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_29196 ( "No. in series" real, "Title" text, "Directed by" text, "Written by" text, "Original airdate" text, "Production code" text )

### Question ###
The episode with production code 693-002, has how many original airdates?

### Accurate SQL ###

SELECT COUNT("Original airdate") FROM table_29196 WHERE "Production code" = '693-002'