sunjincheng created FLINK-11243: ----------------------------------- Summary: GroupBy udf() can not be select in TableAPI Key: FLINK-11243 URL: https://issues.apache.org/jira/browse/FLINK-11243 Project: Flink Issue Type: Bug Components: Table API & SQL Affects Versions: 1.8.0 Reporter: sunjincheng
The group key can not be select in the follows TableAPI: {code:java} val result = order .groupBy('o_time.substring(1, 16)) .select('o_time.substring(1, 16), 'o_id.count){code} Exception: {code:java} org.apache.flink.table.api.ValidationException: Cannot resolve field [o_time] given input [('o_time).substring(1, 16), TMP_0]. at org.apache.flink.table.plan.logical.LogicalNode.failValidation(LogicalNode.scala:156){code} BTW, We can only use the following description to avoid the above problem. {code:java} val result = order .select('o_id, 'c_id, 'o_time.substring(1, 16) as 'key) .groupBy('key) .select('key, 'o_id.count) {code} But I think it is better to make `groupby udf()` can be select in TableAPI. What do you think? -- This message was sent by Atlassian JIRA (v7.6.3#76005)