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Error messages informing the user that no such column exists can sometimes provoke a perplexed response. This often happens due to a subtle typo in the column name or, perhaps less likely, in the alias name. To speed discovery of what the real issue is in such cases, we'll now search the range table for approximate matches. If there are one or two such matches that are good enough to think that they might be what the user intended to type, and better than all other approximate matches, we'll issue a hint suggesting that the user might have intended to reference those columns. Peter Geoghegan and Robert Haas
PostgreSQL Database Management System ===================================== This directory contains the source code distribution of the PostgreSQL database management system. PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings. PostgreSQL has many language interfaces, many of which are listed here: http://www.postgresql.org/download See the file INSTALL for instructions on how to build and install PostgreSQL. That file also lists supported operating systems and hardware platforms and contains information regarding any other software packages that are required to build or run the PostgreSQL system. Copyright and license information can be found in the file COPYRIGHT. A comprehensive documentation set is included in this distribution; it can be read as described in the installation instructions. The latest version of this software may be obtained at http://www.postgresql.org/download/. For more information look at our web site located at http://www.postgresql.org/.