postgres/src/include/parser/parse_agg.h

/*-------------------------------------------------------------------------
 *
 * parse_agg.h
 *	  handle aggregates in parser
 *
 * Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * $Id: parse_agg.h,v 1.26 2003/06/06 15:04:03 tgl Exp $
 *
 *-------------------------------------------------------------------------
 */
#ifndef PARSE_AGG_H
#define PARSE_AGG_H

#include "parser/parse_node.h"

extern void transformAggregateCall(ParseState *pstate, Aggref *agg);

extern void parseCheckAggregates(ParseState *pstate, Query *qry);

#endif   /* PARSE_AGG_H */
Break parser functions into smaller files, group together. 1997-11-25 22:07:18 +00:00			`/*-------------------------------------------------------------------------`
			`*`
			`* parse_agg.h`
Fix parse_agg.c to detect ungrouped Vars in sub-SELECTs; remove code that used to do it in planner. That was an ancient kluge that was never satisfactory; errors should be detected at parse time when possible. But at the time we didn't have the support mechanism (expression_tree_walker et al) to make it convenient to do in the parser. 2003-01-17 03:25:04 +00:00			`* handle aggregates in parser`
Break parser functions into smaller files, group together. 1997-11-25 22:07:18 +00:00			`*`
Update copyright to 2002. 2002-06-20 20:29:54 +00:00			`* Portions Copyright (c) 1996-2002, 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 05:58:53 +00:00			`* Portions Copyright (c) 1994, Regents of the University of California`
Break parser functions into smaller files, group together. 1997-11-25 22:07:18 +00:00			`*`
Implement outer-level aggregates to conform to the SQL spec, with extensions to support our historical behavior. An aggregate belongs to the closest query level of any of the variables in its argument, or the current query level if there are no variables (e.g., COUNT(*)). The implementation involves adding an agglevelsup field to Aggref, and treating outer aggregates like outer variables at planning time. 2003-06-06 15:04:03 +00:00			`* $Id: parse_agg.h,v 1.26 2003/06/06 15:04:03 tgl Exp $`
Break parser functions into smaller files, group together. 1997-11-25 22:07:18 +00:00			`*`
			`*-------------------------------------------------------------------------`
			`*/`
			`#ifndef PARSE_AGG_H`
			`#define PARSE_AGG_H`

Change #include's to use <> and "" as appropriate. 1999-07-15 23:04:24 +00:00			`#include "parser/parse_node.h"`
Break parser functions into smaller files, group together. 1997-11-25 22:07:18 +00:00
Implement outer-level aggregates to conform to the SQL spec, with extensions to support our historical behavior. An aggregate belongs to the closest query level of any of the variables in its argument, or the current query level if there are no variables (e.g., COUNT(*)). The implementation involves adding an agglevelsup field to Aggref, and treating outer aggregates like outer variables at planning time. 2003-06-06 15:04:03 +00:00			`extern void transformAggregateCall(ParseState pstate, Aggref agg);`

Fix parse_agg.c to detect ungrouped Vars in sub-SELECTs; remove code that used to do it in planner. That was an ancient kluge that was never satisfactory; errors should be detected at parse time when possible. But at the time we didn't have the support mechanism (expression_tree_walker et al) to make it convenient to do in the parser. 2003-01-17 03:25:04 +00:00			`extern void parseCheckAggregates(ParseState pstate, Query qry);`
Another pgindent run. Fixes enum indenting, and improves #endif spacing. Also adds space for one-line comments. 2001-10-28 06:26:15 +00:00
New pgindent run with fixes suggested by Tom. Patch manually reviewed, initdb/regression tests pass. 2001-11-05 17:46:40 +00:00			`#endif /* PARSE_AGG_H */`