PostgreSQL column 'foo' does not exist

Question

I have a table that has 20 integer columns and 1 text column named \'foo\'

If I run query:

SELECT * from table_name where foo is NULL

Answer 1

I fixed it by changing the quotation mark (") with apostrophe (') inside Values. For instance:

insert into trucks ("id","datetime") VALUES (862,"10-09-2002 09:15:59");

Becomes this:

insert into trucks ("id","datetime") VALUES (862,'10-09-2002 09:15:59');

Assuming datetime column is VarChar.