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_21 (elevation_ VARCHAR, _height VARCHAR, name VARCHAR)

### Question ###
What is the elevation and height for Halfbeak?

### Accurate SQL ###

SELECT elevation_ + _height FROM table_name_21 WHERE name = "halfbeak"