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indexes when the index column type (the opclass opckeytype) is different from the expression's datatype. When coded, this limitation wasn't worth worrying about because we had no intelligence to speak of in stats collection for the datatypes used by such opclasses. However, now that there's non-toy estimation capability for tsvector queries, it amounts to a bug that ANALYZE fails to do this. The fix changes struct VacAttrStats, and therefore constitutes an API break for custom typanalyze functions. Therefore we can't back-patch it into released branches, but it was agreed that 9.0 isn't yet frozen hard enough to make such a change unacceptable. Ergo, back-patch to 9.0 but no further. The API break had better be mentioned in 9.0 release notes.
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. Changes between all PostgreSQL releases are recorded in the file HISTORY. 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/.