if you wanna insert it into a new table :
INSERT INTO NEWTableName ( colName)
SELECT ROUND(column_1,0) as new_column_to_save
FROM table_to_save_to
If you want to update a column within the same table
UPDATE table_to_save_to
SET new_column_to_save = ROUND(column_1,0)
FROM table_to_save_to
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