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https://issues.apache.org/jira/browse/BEAM-3481?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Kenneth Knowles reassigned BEAM-3481:
-------------------------------------
Assignee: (was: Anton Kedin)
> Query with subquery and aggregates cannot be implemented.
> ---------------------------------------------------------
>
> Key: BEAM-3481
> URL: https://issues.apache.org/jira/browse/BEAM-3481
> Project: Beam
> Issue Type: Bug
> Components: dsl-sql
> Affects Versions: 2.2.0
> Reporter: Austin Haas
> Priority: Major
>
> This query results in the error below:
> {noformat}
> "SELECT (COUNT(`p`))
> FROM (SELECT `p`
> FROM `contains`
> GROUP BY `p`) AS `t1`"{noformat}
> This works correctly:
> {noformat}
> "SELECT (COUNT(`p`))
> FROM (SELECT `p`, CURRENT_TIME
> FROM `contains`
> GROUP BY `p`) AS `t1`"{noformat}
> Error:
>
> {noformat}
> [nREPL-worker-5] INFO
> org.apache.beam.sdk.extensions.sql.impl.planner.BeamQueryPlanner - SQL:
> SELECT COUNT(`t1`.`p`)
> FROM (SELECT `contains`.`p`
> FROM `contains` AS `contains`
> GROUP BY `contains`.`p`) AS `t1`
> [nREPL-worker-5] INFO
> org.apache.beam.sdk.extensions.sql.impl.planner.BeamQueryPlanner - SQLPlan>
> LogicalAggregate(group=[{}], EXPR$0=[COUNT()])
> LogicalAggregate(group=[{0}])
> LogicalProject(p=[$0])
> LogicalTableScan(table=[[contains]])
> CannotPlanException Node [rel#157:Subset#3.BEAM_LOGICAL.[]] could not be
> implemented; planner state:
> Root: rel#157:Subset#3.BEAM_LOGICAL.[]
> Original rel:
> LogicalAggregate(subset=[rel#157:Subset#3.BEAM_LOGICAL.[]], group=[{}],
> EXPR$0=[COUNT()]): rowcount = 1.0, cumulative cost = {1.125 rows, 0.0 cpu,
> 0.0 io}, id = 155
> LogicalAggregate(subset=[rel#154:Subset#2.NONE.[]], group=[{0}]): rowcount =
> 10.0, cumulative cost = {10.0 rows, 0.0 cpu, 0.0 io}, id = 153
> LogicalProject(subset=[rel#152:Subset#1.NONE.[]], p=[$0]): rowcount = 100.0,
> cumulative cost = {100.0 rows, 100.0 cpu, 0.0 io}, id = 151
> LogicalTableScan(subset=[rel#150:Subset#0.NONE.[]], table=[[contains]]):
> rowcount = 100.0, cumulative cost = {100.0 rows, 101.0 cpu, 0.0 io}, id = 146
> Sets:
> Set#0, type: RecordType(VARCHAR p, VARCHAR s, BIGINT c)
> rel#150:Subset#0.NONE.[], best=null, importance=0.6561
> rel#146:LogicalTableScan.NONE.[](table=[contains]), rowcount=100.0,
> cumulative cost={inf}
> rel#162:Subset#0.BEAM_LOGICAL.[], best=rel#164, importance=0.32805
> rel#164:BeamIOSourceRel.BEAM_LOGICAL.[](table=[contains]), rowcount=100.0,
> cumulative cost={100.0 rows, 101.0 cpu, 0.0 io}
> Set#1, type: RecordType(VARCHAR p)
> rel#152:Subset#1.NONE.[], best=null, importance=0.7290000000000001
> rel#151:LogicalProject.NONE.[](input=rel#150:Subset#0.NONE.[],p=$0),
> rowcount=100.0, cumulative cost={inf}
> rel#159:Subset#1.BEAM_LOGICAL.[], best=rel#163,
> importance=0.36450000000000005
>
> rel#163:BeamProjectRel.BEAM_LOGICAL.[](input=rel#162:Subset#0.BEAM_LOGICAL.[],p=$0),
> rowcount=100.0, cumulative cost={200.0 rows, 201.0 cpu, 0.0 io}
> Set#2, type: RecordType(VARCHAR p)
> rel#154:Subset#2.NONE.[], best=null, importance=0.81
> rel#153:LogicalAggregate.NONE.[](input=rel#152:Subset#1.NONE.[],group={0}),
> rowcount=10.0, cumulative cost={inf}
> rel#161:Subset#2.BEAM_LOGICAL.[], best=rel#160, importance=0.405
>
> rel#160:BeamAggregationRel.BEAM_LOGICAL.[](group={0},window=org.apache.beam.sdk.transforms.windowing.GlobalWindows,trigger=Repeatedly.forever(AfterWatermark.pastEndOfWindow())),
> rowcount=10.0, cumulative cost={210.0 rows, 201.0 cpu, 0.0 io}
> Set#3, type: RecordType(BIGINT EXPR$0)
> rel#156:Subset#3.NONE.[], best=null, importance=0.9
>
> rel#155:LogicalAggregate.NONE.[](input=rel#154:Subset#2.NONE.[],group={},EXPR$0=COUNT()),
> rowcount=1.0, cumulative cost={inf}
> rel#157:Subset#3.BEAM_LOGICAL.[], best=null,
> importance=1.0
>
> rel#158:AbstractConverter.BEAM_LOGICAL.[](input=rel#156:Subset#3.NONE.[],convention=BEAM_LOGICAL,sort=[]),
> rowcount=1.0, cumulative cost={inf}
> org.apache.beam.sdks.java.extensions.sql.repackaged.org.apache.calcite.plan.volcano.RelSubset$CheapestPlanReplacer.visit
> (RelSubset.java:441)
> {noformat}
>
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