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_10 (floors INTEGER, name VARCHAR, rank VARCHAR)

### Question ###
what is the total of floors when the name is kölntriangle and rank is less thank 63?

### Accurate SQL ###

SELECT SUM(floors) FROM table_name_10 WHERE name = "kölntriangle" AND rank < 63