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SQL-language functions are now callable in ordinary fmgr contexts ...

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for example, an SQL function can be used in a functional index.  (I make
no promises about speed, but it'll work ;-).)  Clean up and simplify
handling of functions returning sets.
This commit is contained in:
Tom Lane
2000-08-24 03:29:15 +00:00
parent 87523ab8db
commit 782c16c6a1
35 changed files with 889 additions and 921 deletions
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14
src/include/executor/executor.h
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2000, PostgreSQL, Inc
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: executor.h,v 1.48 2000/08/21 20:55:29 tgl Exp $
* $Id: executor.h,v 1.49 2000/08/24 03:29:10 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -78,14 +78,20 @@ extern char *GetAttributeByNum(TupleTableSlot *slot, AttrNumber attrno,
bool *isNull);
extern char *GetAttributeByName(TupleTableSlot *slot, char *attname,
bool *isNull);
extern Datum ExecMakeFunctionResult(FunctionCachePtr fcache,
List *arguments,
ExprContext *econtext,
bool *isNull,
ExprDoneCond *isDone);
extern Datum ExecEvalExpr(Node *expression, ExprContext *econtext,
bool *isNull, bool *isDone);
bool *isNull, ExprDoneCond *isDone);
extern Datum ExecEvalExprSwitchContext(Node *expression, ExprContext *econtext,
bool *isNull, bool *isDone);
bool *isNull, ExprDoneCond *isDone);
extern bool ExecQual(List *qual, ExprContext *econtext, bool resultForNull);
extern int ExecTargetListLength(List *targetlist);
extern int ExecCleanTargetListLength(List *targetlist);
extern TupleTableSlot *ExecProject(ProjectionInfo *projInfo, bool *isDone);
extern TupleTableSlot *ExecProject(ProjectionInfo *projInfo,
ExprDoneCond *isDone);
/*
* prototypes from functions in execScan.c