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 TRANSACTIONS (investor_id VARCHAR, transaction_type_code VARCHAR)

### Question ###
Show the number of transactions with transaction type code "SALE" for different investors if it is larger than 0.

### Accurate SQL ###

SELECT investor_id, COUNT(*) FROM TRANSACTIONS WHERE transaction_type_code = "SALE" GROUP BY investor_id