sunjincheng created FLINK-10834:
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Summary: TableAPI flatten calculated value error
Key: FLINK-10834
URL: https://issues.apache.org/jira/browse/FLINK-10834
Project: Flink
Issue Type: Bug
Components: Table API & SQL
Reporter: sunjincheng
Fix For: 1.7.1
We have a UDF as follows:
<code>
object FuncRow extends ScalarFunction {
def eval(v: Int): Row = {
val version = "" + new Random().nextInt()
val row = new Row(3)
row.setField(0, version)
row.setField(1, version)
row.setField(2, version)
row
}
override def isDeterministic: Boolean = false
override def getResultType(signature: Array[Class[_]]): TypeInformation[_] =
Types.ROW(Types.STRING, Types.STRING, Types.STRING)
}
</code>
<code>
...
val data = new mutable.MutableList[(Int, Long, String)]
data.+=((1, 1L, "Hi"))
val ds = env.fromCollection(data).toTable(tEnv, 'a, 'b,'c)
.select(FuncRow('a).flatten()).as('v1, 'v2, 'v3)
...
</code>
The result is : -1189206469,-151367792,1988676906
The result expected by the user should be: v1==v2==v3 .
It looks the real reason is that there is no result of the reuse in codegen.
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