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/*-------------------------------------------------------------------------
*
* parse_agg.h
* handle aggregates and window functions in parser
*
* Portions Copyright (c) 1996-2016, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/include/parser/parse_agg.h
*
*-------------------------------------------------------------------------
*/
#ifndef PARSE_AGG_H
#define PARSE_AGG_H
#include "parser/parse_node.h"
extern void transformAggregateCall(ParseState *pstate, Aggref *agg,
List *args, List *aggorder,
bool agg_distinct);
extern Node *transformGroupingFunc(ParseState *pstate, GroupingFunc *g);
extern void transformWindowFuncCall(ParseState *pstate, WindowFunc *wfunc,
WindowDef *windef);
extern void parseCheckAggregates(ParseState *pstate, Query *qry);
extern List *expand_grouping_sets(List *groupingSets, int limit);
extern int get_aggregate_argtypes(Aggref *aggref, Oid *inputTypes);
extern Oid resolve_aggregate_transtype(Oid aggfuncid,
Oid aggtranstype,
Oid *inputTypes,
int numArguments);
extern void build_aggregate_transfn_expr(Oid *agg_input_types,
int agg_num_inputs,
int agg_num_direct_inputs,
bool agg_variadic,
Oid agg_state_type,
Oid agg_input_collation,
Oid transfn_oid,
Oid invtransfn_oid,
Expr **transfnexpr,
Expr **invtransfnexpr);
extern void build_aggregate_combinefn_expr(Oid agg_state_type,
Oid agg_input_collation,
Oid combinefn_oid,
Expr **combinefnexpr);
extern void build_aggregate_serialfn_expr(Oid serialfn_oid,
Expr **serialfnexpr);
extern void build_aggregate_deserialfn_expr(Oid deserialfn_oid,
Expr **deserialfnexpr);
extern void build_aggregate_finalfn_expr(Oid *agg_input_types,
int num_finalfn_inputs,
Oid agg_state_type,
Oid agg_result_type,
Oid agg_input_collation,
Oid finalfn_oid,
Expr **finalfnexpr);
#endif /* PARSE_AGG_H */
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