello, world!') materialize('This is a long string to test ClickHouse base64 functions impl..') toString(number) table numbers(10000000) SELECT count() FROM {table} WHERE NOT ignore(base64Encode({string})) SELECT count() FROM {table} WHERE base64Decode(base64Encode({string})) != {string} SELECT count() FROM {table} WHERE tryBase64Decode(base64Encode({string})) != {string}