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_2273738_1 ( metropolitan_area VARCHAR, county VARCHAR )

### Question ###
Tyne and Wear County has what total membership for their metropolitan area?

### Accurate SQL ###

SELECT metropolitan_area FROM table_2273738_1 WHERE county = "Tyne and Wear"