I have a problem with one of the tables in my database. The thing is that one of the rows is present in corresponding data file yet I'm unable to perform any actions on it including simple SELECT statement. Is there a way of deleting the tuple from the file by zeroing it and then reindexing the table. I tried other ways of dealing with the problem like vacuming and clustering the table but it pops out the error and terminates when processing the given row. I have several data folders so when I find the exact error message I will post it