I find select statement with square brackets in it. Can anybody explain what does this brackets means?
select a,b,[c] from table1;
According to oracle's documentation: http://docs.oracle.com/cd/B10500_01/text.920/a96518/cqspcl.htm
The bracket characters serve to group terms and operators found between the characters; however, they prevent penetrations for the expansion operators (fuzzy, soundex, stem).
Its a grouping character in the query.