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Phase 3 of read-only-plans project: ExecInitExpr now builds expression

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execution state trees, and ExecEvalExpr takes an expression state tree
not an expression plan tree.  The plan tree is now read-only as far as
the executor is concerned.  Next step is to begin actually exploiting
this property.
This commit is contained in:
Tom Lane
2002-12-13 19:46:01 +00:00
parent 77b7a740f9
commit 3a4f7dde16
49 changed files with 993 additions and 815 deletions
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3
src/backend/executor/execTuples.c
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@ -15,7 +15,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/executor/execTuples.c,v 1.62 2002/12/12 15:49:28 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/executor/execTuples.c,v 1.63 2002/12/13 19:45:52 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -550,6 +550,7 @@ ExecInitNullTupleSlot(EState *estate, TupleDesc tupType)
* ExecTypeFromTL
*
* Generate a tuple descriptor for the result tuple of a targetlist.
* (A parse/plan tlist must be passed, not an ExprState tlist.)
* Note that resjunk columns, if any, are included in the result.
*
* Currently there are about 4 different places where we create