PostgreSQL 9.6.2 Documentation
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# E.312. Release 6.2.1

> Release Date: 1997-10-17

6.2.1 is a bug-fix and usability release on 6.2.

Summary:

- Allow strings to span lines, per SQL92.

- Include example trigger function for inserting user names on table updates.

This is a minor bug-fix release on 6.2. For upgrades from pre-6.2 systems, a full dump/reload is required. Refer to the 6.2 release notes for instructions.

## E.312.1. Migration from version 6.2 to version 6.2.1

This is a minor bug-fix release. A dump/reload is not required from version 6.2, but is required from any release prior to 6.2.

In upgrading from version 6.2, if you choose to dump/reload you will find that avg(money) is now calculated correctly. All other bug fixes take effect upon updating the executables.

Another way to avoid dump/reload is to use the following SQL command from `psql` to update the existing system table:

    update pg_aggregate set aggfinalfn = 'cash_div_flt8'
     where aggname = 'avg' and aggbasetype = 790;

This will need to be done to every existing database, including template1.

## E.312.2. Changes

    Allow TIME and TYPE column names(Thomas)
    Allow larger range of true/false as boolean values(Thomas)
    Support output of "now" and "current"(Thomas)
    Handle DEFAULT with INSERT of NULL properly(Vadim)
    Fix for relation reference counts problem in buffer manager(Vadim)
    Allow strings to span lines, like ANSI(Thomas)
    Fix for backward cursor with ORDER BY(Vadim)
    Fix avg(cash) computation(Thomas)
    Fix for specifying a column twice in ORDER/GROUP BY(Vadim)
    Documented new libpq function to return affected rows, PQcmdTuples(Bruce)
    Trigger function for inserting user names for INSERT/UPDATE(Brook Milligan)

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