Can this error occur during an `UPDATE` statement, or is it exclusive to `INSERT`?

Error 1364 is primarily associated with `INSERT` statements because it concerns providing initial values for a new row. An `UPDATE` statement modifies existing rows, and all columns already have a value. However, a similar error can occur during an `UPDATE` if you try to set a `NOT NULL` column to `NULL` (e.g., `UPDATE your_table SET column_name = NULL WHERE ...;`) and that column does not permit `NULL` values. In such a case, you would typically receive an error like 'Column 'column_name' cannot be null' (Error 1048), rather than 'doesn't have a default value'.