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Posted to issues@calcite.apache.org by "bingfeng.guo (Jira)" <ji...@apache.org> on 2021/11/14 08:52:00 UTC
[jira] [Created] (CALCITE-4887) Filter subQuery remove tot fully optimized
bingfeng.guo created CALCITE-4887:
-------------------------------------
Summary: Filter subQuery remove tot fully optimized
Key: CALCITE-4887
URL: https://issues.apache.org/jira/browse/CALCITE-4887
Project: Calcite
Issue Type: Improvement
Reporter: bingfeng.guo
for example:
```sql
SELECT
count(1)
FROM
SSB.P_LINEORDER as P_LINEORDER
LEFT JOIN SSB.PART as PART ON P_LINEORDER.LO_PARTKEY = PART.P_PARTKEY
LEFT JOIN SSB.DATES as DATES ON P_LINEORDER.LO_ORDERDATE = DATES.D_DATEKEY
LEFT JOIN SSB.CUSTOMER as CUSTOMER ON P_LINEORDER.LO_CUSTKEY = CUSTOMER.C_CUSTKEY
LEFT JOIN SSB.SUPPLIER as SUPPLIER ON P_LINEORDER.LO_SUPPKEY = SUPPLIER.S_SUPPKEY
WHERE
P_LINEORDER.LO_ORDERDATE = '1992-01-01'
or (
P_LINEORDER.LO_ORDERDATE in (
select
D_DATEKEY
from
SSB.DATES
where
DATES.D_DATEKEY = '1992-01-01'
)
)
LIMIT
500
```
plan is
```
LimitRel(ctx=[], fetch=[500])
AggregateRel(group-set=[[]], groups=[null], EXPR$0=[COUNT()])
ProjectRel(ctx=[])
FilterRel(condition=[OR(=($5, 1992-01-01), CAST(AND(IS NOT NULL($65), <>($62, 0))):BOOLEAN)])
JoinRel(condition=[=($5, $64)], joinType=[left])
JoinRel(condition=[true], joinType=[inner])
JoinRel(condition=[=($4, $55)], joinType=[left])
JoinRel(condition=[=($2, $47)], joinType=[left])
JoinRel(condition=[=($5, $30)], joinType=[left])
JoinRel(condition=[=($3, $21)], joinType=[left])
TableScan(table=[[SSB, P_LINEORDER]], fields=[[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20]])
TableScan(table=[[SSB, PART]], fields=[[0, 1, 2, 3, 4, 5, 6, 7, 8]])
TableScan(table=[[SSB, DATES]], fields=[[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16]])
TableScan(table=[[SSB, CUSTOMER]], fields=[[0, 1, 2, 3, 4, 5, 6, 7]])
TableScan(table=[[SSB, SUPPLIER]], fields=[[0, 1, 2, 3, 4, 5, 6]])
AggregateRel(group-set=[[]], groups=[null], c=[COUNT()], ck=[COUNT($0)])
ProjectRel(D_DATEKEY=[$0])
FilterRel(condition=[=($0, 1992-01-01)])
TableScan(table=[[SSB, DATES]], fields=[[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16]])
AggregateRel(group-set=[[0, 1]], groups=[null])
ProjectRel(D_DATEKEY=[$0], i=[true])
FilterRel(condition=[=($0, 1992-01-01)])
TableScan(table=[[SSB, DATES]], fields=[[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16]])
```
But the optimal plan should be
```
LimitRel(fetch=[500])
AggregateRel(group-set=[[]], groups=[null], EXPR$0=[COUNT()])
ProjectRel(ctx=[])
FilterRel(condition=[=($5, 1992-01-01)])
JoinRel(condition=[=($5, $62)], joinType=[inner])
JoinRel(condition=[=($4, $55)], joinType=[left])
JoinRel(condition=[=($2, $47)], joinType=[left])
JoinRel(condition=[=($5, $30)], joinType=[left])
JoinRel(condition=[=($3, $21)], joinType=[left])
TableScan(table=[[SSB, P_LINEORDER]], fields=[[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20]])
TableScan(table=[[SSB, PART]], fields=[[0, 1, 2, 3, 4, 5, 6, 7, 8]])
TableScan(table=[[SSB, DATES]], fields=[[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16]])
TableScan(table=[[SSB, CUSTOMER]], fields=[[0, 1, 2, 3, 4, 5, 6, 7]])
TableScan(table=[[SSB, SUPPLIER]], fields=[[0, 1, 2, 3, 4, 5, 6]])
AggregateRel(group-set=[[0]], groups=[null])
ProjectRel(D_DATEKEY=[$0])
FilterRel(condition=[=($0, 1992-01-01)])
TableScan(table=[[SSB, DATES]], fields=[[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16]])
```
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