Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_18 (round VARCHAR, song VARCHAR)

### Question ###
What round has this song: 陶喆、蔡依林 - 今天你要嫁给我/曹格 - 世界唯一的你?

### Accurate SQL ###

SELECT round FROM table_name_18 WHERE song = "陶喆、蔡依林 - 今天你要嫁给我/曹格 - 世界唯一的你"