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postgresql/src/include/executor/nodeAgg.h

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Postgres95 1.01 Distribution - Virgin Sources
1996-07-09 08:22:35 +02:00
/*-------------------------------------------------------------------------
*
Change my-function-name-- to my_function_name, and optimizer renames.
1999-02-14 00:22:53 +01:00
* nodeAgg.h
Create a new file executor/execGrouping.c to centralize utility routines shared by nodeGroup, nodeAgg, and soon nodeSubplan.
2003-01-11 00:54:24 +01:00
* prototypes for nodeAgg.c
Postgres95 1.01 Distribution - Virgin Sources
1996-07-09 08:22:35 +02:00
*
*
Tag appropriate files for rc3 Also performed an initial run through of upgrading our Copyright date to extend to 2005 ... first run here was very simple ... change everything where: grep 1996-2004 && the word 'Copyright' ... scanned through the generated list with 'less' first, and after, to make sure that I only picked up the right entries ...
2004-12-31 23:04:05 +01:00
* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
Add: * Portions Copyright (c) 1996-2000, PostgreSQL, Inc to all files copyright Regents of Berkeley. Man, that's a lot of files.
2000-01-26 06:58:53 +01:00
* Portions Copyright (c) 1994, Regents of the University of California
Postgres95 1.01 Distribution - Virgin Sources
1996-07-09 08:22:35 +02:00
*
Improve planner's estimation of the space needed for HashAgg plans: look at the actual aggregate transition datatypes and the actual overhead needed by nodeAgg.c, instead of using pessimistic round numbers. Per a discussion with Michael Tiemann.
2005-01-28 20:34:28 +01:00
* $PostgreSQL: pgsql/src/include/executor/nodeAgg.h,v 1.24 2005/01/28 19:34:18 tgl Exp $
Postgres95 1.01 Distribution - Virgin Sources
1996-07-09 08:22:35 +02:00
*
*-------------------------------------------------------------------------
*/
Massive commit to run PGINDENT on all *.c and *.h files.
1997-09-07 07:04:48 +02:00
#ifndef NODEAGG_H
#define NODEAGG_H
Postgres95 1.01 Distribution - Virgin Sources
1996-07-09 08:22:35 +02:00
Restructure representation of aggregate functions so that they have pg_proc entries, per pghackers discussion. This fixes aggregates to live in namespaces, and also simplifies/speeds up lookup in parse_func.c. Also, add a 'proimplicit' flag to pg_proc that controls whether a type coercion function may be invoked implicitly, or only explicitly. The current settings of these flags are more permissive than I would like, but we will need to debate and refine the behavior; for now, I avoided breaking regression tests as much as I could.
2002-04-11 22:00:18 +02:00
#include "fmgr.h"
Phase 1 of read-only-plans project: cause executor state nodes to point to plan nodes, not vice-versa. All executor state nodes now inherit from struct PlanState. Copying of plan trees has been simplified by not storing a list of SubPlans in Plan nodes (eliminating duplicate links). The executor still needs such a list, but it can build it during ExecutorStart since it has to scan the plan tree anyway. No initdb forced since no stored-on-disk structures changed, but you will need a full recompile because of node-numbering changes.
2002-12-05 16:50:39 +01:00
#include "nodes/execnodes.h"
Cleanup up include files.
1997-11-26 02:14:33 +01:00
Add typdefs to pgindent run.
1997-09-08 22:59:27 +02:00
extern int ExecCountSlotsAgg(Agg *node);
Phase 1 of read-only-plans project: cause executor state nodes to point to plan nodes, not vice-versa. All executor state nodes now inherit from struct PlanState. Copying of plan trees has been simplified by not storing a list of SubPlans in Plan nodes (eliminating duplicate links). The executor still needs such a list, but it can build it during ExecutorStart since it has to scan the plan tree anyway. No initdb forced since no stored-on-disk structures changed, but you will need a full recompile because of node-numbering changes.
2002-12-05 16:50:39 +01:00
extern AggState *ExecInitAgg(Agg *node, EState *estate);
extern TupleTableSlot *ExecAgg(AggState *node);
extern void ExecEndAgg(AggState *node);
extern void ExecReScanAgg(AggState *node, ExprContext *exprCtxt);
Another pgindent run. Fixes enum indenting, and improves #endif spacing. Also adds space for one-line comments.
2001-10-28 07:26:15 +01:00
Improve planner's estimation of the space needed for HashAgg plans: look at the actual aggregate transition datatypes and the actual overhead needed by nodeAgg.c, instead of using pessimistic round numbers. Per a discussion with Michael Tiemann.
2005-01-28 20:34:28 +01:00
extern Size hash_agg_entry_size(int numAggs);
Restructure representation of aggregate functions so that they have pg_proc entries, per pghackers discussion. This fixes aggregates to live in namespaces, and also simplifies/speeds up lookup in parse_func.c. Also, add a 'proimplicit' flag to pg_proc that controls whether a type coercion function may be invoked implicitly, or only explicitly. The current settings of these flags are more permissive than I would like, but we will need to debate and refine the behavior; for now, I avoided breaking regression tests as much as I could.
2002-04-11 22:00:18 +02:00
extern Datum aggregate_dummy(PG_FUNCTION_ARGS);
New pgindent run with fixes suggested by Tom. Patch manually reviewed, initdb/regression tests pass.
2001-11-05 18:46:40 +01:00
#endif /* NODEAGG_H */