== Parsed Logical Plan ==
GlobalLimit 21
+- LocalLimit 21
+- Project [cast(hostname#78 as string) AS hostname#84, cast(correct_count#79L as string) AS correct_count#85]
+- LocalRelation <empty>, [hostname#78, correct_count#79L]
== Analyzed Logical Plan ==
hostname: string, correct_count: string
GlobalLimit 21
+- LocalLimit 21
+- Project [cast(hostname#78 as string) AS hostname#84, cast(correct_count#79L as string) AS correct_count#85]
+- LocalRelation <empty>, [hostname#78, correct_count#79L]
== Optimized Logical Plan ==
LocalRelation <empty>, [hostname#84, correct_count#85]
== Physical Plan ==
LocalTableScan <empty>, [hostname#84, correct_count#85]
