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| author | Robert Haas <rhaas@postgresql.org> | 2013-07-02 13:35:14 -0400 |
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| committer | Robert Haas <rhaas@postgresql.org> | 2013-07-02 13:38:55 -0400 |
| commit | 3682025015390a8e802e0752589162db7bd70b5d (patch) | |
| tree | b72433fb328d27b2289204e2c19282de29633f22 /doc/src | |
| parent | 148326b9940c6f3aa554df83a70c7d4563f67d86 (diff) | |
| download | postgresql-3682025015390a8e802e0752589162db7bd70b5d.tar.gz postgresql-3682025015390a8e802e0752589162db7bd70b5d.zip | |
Add support for multiple kinds of external toast datums.
To that end, support tags rather than lengths for external datums.
As an example of how this can be used, add support or "indirect"
tuples which point to some externally allocated memory containing
a toast tuple. Similar infrastructure could be used for other
purposes, including, perhaps, support for alternative compression
algorithms.
Andres Freund, reviewed by Hitoshi Harada and myself
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