Function create

src/DataTypes/DataTypeFixedString.cpp:65–77

static DataTypePtr create(const ASTPtr & arguments)
{
    if (!arguments || arguments->children.size() != 1)
        throw Exception(ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH,
                        "FixedString data type family must have exactly one argument - size in bytes");

    const auto * argument = arguments->children[0]->as<ASTLiteral>();
    if (!argument || argument->value.getType() != Field::Types::UInt64 || argument->value.safeGet<UInt64>() == 0)
        throw Exception(ErrorCodes::UNEXPECTED_AST_STRUCTURE,
                        "FixedString data type family must have a number (positive integer) as its argument");

    return std::make_shared<DataTypeFixedString>(argument->value.safeGet<UInt64>());
}


void registerDataTypeFixedString(DataTypeFactory & factory)