diff --git a/query/src/main/scala/filodb/query/LogicalPlan.scala b/query/src/main/scala/filodb/query/LogicalPlan.scala
index 40f8961c0..cb33cc11e 100644
--- a/query/src/main/scala/filodb/query/LogicalPlan.scala
+++ b/query/src/main/scala/filodb/query/LogicalPlan.scala
@@ -2,7 +2,6 @@ package filodb.query
 
 import filodb.core.query.{ColumnFilter, RangeParams, RvRange}
 import filodb.core.query.Filter.Equals
-import filodb.query.exec.TsCardExec
 
 //scalastyle:off number.of.types
 //scalastyle:off file.size.limit
@@ -185,7 +184,8 @@ object TsCardinalities {
 case class TsCardinalities(shardKeyPrefix: Seq[String],
                            numGroupByFields: Int,
                            version: Int = 1,
-                           datasets: Seq[String] = Seq()) extends LogicalPlan {
+                           datasets: Seq[String] = Seq(),
+                           userDatasets: String = "") extends LogicalPlan {
   import TsCardinalities._
 
   require(numGroupByFields >= 1 && numGroupByFields <= 3,
@@ -212,7 +212,7 @@ case class TsCardinalities(shardKeyPrefix: Seq[String],
                        .mkString(",") + "}"),
         "numGroupByFields" -> numGroupByFields.toString,
         "verbose" -> "true", // Using this plan to determine if we need to pass additional values in groupKey or not
-        "datasets" -> datasets.mkString(TsCardExec.PREFIX_DELIM)
+        "datasets" -> userDatasets
     )
   }
 }
diff --git a/query/src/test/scala/filodb/query/LogicalPlanSpec.scala b/query/src/test/scala/filodb/query/LogicalPlanSpec.scala
index e44fd6fa9..67decf515 100644
--- a/query/src/test/scala/filodb/query/LogicalPlanSpec.scala
+++ b/query/src/test/scala/filodb/query/LogicalPlanSpec.scala
@@ -327,11 +327,12 @@ class LogicalPlanSpec extends AnyFunSpec with Matchers {
   it ("TsCardinalities queryParams should have expected values") {
     val datasets = Seq("longtime-prometheus",
       "recordingrules-prometheus_rules_longterm")
-    val plan = TsCardinalities(Seq("a","b","c"), 3, 2, datasets)
+    val userDatasets = "\"raw\",\"recordingrules\""
+    val plan = TsCardinalities(Seq("a","b","c"), 3, 2, datasets, userDatasets)
     val queryParamsMap = plan.queryParams()
 
     queryParamsMap.get("numGroupByFields").get shouldEqual "3"
-    queryParamsMap.get("datasets").get shouldEqual datasets.mkString(",")
+    queryParamsMap.get("datasets").get shouldEqual userDatasets
     queryParamsMap.get("verbose").get shouldEqual "true"
     queryParamsMap.get("match[]").get shouldEqual "{_ws_=\"a\",_ns_=\"b\",__name__=\"c\"}"
   }