abhishekagarwal87 commented on code in PR #15096:
URL: https://github.com/apache/druid/pull/15096#discussion_r1351532323


##########
sql/src/test/java/org/apache/druid/sql/calcite/DrillWindowQueryTest.java:
##########
@@ -142,65 +264,231 @@ public SpecificSegmentsQuerySegmentWalker 
createQuerySegmentWalker(
         new LongDimensionSchema("col6"),
         new StringDimensionSchema("col7"),
         new StringDimensionSchema("col8"),
-        new StringDimensionSchema("col9")
-    );
+        new StringDimensionSchema("col9"));
+    attachIndex(
+        retVal,
+        "smlTbl.parquet",
+        // "col_int": 8122,
+        new LongDimensionSchema("col_int"),
+        // "col_bgint": 817200,
+        new LongDimensionSchema("col_bgint"),
+        // "col_char_2": "IN",
+        new StringDimensionSchema("col_char_2"),
+        // "col_vchar_52":
+        // "AXXXXXXXXXXXXXXXXXXXXXXXXXCXXXXXXXXXXXXXXXXXXXXXXXXB",
+        new StringDimensionSchema("col_vchar_52"),
+        // "col_tmstmp": 1409617682418,
+        new LongDimensionSchema("col_tmstmp"),
+        // "col_dt": 422717616000000,
+        new LongDimensionSchema("col_dt"),
+        // "col_booln": false,
+        new StringDimensionSchema("col_booln"),
+        // "col_dbl": 12900.48,
+        new DoubleDimensionSchema("col_dbl"),
+        // "col_tm": 33109170
+        new LongDimensionSchema("col_tm"));
+    attachIndex(
+        retVal,
+        "fewRowsAllData.parquet",
+        // "col0":12024,
+        new LongDimensionSchema("col0"),
+        // "col1":307168,
+        new LongDimensionSchema("col1"),
+        // "col2":"VT",
+        new StringDimensionSchema("col2"),
+        // "col3":"DXXXXXXXXXXXXXXXXXXXXXXXXXEXXXXXXXXXXXXXXXXXXXXXXXXF",
+        new StringDimensionSchema("col3"),
+        // "col4":1338596882419,
+        new LongDimensionSchema("col4"),
+        // "col5":422705433600000,
+        new LongDimensionSchema("col5"),
+        // "col6":true,
+        new StringDimensionSchema("col6"),
+        // "col7":3.95110006277E8,
+        new DoubleDimensionSchema("col7"),
+        // "col8":67465430
+        new LongDimensionSchema("col8"));
+    attachIndex(
+        retVal,
+        "t_alltype.parquet",
+        // "c1":1,
+        new LongDimensionSchema("c1"),
+        // "c2":592475043,
+        new LongDimensionSchema("c2"),
+        // "c3":616080519999272,
+        new LongDimensionSchema("c3"),
+        // "c4":"ObHeWTDEcbGzssDwPwurfs",
+        new StringDimensionSchema("c4"),
+        // "c5":"0sZxIfZ CGwTOaLWZ6nWkUNx",
+        new StringDimensionSchema("c5"),
+        // "c6":1456290852307,
+        new LongDimensionSchema("c6"),
+        // "c7":421426627200000,
+        new LongDimensionSchema("c7"),
+        // "c8":true,
+        new StringDimensionSchema("c8"),
+        // "c9":0.626179100469
+        new DoubleDimensionSchema("c9"));
 
     return retVal;
   }
 
-  @Test
+  public class TextualResultsVerifier implements ResultsVerifier
+  {
+    protected final List<String[]> expectedResultsText;
+    @Nullable
+    protected final RowSignature expectedResultRowSignature;
+    private RowSignature currentRowSignature;
+
+    public TextualResultsVerifier(List<String[]> expectedResultsString, 
RowSignature expectedSignature)
+    {
+      this.expectedResultsText = expectedResultsString;
+      this.expectedResultRowSignature = expectedSignature;
+    }
+
+    @Override
+    public void verifyRowSignature(RowSignature rowSignature)
+    {
+      if (expectedResultRowSignature != null) {
+        Assert.assertEquals(expectedResultRowSignature, rowSignature);
+      }
+      currentRowSignature = rowSignature;
+    }
+
+    @Override
+    public void verify(String sql, List<Object[]> results)
+    {
+      List<Object[]> expectedResults = parseResults(currentRowSignature, 
expectedResultsText);
+      try {
+        Assert.assertEquals(StringUtils.format("result count: %s", sql), 
expectedResultsText.size(), results.size());
+        if (!isOrdered(sql)) {

Review Comment:
   shouldn't this be flipped? 



##########
sql/src/test/java/org/apache/druid/sql/calcite/DrillWindowQueryTest.java:
##########
@@ -142,65 +264,231 @@ public SpecificSegmentsQuerySegmentWalker 
createQuerySegmentWalker(
         new LongDimensionSchema("col6"),
         new StringDimensionSchema("col7"),
         new StringDimensionSchema("col8"),
-        new StringDimensionSchema("col9")
-    );
+        new StringDimensionSchema("col9"));
+    attachIndex(
+        retVal,
+        "smlTbl.parquet",
+        // "col_int": 8122,
+        new LongDimensionSchema("col_int"),
+        // "col_bgint": 817200,
+        new LongDimensionSchema("col_bgint"),
+        // "col_char_2": "IN",
+        new StringDimensionSchema("col_char_2"),
+        // "col_vchar_52":
+        // "AXXXXXXXXXXXXXXXXXXXXXXXXXCXXXXXXXXXXXXXXXXXXXXXXXXB",
+        new StringDimensionSchema("col_vchar_52"),
+        // "col_tmstmp": 1409617682418,
+        new LongDimensionSchema("col_tmstmp"),
+        // "col_dt": 422717616000000,
+        new LongDimensionSchema("col_dt"),
+        // "col_booln": false,
+        new StringDimensionSchema("col_booln"),
+        // "col_dbl": 12900.48,
+        new DoubleDimensionSchema("col_dbl"),
+        // "col_tm": 33109170
+        new LongDimensionSchema("col_tm"));
+    attachIndex(
+        retVal,
+        "fewRowsAllData.parquet",
+        // "col0":12024,
+        new LongDimensionSchema("col0"),
+        // "col1":307168,
+        new LongDimensionSchema("col1"),
+        // "col2":"VT",
+        new StringDimensionSchema("col2"),
+        // "col3":"DXXXXXXXXXXXXXXXXXXXXXXXXXEXXXXXXXXXXXXXXXXXXXXXXXXF",
+        new StringDimensionSchema("col3"),
+        // "col4":1338596882419,
+        new LongDimensionSchema("col4"),
+        // "col5":422705433600000,
+        new LongDimensionSchema("col5"),
+        // "col6":true,
+        new StringDimensionSchema("col6"),
+        // "col7":3.95110006277E8,
+        new DoubleDimensionSchema("col7"),
+        // "col8":67465430
+        new LongDimensionSchema("col8"));
+    attachIndex(
+        retVal,
+        "t_alltype.parquet",
+        // "c1":1,
+        new LongDimensionSchema("c1"),
+        // "c2":592475043,
+        new LongDimensionSchema("c2"),
+        // "c3":616080519999272,
+        new LongDimensionSchema("c3"),
+        // "c4":"ObHeWTDEcbGzssDwPwurfs",
+        new StringDimensionSchema("c4"),
+        // "c5":"0sZxIfZ CGwTOaLWZ6nWkUNx",
+        new StringDimensionSchema("c5"),
+        // "c6":1456290852307,
+        new LongDimensionSchema("c6"),
+        // "c7":421426627200000,
+        new LongDimensionSchema("c7"),
+        // "c8":true,
+        new StringDimensionSchema("c8"),
+        // "c9":0.626179100469
+        new DoubleDimensionSchema("c9"));
 
     return retVal;
   }
 
-  @Test
+  public class TextualResultsVerifier implements ResultsVerifier
+  {
+    protected final List<String[]> expectedResultsText;
+    @Nullable
+    protected final RowSignature expectedResultRowSignature;
+    private RowSignature currentRowSignature;
+
+    public TextualResultsVerifier(List<String[]> expectedResultsString, 
RowSignature expectedSignature)
+    {
+      this.expectedResultsText = expectedResultsString;
+      this.expectedResultRowSignature = expectedSignature;
+    }
+
+    @Override
+    public void verifyRowSignature(RowSignature rowSignature)
+    {
+      if (expectedResultRowSignature != null) {
+        Assert.assertEquals(expectedResultRowSignature, rowSignature);
+      }
+      currentRowSignature = rowSignature;
+    }
+
+    @Override
+    public void verify(String sql, List<Object[]> results)
+    {
+      List<Object[]> expectedResults = parseResults(currentRowSignature, 
expectedResultsText);
+      try {
+        Assert.assertEquals(StringUtils.format("result count: %s", sql), 
expectedResultsText.size(), results.size());
+        if (!isOrdered(sql)) {
+          results.sort(new ArrayRowCmp());
+          expectedResults.sort(new ArrayRowCmp());
+        }
+        assertResultsEquals(sql, expectedResults, results);
+      }
+      catch (AssertionError e) {
+        System.out.println("query: " + sql);
+        displayResults("Expected", expectedResults);
+        displayResults("Actual", results);
+        throw e;
+      }
+    }
+
+    private boolean isOrdered(String sql)
+    {
+      // FIXME: SqlToRelConverter.isOrdered(null) would be better
+      sql = sql.toLowerCase(Locale.ENGLISH).replace('\n', ' ');
+      sql = sql.substring(sql.lastIndexOf(')'));
+      return sql.contains("order");

Review Comment:
   can you explain the logic here a bit? 



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