问题
I'm totally new in this area please tell me how to fix my problem.
when I write this query "SELECT * FROM places" in my database everything is okay.
However when I change it to "SELECT * FROM places WHERE eventId=2", I get error. Please look at this image.
as you can see, eventId column is exist. Why my query throws error?
回答1:
You've almost certainly added the column names in a case-sensitive environment. (PgAdmin comes to mind.) Lowercase them in that same environment to avoid the need to quote fields.
Or change your query to:
select * from places where "eventId" = 2
来源：https://stackoverflow.com/questions/20119646/sql-query-column-does-not-exist-error