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1 | | -<!-- $PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.444 2008/09/06 00:01:21 tgl Exp $ --> |
| 1 | +<!-- $PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.445 2008/09/0701:29:36 momjian Exp $ --> |
2 | 2 |
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3 | 3 | <chapter id="functions"> |
4 | 4 | <title>Functions and Operators</title> |
@@ -12006,11 +12006,14 @@ SELECT pg_type_is_visible('myschema.widget'::regtype); |
12006 | 12006 | <row> |
12007 | 12007 | <entry><type>xip_list</type></entry> |
12008 | 12008 | <entry> |
12009 | | - Active txids at the time of the snapshot. All of them are between |
12010 | | - <literal>xmin</> and <literal>xmax</>. A txid that is |
12011 | | - <literal>xmin <= txid < xmax</literal> and not in this list was |
12012 | | - already completed at the time of the snapshot, and thus either visible |
12013 | | - or dead according to its commit status. |
| 12009 | + Active txids at the time of the snapshot. The list |
| 12010 | + includes only those active txids between <literal>xmin</> |
| 12011 | + and <literal>xmax</>; there might be active txids higher |
| 12012 | + than xmax. A txid that is <literal>xmin <= txid < |
| 12013 | + xmax</literal> and not in this list was already completed |
| 12014 | + at the time of the snapshot, and thus either visible or |
| 12015 | + dead according to its commit status. The list does not |
| 12016 | + include txids of subtransactions. |
12014 | 12017 | </entry> |
12015 | 12018 | </row> |
12016 | 12019 |
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