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Add btree and hash opclasses for pg_lsn.

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This is needed to allow ORDER BY, DISTINCT, etc to work as expected for
pg_lsn values.

We had previously decided to put this off for 9.5, but in view of commit
eeca4cd35e there's no reason to avoid a
catversion bump for 9.4beta2, and this does make a pretty significant
usability difference for pg_lsn.

Michael Paquier, with fixes from Andres Freund and Tom Lane
This commit is contained in:
Tom Lane
2014-06-04 20:45:56 -04:00
parent eeca4cd35e
commit 4c8ab1b91d
11 changed files with 196 additions and 4 deletions
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2
src/include/utils/pg_lsn.h
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@@ -29,6 +29,8 @@ extern Datum pg_lsn_lt(PG_FUNCTION_ARGS);
extern Datum pg_lsn_gt(PG_FUNCTION_ARGS);
extern Datum pg_lsn_le(PG_FUNCTION_ARGS);
extern Datum pg_lsn_ge(PG_FUNCTION_ARGS);
extern Datum pg_lsn_cmp(PG_FUNCTION_ARGS);
extern Datum pg_lsn_hash(PG_FUNCTION_ARGS);
extern Datum pg_lsn_mi(PG_FUNCTION_ARGS);