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_30238 ( "Round" text, "Clubs remaining" real, "Clubs involved" real, "Winners from previous round" text, "New entries this round" text, "Leagues entering at this round" text )

### Question ###
How many clubs were involved in the second round?

### Accurate SQL ###

SELECT "Clubs involved" FROM table_30238 WHERE "Round" = 'Second round'