[SPARK-32564][SQL][TEST][FOLLOWUP] Re-enable TPCDSQuerySuite with empty tables

### What changes were proposed in this pull request?

This is the follow-up PR of #29384 to address the cloud-fan comment: #29384 (comment)
This PR re-enables `TPCDSQuerySuite` with empty tables for better test coverages.

### Why are the changes needed?

For better test coverage.

### Does this PR introduce _any_ user-facing change?

No.

### How was this patch tested?

Existing tests.

Closes #29391 from maropu/SPARK-32564-FOLLOWUP.

Authored-by: Takeshi Yamamuro <[email protected]>
Signed-off-by: Dongjoon Hyun <[email protected]>

Author: maropu

sql/core/src/test/scala/org/apache/spark/sql/TPCDSQuerySuite.scala

@@ -17,6 +17,7 @@
 
 package org.apache.spark.sql
 
+import org.apache.spark.sql.catalyst.TableIdentifier
 import org.apache.spark.sql.catalyst.util.resourceToString
 import org.apache.spark.sql.internal.SQLConf
 
@@ -46,11 +47,7 @@ class TPCDSQuerySuite extends BenchmarkQueryTest with TPCDSSchema {
     "q81", "q82", "q83", "q84", "q85", "q86", "q87", "q88", "q89", "q90",
     "q91", "q92", "q93", "q94", "q95", "q96", "q97", "q98", "q99")
 
-  val sqlConfgs = Seq(
-    SQLConf.CBO_ENABLED.key -> "true",
-    SQLConf.PLAN_STATS_ENABLED.key -> "true",
-    SQLConf.JOIN_REORDER_ENABLED.key -> "true"
-  )
+  val sqlConfgs: Seq[(String, String)] = Nil
 
   tpcdsQueries.foreach { name =>
     val queryString = resourceToString(s"tpcds/$name.sql",
@@ -104,3 +101,23 @@ class TPCDSQuerySuite extends BenchmarkQueryTest with TPCDSSchema {
     }
   }
 }
+
+class TPCDSQueryWithStatsSuite extends TPCDSQuerySuite {
+
+  override def beforeAll(): Unit = {
+    super.beforeAll()
+    for (tableName <- tableNames) {
+      // To simulate plan generation on actual TPCDS data, injects data stats here
+      spark.sessionState.catalog.alterTableStats(
+        TableIdentifier(tableName), Some(TPCDSTableStats.sf100TableStats(tableName)))
+    }
+  }
+
+  // Sets configurations for enabling the optimization rules that
+  // exploit data statistics.
+  override val sqlConfgs = Seq(
+    SQLConf.CBO_ENABLED.key -> "true",
+    SQLConf.PLAN_STATS_ENABLED.key -> "true",
+    SQLConf.JOIN_REORDER_ENABLED.key -> "true"
+  )
+}

sql/core/src/test/scala/org/apache/spark/sql/TPCDSSchema.scala

@@ -17,8 +17,6 @@
 
 package org.apache.spark.sql
 
-import org.apache.spark.sql.catalyst.TableIdentifier
-
 trait TPCDSSchema {
 
   private val tableColumns = Map(
@@ -257,9 +255,5 @@ trait TPCDSSchema {
          |USING $format
          |${options.mkString("\n")}
        """.stripMargin)
-
-    // To simulate plan generation on actual TPCDS data, injects data stats here
-    spark.sessionState.catalog.alterTableStats(
-      TableIdentifier(tableName), Some(TPCDSTableStats.sf100TableStats(tableName)))
   }
 }