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Move the logic that builds relation col list into a function (#4964)

pull/4973/head
Onur Tirtir 2021-05-10 20:01:28 +03:00 committed by GitHub
parent 59fea712e2
commit 7def297a3b
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 34 additions and 21 deletions
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55
src/backend/columnar/columnar_tableam.c
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@ -109,6 +109,7 @@ static void ColumnarProcessUtility(PlannedStmt *pstmt,
QueryCompletionCompat *completionTag);
static bool ConditionalLockRelationWithTimeout(Relation rel, LOCKMODE lockMode,
int timeout, int retryInterval);
static List * NeededColumnsList(TupleDesc tupdesc, Bitmapset *attr_needed);
static void LogRelationStats(Relation rel, int elevel);
static void TruncateColumnar(Relation rel, int elevel);
static HeapTuple ColumnarSlotCopyHeapTuple(TupleTableSlot *slot);
@ -212,17 +213,7 @@ static ColumnarReadState *
init_columnar_read_state(Relation relation, TupleDesc tupdesc, Bitmapset *attr_needed,
List *scanQual)
{
List *neededColumnList = NIL;
for (int i = 0; i < tupdesc->natts; i++)
{
if (bms_is_member(i, attr_needed) && !tupdesc->attrs[i].attisdropped)
{
/* attr_needed is 0-indexed; neededColumnList is 1-indexed */
neededColumnList = lappend_int(neededColumnList, i + 1);
}
}
List *neededColumnList = NeededColumnsList(tupdesc, attr_needed);
ColumnarReadState *readState = ColumnarBeginRead(relation, tupdesc, neededColumnList,
scanQual);
@ -615,16 +606,10 @@ columnar_relation_copy_for_cluster(Relation OldHeap, Relation NewHeap,
columnarOptions,
targetDesc);
List *projectedColumnList = NIL;
for (int i = 0; i < sourceDesc->natts; i++)
{
if (!sourceDesc->attrs[i].attisdropped)
{
/* projectedColumnList is 1-indexed */
projectedColumnList = lappend_int(projectedColumnList, i + 1);
}
}
/* we need all columns */
int natts = OldHeap->rd_att->natts;
Bitmapset *attr_needed = bms_add_range(NULL, 0, natts - 1);
List *projectedColumnList = NeededColumnsList(sourceDesc, attr_needed);
ColumnarReadState *readState = ColumnarBeginRead(OldHeap, sourceDesc,
projectedColumnList,
NULL);
@ -647,6 +632,34 @@ columnar_relation_copy_for_cluster(Relation OldHeap, Relation NewHeap,
}
/*
* NeededColumnsList returns a list of AttrNumber's for the columns that
* are not dropped and specified by attr_needed.
*/
static List *
NeededColumnsList(TupleDesc tupdesc, Bitmapset *attr_needed)
{
List *columnList = NIL;
for (int i = 0; i < tupdesc->natts; i++)
{
if (tupdesc->attrs[i].attisdropped)
{
continue;
}
/* attr_needed is 0-indexed but columnList is 1-indexed */
if (bms_is_member(i, attr_needed))
{
AttrNumber varattno = i + 1;
columnList = lappend_int(columnList, varattno);
}
}
return columnList;
}
/*
* columnar_vacuum_rel implements VACUUM without FULL option.
*/