yiming.xu created KYLIN-3284:
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Summary: Refactor all OLAPRel computeSelfCost
Key: KYLIN-3284
URL: https://issues.apache.org/jira/browse/KYLIN-3284
Project: Kylin
Issue Type: Improvement
Components: Query Engine
Affects Versions: v2.3.0
Reporter: yiming.xu
Assignee: yiming.xu
for queries like:
select lstg_format_name from test_kylin_fact order by case
when 1=1 then
cal_dt
ELSE
seller_id
end
the expected logical plan after volcano is:
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]])
however the actual is:
OLAPToEnumerableConverter
OLAPLimitRel(ctx=[], fetch=[50000])
OLAPSortRel(sort0=[$1], dir0=[ASC], ctx=[])
OLAPProjectRel(LSTG_FORMAT_NAME=[$3], EXPR$1=[CASE(=(1, 1), $2,
CAST($7):DATE)], 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]])
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