Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/18368#discussion_r124299127
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/SparkSqlParser.scala ---
@@ -230,11 +230,24 @@ class SparkSqlAstBuilder(conf: SQLConf) extends
AstBuilder(conf) {
}
/**
- * Create a [[RefreshTable]] logical plan.
+ * Create a [[RefreshResource]] logical plan.
*/
override def visitRefreshResource(ctx: RefreshResourceContext):
LogicalPlan = withOrigin(ctx) {
- val resourcePath = remainder(ctx.REFRESH.getSymbol).trim
- RefreshResource(resourcePath)
+ val path = if (ctx.STRING != null) string(ctx.STRING) else
extractUnquotedResourcePath(ctx)
+ RefreshResource(path)
+ }
+
+ private def extractUnquotedResourcePath(ctx: RefreshResourceContext):
String = withOrigin(ctx) {
+ val unquotedPath = remainder(ctx.REFRESH.getSymbol).trim
+ validate(
+ unquotedPath != null && !unquotedPath.isEmpty,
+ "Resource paths cannot be empty in REFRESH statements. Use / to
match everything",
+ ctx)
+ validate(
+ !unquotedPath.contains(' '),
--- End diff --
How about the other space `\r\n\t`?
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