MaxGekk commented on code in PR #41191:
URL: https://github.com/apache/spark/pull/41191#discussion_r1196979589
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/parser/AstBuilder.scala:
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@@ -3187,7 +3189,37 @@ class AstBuilder extends
SqlBaseParserBaseVisitor[AnyRef] with SQLConfHelper wit
ctx: PropertyListContext): Map[String, String] = withOrigin(ctx) {
val properties = ctx.property.asScala.map { property =>
val key = visitPropertyKey(property.key)
- val value = visitPropertyValue(property.value)
+ // If the expression provided for the option value is a literal, use the
string
+ // representation of the contents of the literal value provided here.
Otherwise, if this
+ // expression is constant but non-literal, evaluate the expression and
use its value instead.
+ val value = if (property.value == null) {
+ null
+ } else {
+ val parsed = expression(property.value)
+ def error: Throwable = {
+ new ParseException(
+ errorClass = "INVALID_SQL_SYNTAX",
+ messageParameters = Map(
+ "inputString" ->
+ s"option or property key $key is invalid; only constant
expressions are supported"),
+ ctx)
+ }
+ val plan = try {
+ val analyzer: Analyzer = ResolveDefaultColumns.DefaultColumnAnalyzer
+ val analyzed = analyzer.execute(Project(Seq(Alias(parsed, "col")()),
OneRowRelation()))
+ analyzer.checkAnalysis(analyzed)
+ ConstantFolding(analyzed)
+ } catch {
+ case _: AnalysisException => throw error
+ }
+ val result: Expression = plan.collectFirst {
+ case Project(Seq(a: Alias), OneRowRelation()) => a.child
+ }.get
+ result match {
+ case expr if expr.foldable => expr.eval().toString
Review Comment:
How about to wrap `expr` by the `Cast` to string expression and invoke
`eval`. `toString` and casting to string can output different results if we
care of them.
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