yiming.xu created KYLIN-3283:
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Summary: Support values RelNode
Key: KYLIN-3283
URL: https://issues.apache.org/jira/browse/KYLIN-3283
Project: Kylin
Issue Type: New Feature
Components: Query Engine
Affects Versions: v2.3.0
Reporter: yiming.xu
Assignee: yiming.xu
for queries like:
select leaf_categ_id, sum(price) as sum_price from test_kylin_fact group by
leaf_categ_id
union all
select 1 as leaf_categ_id2, 2 as sum_price2
the expected logical plan after volcano is:
{code:java}
OLAPToEnumerableConverter
OLAPLimitRel(ctx=[], fetch=[50000])
OLAPAggregateRel(group=[{}], EXPR$0=[SUM($0)], ctx=[])
OLAPProjectRel(count=[$1], ctx=[])
OLAPSortRel(sort0=[$1], dir0=[DESC], ctx=[])
OLAPAggregateRel(group=[{0}], count=[COUNT()], ctx=[])
OLAPProjectRel(LSTG_FORMAT_NAME=[$3], ctx=[])
OLAPTableScan(table=[[DEFAULT, TEST_KYLIN_FACT]], ctx=[],
fields=[[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
20, 21, 22, 23, 24, 25, 26]])
{code}
however the actual is:
{code:java}
OLAPToEnumerableConverter
OLAPLimitRel(ctx=[], fetch=[50000])
OLAPUnionRel(all=[true], ctx=[], all=[true])
OLAPAggregateRel(group=[{0}], SUM_PRICE=[SUM($1)], ctx=[])
OLAPProjectRel(LEAF_CATEG_ID=[$4], PRICE=[$8], ctx=[])
OLAPTableScan(table=[[DEFAULT, TEST_KYLIN_FACT]], ctx=[], fields=[[0,
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22,
23, 24, 25, 26]])
OLAPProjectRel(LEAF_CATEG_ID2=[1], SUM_PRICE2=[2], ctx=[])
OLAPValuesRel(type=[RecordType(INTEGER ZERO)], tuples=[[{ 0 }]])
{code}
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