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Posted to reviews@spark.apache.org by GitBox <gi...@apache.org> on 2022/11/04 07:31:54 UTC

[GitHub] [spark] MaxGekk commented on a diff in pull request #38498: [SPARK-40769][CORE][SQL] Migrate type check failures of aggregate expressions onto error classes

MaxGekk commented on code in PR #38498:
URL: https://github.com/apache/spark/pull/38498#discussion_r1013693767


##########
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/aggregate/Count.scala:
##########
@@ -56,9 +59,17 @@ case class Count(children: Seq[Expression]) extends DeclarativeAggregate {
 
   override def checkInputDataTypes(): TypeCheckResult = {
     if (children.isEmpty && !SQLConf.get.getConf(SQLConf.ALLOW_PARAMETERLESS_COUNT)) {
-      TypeCheckResult.TypeCheckFailure(s"$prettyName requires at least one argument. " +
-        s"If you have to call the function $prettyName without arguments, set the legacy " +
-        s"configuration `${SQLConf.ALLOW_PARAMETERLESS_COUNT.key}` as true")
+      DataTypeMismatch(
+        errorSubClass = "WRONG_NUM_ARGS_WITH_SUGGESTION",
+        messageParameters = Map(
+          "functionName" -> toSQLId(prettyName),
+          "expectedNum" -> " >= 1",
+          "actualNum" -> "0",
+          "legacyNum" -> "0",
+          "legacyConfKey" -> SQLConf.ALLOW_PARAMETERLESS_COUNT.key,

Review Comment:
   Please, use `toSQLConf()` to quote the config.



##########
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/aggregate/Count.scala:
##########
@@ -56,9 +59,17 @@ case class Count(children: Seq[Expression]) extends DeclarativeAggregate {
 
   override def checkInputDataTypes(): TypeCheckResult = {
     if (children.isEmpty && !SQLConf.get.getConf(SQLConf.ALLOW_PARAMETERLESS_COUNT)) {
-      TypeCheckResult.TypeCheckFailure(s"$prettyName requires at least one argument. " +
-        s"If you have to call the function $prettyName without arguments, set the legacy " +
-        s"configuration `${SQLConf.ALLOW_PARAMETERLESS_COUNT.key}` as true")
+      DataTypeMismatch(
+        errorSubClass = "WRONG_NUM_ARGS_WITH_SUGGESTION",
+        messageParameters = Map(
+          "functionName" -> toSQLId(prettyName),
+          "expectedNum" -> " >= 1",
+          "actualNum" -> "0",
+          "legacyNum" -> "0",
+          "legacyConfKey" -> SQLConf.ALLOW_PARAMETERLESS_COUNT.key,
+          "legacyConfValue" -> true.toString

Review Comment:
   `true` should be quoted by `""`, see `error-classes.json`. For instance,
   https://github.com/apache/spark/blob/5741d38ee272418a919fe7d102514c221a6e741a/core/src/main/resources/error/error-classes.json#L10
   
   I would add new helper `toSQLConfVal()` like:
   ```scala
     def toSQLConfVal(conf: String): String = {
       quoteByDefault(conf)
     }
   ```



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