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https://issues.apache.org/jira/browse/HUDI-2259?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17402474#comment-17402474
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ASF GitHub Bot commented on HUDI-2259:
--------------------------------------
dongkelun commented on pull request #3380:
URL: https://github.com/apache/hudi/pull/3380#issuecomment-903049257
@pengzhiwei2018 Hi,can you please take a look?
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> [SQL]Support referencing subquery with column aliases by table alias in merge
> into
> ----------------------------------------------------------------------------------
>
> Key: HUDI-2259
> URL: https://issues.apache.org/jira/browse/HUDI-2259
> Project: Apache Hudi
> Issue Type: Improvement
> Components: Spark Integration
> Reporter: 董可伦
> Assignee: 董可伦
> Priority: Major
> Labels: pull-request-available
> Fix For: 0.9.0
>
>
>
> Example:
> {code:java}
> val tableName = "test_hudi_table"
> spark.sql(
> s"""
> create table ${tableName} (
> id int,
> name string,
> price double,
> ts long
> ) using hudi
> options (
> primaryKey = 'id',
> type = 'cow'
> )
> location '/tmp/${tableName}'
> """.stripMargin)
> spark.sql(
> s"""
> merge into $tableName as t0
> using (
> select 1, 'a1', 12, 1003
> ) s0 (id,name,price,ts)
> on s0.id = t0.id
> when matched and id != 1 then update set *
> when matched and s0.id = 1 then delete
> when not matched then insert *
> """.stripMargin)
> {code}
> It will throw an exception:
> {code:java}
> Exception in thread "main" org.apache.spark.sql.AnalysisException: Cannot
> resolve 's0.id in (`s0.id` = `t0.id`), the input columns is: id#4, name#5,
> price#6, ts#7, _hoodie_commit_time#8, _hoodie_commit_seqno#9,
> _hoodie_record_key#10, _hoodie_partition_path#11, _hoodie_file_name#12,
> id#13, name#14, price#15, ts#16L;Exception in thread "main"
> org.apache.spark.sql.AnalysisException: Cannot resolve 's0.id in (`s0.id` =
> `t0.id`), the input columns is: id#4, name#5, price#6, ts#7,
> _hoodie_commit_time#8, _hoodie_commit_seqno#9, _hoodie_record_key#10,
> _hoodie_partition_path#11, _hoodie_file_name#12, id#13, name#14, price#15,
> ts#16L; at
> org.apache.spark.sql.hudi.analysis.HoodieResolveReferences.org$apache$spark$sql$hudi$analysis$HoodieResolveReferences$$resolveExpressionFrom(HoodieAnalysis.scala:292)
> at
> org.apache.spark.sql.hudi.analysis.HoodieResolveReferences$$anonfun$apply$1.applyOrElse(HoodieAnalysis.scala:160)
> at
> org.apache.spark.sql.hudi.analysis.HoodieResolveReferences$$anonfun$apply$1.applyOrElse(HoodieAnalysis.scala:103)
> at
> org.apache.spark.sql.catalyst.plans.logical.AnalysisHelper$$anonfun$resolveOperatorsUp$1$$anonfun$apply$1.apply(AnalysisHelper.scala:90)
> at
> org.apache.spark.sql.catalyst.plans.logical.AnalysisHelper$$anonfun$resolveOperatorsUp$1$$anonfun$apply$1.apply(AnalysisHelper.scala:90)
> at
> org.apache.spark.sql.catalyst.trees.CurrentOrigin$.withOrigin(TreeNode.scala:69)
> at
> org.apache.spark.sql.catalyst.plans.logical.AnalysisHelper$$anonfun$resolveOperatorsUp$1.apply(AnalysisHelper.scala:89)
> at
> org.apache.spark.sql.catalyst.plans.logical.AnalysisHelper$$anonfun$resolveOperatorsUp$1.apply(AnalysisHelper.scala:86)
> at
> org.apache.spark.sql.catalyst.plans.logical.AnalysisHelper$.allowInvokingTransformsInAnalyzer(AnalysisHelper.scala:194)
> at
> org.apache.spark.sql.catalyst.plans.logical.AnalysisHelper$class.resolveOperatorsUp(AnalysisHelper.scala:86)
> at
> org.apache.spark.sql.catalyst.plans.logical.LogicalPlan.resolveOperatorsUp(LogicalPlan.scala:29){code}
>
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