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_18143210_2 ( number_of_seasons_in_liga_mx VARCHAR, first_season_of_current_spell_in_top_division VARCHAR )

### Question ###
How many 'number of season in Liga MX' were played if the 'first season of current spell in top division' is in 1962-63?

### Accurate SQL ###

SELECT number_of_seasons_in_liga_mx FROM table_18143210_2 WHERE first_season_of_current_spell_in_top_division = "1962-63"