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_15765 ( "Shirt No" real, "Player" text, "Birth Date" text, "Weight" real, "Height" real )

### Question ###
Birth Date of 8 November 1980, and a Weight smaller than 93 has what sum of a shirt number?

### Accurate SQL ###

SELECT SUM("Shirt No") FROM table_15765 WHERE "Birth Date" = '8 november 1980' AND "Weight" < '93'