[GitHub] [spark] xuanyuanking commented on a change in pull request #26763: [SPARK-30125][SQL] Remove PostgreSQL dialect

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

xuanyuanking commented on a change in pull request #26763: [SPARK-30125][SQL] Remove PostgreSQL dialect
URL: https://github.com/apache/spark/pull/26763#discussion_r355470662
 
 

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 File path: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/TypeCoercion.scala
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 @@ -860,14 +853,12 @@ object TypeCoercion {
       case Add(l @ DateType(), r @ IntegerType()) => DateAdd(l, r)
       case Add(l @ IntegerType(), r @ DateType()) => DateAdd(r, l)
       case Subtract(l @ DateType(), r @ IntegerType()) => DateSub(l, r)
-      case Subtract(l @ DateType(), r @ DateType()) =>
-        if (SQLConf.get.usePostgreSQLDialect) DateDiff(l, r) else SubtractDates(l, r)
-      case Subtract(l @ TimestampType(), r @ TimestampType()) =>
-        SubtractTimestamps(l, r)
+      case Subtract(l @ DateType(), r @ DateType()) => DateDiff(l, r)
 
 Review comment:
   Yes, keep the #26112

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