[
https://issues.apache.org/jira/browse/FLINK-6067?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
jingzhang updated FLINK-6067:
-----------------------------
Description:
{code}
val result = table.where('a < 60).select('a * 1.2, 'b / 2, 'c)
{code}
we run the above code in the Batch TableAPI/SQL, we would get the following
optimizedPlan
{code}
DataSetCalc(select=[*(a, 1.2E0) AS _c0, /(b, 2) AS _c1, c])
DataSetCalc(select=[a, b, c], where=[<(a, 60)])
DataSetScan(table=[[_DataSetTable_0]])
{code}
However, we run the above code in the Stream TableAPI/SQL, we would get the
following optimizedPlan
{code}
DataStreamCalc(select=[*(a, 1.2E0) AS _c0, /(b, 2) AS _c1, c], where=[<(a, 60)])
DataStreamScan(table=[[_DataStreamTable_0]])
{code}
we can find that in the batch tableAPI, the project and filterNode don't merge
into a single node. However, in the Stream tableAPI, these two nodes could
merge into one.
was:
{code}
val table1 = tEnv.scan( "tb1")
val table2 = tEnv.scan("tb2")
val result = table2
.where("d < 3")
.select('d *2, 'e, 'g.upperCase())
.unionAll(table1.select('a *2, 'b, 'c.upperCase()))
{code}
we run the above code in the Batch TableAPI/SQL, we would get the following
optimizedPlan
{code}
DataSetUnion(union=[_c0, e, _c2])
DataSetCalc(select=[*(d, 2) AS _c0, e, UPPER(g) AS _c2])
DataSetCalc(select=[d, e, g], where=[<(d, 3)])
BatchTableSourceScan(table=[[tb2]], fields=[d, e, g])
DataSetCalc(select=[*(a, 2) AS _c0, b, UPPER(c) AS _c2])
BatchTableSourceScan(table=[[tb1]], fields=[a, b, c])
{code}
However, we run the above code in the Stream TableAPI/SQL, we would get the
following optimizedPlan
{code}
DataStreamUnion(union=[_c0, e, _c2])
DataStreamCalc(select=[*(d, 2) AS _c0, e, UPPER(g) AS _c2], where=[<(d, 3)])
StreamTableSourceScan(table=[[tb2]], fields=[d, e, g])
DataStreamCalc(select=[*(a, 2) AS _c0, b, UPPER(c) AS _c2])
StreamTableSourceScan(table=[[tb1]], fields=[a, b, c])
{code}
we can find that in the batch tableAPI, the project and filterNode don't merge
into a single node. However, in the Stream tableAPI, these two nodes could
merge into one.
> ProjectNode and FilterNode cannot merge in Batch TableAPI/SQL
> -------------------------------------------------------------
>
> Key: FLINK-6067
> URL: https://issues.apache.org/jira/browse/FLINK-6067
> Project: Flink
> Issue Type: Bug
> Components: Table API & SQL
> Reporter: jingzhang
> Assignee: jingzhang
>
> {code}
> val result = table.where('a < 60).select('a * 1.2, 'b / 2, 'c)
> {code}
> we run the above code in the Batch TableAPI/SQL, we would get the following
> optimizedPlan
> {code}
> DataSetCalc(select=[*(a, 1.2E0) AS _c0, /(b, 2) AS _c1, c])
> DataSetCalc(select=[a, b, c], where=[<(a, 60)])
> DataSetScan(table=[[_DataSetTable_0]])
> {code}
> However, we run the above code in the Stream TableAPI/SQL, we would get the
> following optimizedPlan
> {code}
> DataStreamCalc(select=[*(a, 1.2E0) AS _c0, /(b, 2) AS _c1, c], where=[<(a,
> 60)])
> DataStreamScan(table=[[_DataStreamTable_0]])
> {code}
> we can find that in the batch tableAPI, the project and filterNode don't
> merge into a single node. However, in the Stream tableAPI, these two nodes
> could merge into one.
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