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_938 ( "Number" real, "Astronaut" text, "Agency" text, "Total EVAs" real, "Total Time Hours:Minutes" text )

### Question ###
How many different total EVAs are there for the walk that lasted 45:34?

### Accurate SQL ###

SELECT COUNT("Total EVAs") FROM table_938 WHERE "Total Time Hours:Minutes" = '45:34'