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Support window functions a la SQL:2008.

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Hitoshi Harada, with some kibitzing from Heikki and Tom.
This commit is contained in:
Tom Lane
2008-12-28 18:54:01 +00:00
parent 38e9348282
commit 95b07bc7f5
92 changed files with 6720 additions and 321 deletions
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19
src/include/utils/builtins.h
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/utils/builtins.h,v 1.328 2008/12/19 16:25:19 petere Exp $
* $PostgreSQL: pgsql/src/include/utils/builtins.h,v 1.329 2008/12/28 18:54:01 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -988,6 +988,23 @@ extern Datum uuid_ne(PG_FUNCTION_ARGS);
extern Datum uuid_cmp(PG_FUNCTION_ARGS);
extern Datum uuid_hash(PG_FUNCTION_ARGS);
/* windowfuncs.c */
extern Datum window_row_number(PG_FUNCTION_ARGS);
extern Datum window_rank(PG_FUNCTION_ARGS);
extern Datum window_dense_rank(PG_FUNCTION_ARGS);
extern Datum window_percent_rank(PG_FUNCTION_ARGS);
extern Datum window_cume_dist(PG_FUNCTION_ARGS);
extern Datum window_ntile(PG_FUNCTION_ARGS);
extern Datum window_lag(PG_FUNCTION_ARGS);
extern Datum window_lag_with_offset(PG_FUNCTION_ARGS);
extern Datum window_lag_with_offset_and_default(PG_FUNCTION_ARGS);
extern Datum window_lead(PG_FUNCTION_ARGS);
extern Datum window_lead_with_offset(PG_FUNCTION_ARGS);
extern Datum window_lead_with_offset_and_default(PG_FUNCTION_ARGS);
extern Datum window_first_value(PG_FUNCTION_ARGS);
extern Datum window_last_value(PG_FUNCTION_ARGS);
extern Datum window_nth_value(PG_FUNCTION_ARGS);
/* access/transam/twophase.c */
extern Datum pg_prepared_xact(PG_FUNCTION_ARGS);