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First pass at set-returning-functions in FROM, by Joe Conway with

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some kibitzing from Tom Lane.  Not everything works yet, and there's
no documentation or regression test, but let's commit this so Joe
doesn't need to cope with tracking changes in so many files ...
This commit is contained in:
Tom Lane
2002-05-12 20:10:05 +00:00
parent 71009354c8
commit f9e4f611a1
48 changed files with 1813 additions and 329 deletions
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27
src/backend/nodes/readfuncs.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/nodes/readfuncs.c,v 1.120 2002/04/28 19:54:28 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/nodes/readfuncs.c,v 1.121 2002/05/12 20:10:03 tgl Exp $
*
* NOTES
* Most of the read functions for plan nodes are tested. (In fact, they
@ -651,6 +651,24 @@ _readSubqueryScan(void)
return local_node;
}
/* ----------------
* _readFunctionScan
*
* FunctionScan is a subclass of Scan
* ----------------
*/
static FunctionScan *
_readFunctionScan(void)
{
FunctionScan *local_node;
local_node = makeNode(FunctionScan);
_getScan((Scan *) local_node);
return local_node;
}
/* ----------------
* _readSort
*
@ -1514,6 +1532,11 @@ _readRangeTblEntry(void)
local_node->subquery = nodeRead(true); /* now read it */
break;
case RTE_FUNCTION:
token = pg_strtok(&length); /* eat :funcexpr */
local_node->funcexpr = nodeRead(true); /* now read it */
break;
case RTE_JOIN:
token = pg_strtok(&length); /* eat :jointype */
token = pg_strtok(&length); /* get jointype */
@ -2031,6 +2054,8 @@ parsePlanString(void)
return_value = _readTidScan();
else if (length == 12 && strncmp(token, "SUBQUERYSCAN", length) == 0)
return_value = _readSubqueryScan();
else if (length == 12 && strncmp(token, "FUNCTIONSCAN", length) == 0)
return_value = _readFunctionScan();
else if (length == 4 && strncmp(token, "SORT", length) == 0)
return_value = _readSort();
else if (length == 6 && strncmp(token, "AGGREG", length) == 0)