Amazon Redshift will no longer support the use of Python UDFs after June 30, 2026. We will start enforcing it in phases. For more information on the details of Python end of life and migration options, see the [ blog post ](https://aws.amazon.com/blogs/big-data/amazon-redshift-python-user-defined-functions-will-reach-end-of-support-after-june-30-2026/) that was published on June 30, 2025. 

# Literals
<a name="r_Literals"></a>

A literal or constant is a fixed data value, composed of a sequence of characters or a numeric constant. Amazon Redshift supports several types of literals, including:
+ Numeric literals for integer, decimal, and floating-point numbers. For more information, see [Integer and floating-point literals](r_numeric_literals201.md).
+ Character literals, also referred to as strings, character strings, or character constants
+ Datetime and interval literals, used with datetime data types. For more information, see [Date, time, and timestamp literals](r_Date_and_time_literals.md) and [Interval data types and literals](r_interval_data_types.md).