Re: How come column is locked?

Shaozhong SHI <shishaozhong@gmail.com> writes:
> I used
> create table if not exists waternetwork1.walknetwortt3 (fid integer[]);
> in do statement.

Perhaps the table already existed, with some other column list?

> When I use
> insert into waternetwork1.walknetwortt3 select fid from a function
> it failed.

"It failed" is totally inadequate as a description of the problem.
Did you read the error message?  What does it say, exactly?

            regards, tom lane