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体验新版 GitCode,发现更多精彩内容 >>
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57fdb2b0
编写于
3月 17, 2005
作者:
T
Tom Lane
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Update obsolete comment.
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72cbc598
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src/backend/executor/execTuples.c
src/backend/executor/execTuples.c
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src/backend/executor/execTuples.c
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57fdb2b0
...
...
@@ -15,7 +15,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/executor/execTuples.c,v 1.8
5 2005/03/16 21:38:07
tgl Exp $
* $PostgreSQL: pgsql/src/backend/executor/execTuples.c,v 1.8
6 2005/03/17 15:25:51
tgl Exp $
*
*-------------------------------------------------------------------------
*/
...
...
@@ -51,7 +51,7 @@
* Suppose we have a query such as retrieve (EMP.name) and we have
* a single SeqScan node in the query plan.
*
* At ExecStart()
* At Exec
utor
Start()
* ----------------
* - InitPlan() calls ExecCreateTupleTable() to create the tuple
* table which will hold tuples processed by the executor.
...
...
@@ -61,7 +61,7 @@
* table for the tuples returned by the access methods and the
* tuples resulting from performing target list projections.
*
* During ExecRun()
* During Exec
utor
Run()
* ----------------
* - SeqNext() calls ExecStoreTuple() to place the tuple returned
* by the access methods into the scan tuple slot.
...
...
@@ -69,11 +69,11 @@
* - ExecSeqScan() calls ExecStoreTuple() to take the result
* tuple from ExecProject() and place it into the result tuple slot.
*
* - ExecutePlan() calls Exec
Retrieve() which gets the tuple out of
* t
he slot passed to it (by direct access to slot->val, which is
*
ugly but not worth changing). this tuple is then returned
.
* - ExecutePlan() calls Exec
Select(), which passes the result slot
* t
o printtup(), which uses slot_getallattrs() to extract the
*
individual Datums for printing
.
*
* At ExecEnd()
* At Exec
utor
End()
* ----------------
* - EndPlan() calls ExecDropTupleTable() to clean up any remaining
* tuples left over from executing the query.
...
...
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