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- /*-------------------------------------------------------------------------
- *
- * parse_agg.h
- * handle aggregates and window functions in parser
- *
- * Portions Copyright (c) 1996-2022, 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, bool groupDistinct, 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_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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