What is the method for assigning a value to a bigint type in SQL?

In SQL, you can convert other data types to BIGINT using the CAST or CONVERT functions. For example:

SELECT CAST(column_name AS BIGINT) AS new_column_name
FROM table_name;

SELECT CONVERT(BIGINT, column_name) AS new_column_name
FROM table_name;

In this way, the data of a column can be converted to the BIGINT type and assigned to a new column.

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