sqlite empty inserts

[sapsi]

Hello,
I created a table like:

create table __saved_query__ (vdb_name text , query_table_name text
PRIMARY KEY, query text)

and then I insert as follows

    self.cursor.execute( "insert into __saved_query__(vdb_name,
query_table_name, query) values (?,?,?)", (vdbname,
foldername,where_query))
  self.conn.commit()
Now for some reason, the first insert works, but thereafter all
inserts result in empty rows
e.g
sqlite> select * from __saved_query__;
TestVDB|test_b|title regexp 'boo'
||
||

The last two rows are from the 2nd and 3rd inserts. The values i;m
inserting are non null.

Any ideas?

Thank you for your time
Saptarshi