[GitHub] [spark] jackierwzhang commented on a change in pull request #35385: [WIP][SPARK-38094] Enable matching schema column names by field ids

[GitBox <gi...@apache.org>]

jackierwzhang commented on a change in pull request #35385:
URL: https://github.com/apache/spark/pull/35385#discussion_r799043344



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File path: sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala
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@@ -934,6 +934,23 @@ object SQLConf {
     .intConf
     .createWithDefault(4096)
 
+   val PARQUET_FIELD_ID_ENABLED =
+    buildConf("spark.sql.parquet.fieldId.enabled")
+      .doc("Field ID is a native field of the Parquet schema spec. When enabled, Parquet readers" +
+        " will use field IDs (if present) in the requested Spark schema to look up Parquet" +

Review comment:
       It would try to match by id if id exists, otherwise, it would try to match by name. 




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