curr.pgsql.execute(''' INSERT INTO my_table(name, age)
SELECT %s, %s
WHERE NOT EXISTS(SELECT name FROM my_table WHERE name= name)
''', ('Scott', 23))
So, WHERE name = name is ALWAYS true and so as long as there is at least one record in my_table the exists returns true, and the not inverts it to false and the main select returns zero rows. You have successfully inserted a record that doesn't exist (i.e., you've inserted nothing just like you observe).
David J.
Any advice on this Sir? Even adding the FROM statement in SELECT statement doesn't insert the data
INSERT INTO my_table(name, age)
SELECT %s, %s
FROM my_table
WHERE NOT EXISTS(SELECT name from my_table WHERE name = name)''', ('Scott', 23)
I also need to perform the same task but on another table but the data for that is from another DB.
