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Add transform functions for various temporal typmod coercisions.

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This enables ALTER TABLE to skip table and index rebuilds in some cases.

Noah Misch, with trivial changes by me.
This commit is contained in:
Robert Haas
2012-02-08 09:33:02 -05:00
parent 1a01560cbb
commit c13897983a
8 changed files with 150 additions and 6 deletions
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2
src/include/utils/timestamp.h
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@@ -100,6 +100,7 @@ extern Datum timestamp_recv(PG_FUNCTION_ARGS);
extern Datum timestamp_send(PG_FUNCTION_ARGS);
extern Datum timestamptypmodin(PG_FUNCTION_ARGS);
extern Datum timestamptypmodout(PG_FUNCTION_ARGS);
extern Datum timestamp_transform(PG_FUNCTION_ARGS);
extern Datum timestamp_scale(PG_FUNCTION_ARGS);
extern Datum timestamp_eq(PG_FUNCTION_ARGS);
extern Datum timestamp_ne(PG_FUNCTION_ARGS);
@@ -136,6 +137,7 @@ extern Datum interval_recv(PG_FUNCTION_ARGS);
extern Datum interval_send(PG_FUNCTION_ARGS);
extern Datum intervaltypmodin(PG_FUNCTION_ARGS);
extern Datum intervaltypmodout(PG_FUNCTION_ARGS);
extern Datum interval_transform(PG_FUNCTION_ARGS);
extern Datum interval_scale(PG_FUNCTION_ARGS);
extern Datum interval_eq(PG_FUNCTION_ARGS);
extern Datum interval_ne(PG_FUNCTION_ARGS);