Flink SQL: Convert Timestamp with Null to String

{"title":"Flink SQL: Convert Timestamp with Null to String", "description":"Learn how to use the CAST function in Flink SQL to convert a timestamp column containing null values to a string. This guide provides a simple example and explains the process.", "keywords":"Flink SQL, CAST, timestamp, null, string, conversion, data types, null handling", "content":"In Flink SQL, you can use the CAST function to convert a TIMESTAMP column containing null values to a string. Here is an example:\n\nsql\nSELECT CAST(your_timestamp_column AS VARCHAR) AS your_string_column\nFROM your_table;\n\n\nIn the above example, your_timestamp_column is the TIMESTAMP column containing null values, and your_table is the table containing this column. The CAST function converts the TIMESTAMP type to VARCHAR type, and the result is returned as your_string_column. \n\nPlease note that if the TIMESTAMP column contains a null value, the converted string will also be null."}