Refactor arithmetic operation tests to use integer types instead of doubles

Author: Cool6689

integration-test/src/test/java/org/apache/iotdb/db/it/aggregation/maxby/IoTDBMaxByIT.java

@@ -301,7 +301,7 @@ public void testMaxByWithExpression() {
             "max_by(root.db.d1.x5, -cos(sin(root.db.d1.y2 / 10)))",
             "max_by(REPLACE(root.db.d1.x6, '3', '4'), -cos(sin(root.db.d1.y2 / 10)))",
           };
-      String[] retArray = new String[] {"0,1.3333333333333333,2.0,2.0,false,2,"};
+      String[] retArray = new String[] {"0,1,2.0,2.0,false,2,"};
       String y = "-cos(sin(y2 / 10))";
       resultSetEqualTest(
           String.format(
@@ -330,10 +330,7 @@ public void testMaxByWithAlignByDevice() {
             "max_by(REPLACE(x6, '3', '4'), -cos(sin(y2 / 10)))",
           };
       String[] retArray =
-          new String[] {
-            "root.db.d1,0,1.3333333333333333,2.0,2.0,false,2,",
-            "root.db.d2,0,1.3333333333333333,2.0,2.0,false,2,"
-          };
+          new String[] {"root.db.d1,0,1,2.0,2.0,false,2,", "root.db.d2,0,1,2.0,2.0,false,2,"};
       String y = "-cos(sin(y2 / 10))";
       resultSetEqualTest(
           String.format(

integration-test/src/test/java/org/apache/iotdb/db/it/aggregation/minby/IoTDBMinByIT.java

@@ -300,7 +300,7 @@ public void testMaxByWithExpression() {
             "min_by(root.db.d1.x5, -cos(sin(root.db.d1.y2 / 10)))",
             "min_by(REPLACE(root.db.d1.x6, '3', '4'), -cos(sin(root.db.d1.y2 / 10)))",
           };
-      String[] retArray = new String[] {"0,1.3333333333333333,2.0,2.0,false,2,"};
+      String[] retArray = new String[] {"0,1,2.0,2.0,false,2,"};
       String y = "-cos(sin(y2 / 10))";
       resultSetEqualTest(
           String.format(
@@ -329,10 +329,7 @@ public void testMaxByWithAlignByDevice() {
             "min_by(REPLACE(x6, '3', '4'), -cos(sin(y2 / 10)))",
           };
       String[] retArray =
-          new String[] {
-            "root.db.d1,0,1.3333333333333333,2.0,2.0,false,2,",
-            "root.db.d2,0,1.3333333333333333,2.0,2.0,false,2,"
-          };
+          new String[] {"root.db.d1,0,1,2.0,2.0,false,2,", "root.db.d2,0,1,2.0,2.0,false,2,"};
       String y = "-cos(sin(y2 / 10))";
       resultSetEqualTest(
           String.format(

integration-test/src/test/java/org/apache/iotdb/db/it/udf/IoTDBUDTFHybridQueryIT.java

@@ -19,30 +19,28 @@
 
 package org.apache.iotdb.db.it.udf;
 
+import static org.apache.iotdb.itbase.constant.TestConstant.TIMESTAMP_STR;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+
+import java.sql.Connection;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.sql.Statement;
 import org.apache.iotdb.commons.schema.column.ColumnHeaderConstant;
 import org.apache.iotdb.it.env.EnvFactory;
 import org.apache.iotdb.it.framework.IoTDBTestRunner;
 import org.apache.iotdb.itbase.category.ClusterIT;
 import org.apache.iotdb.itbase.category.LocalStandaloneIT;
 import org.apache.iotdb.itbase.constant.UDFTestConstant;
-
 import org.junit.AfterClass;
 import org.junit.BeforeClass;
 import org.junit.Ignore;
 import org.junit.Test;
 import org.junit.experimental.categories.Category;
 import org.junit.runner.RunWith;
 
-import java.sql.Connection;
-import java.sql.ResultSet;
-import java.sql.SQLException;
-import java.sql.Statement;
-
-import static org.apache.iotdb.itbase.constant.TestConstant.TIMESTAMP_STR;
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
-import static org.junit.Assert.fail;
-
 @RunWith(IoTDBTestRunner.class)
 @Category({LocalStandaloneIT.class, ClusterIT.class})
 public class IoTDBUDTFHybridQueryIT {
@@ -164,9 +162,9 @@ public void testUserDefinedFunctionFillFunctionHybridQuery() {
           "2,0.9092974268256817,3,2.0",
           "3,0.1411200080598672,4,3.0",
           "4,-0.7568024953079282,5,3.14",
-          "7,3.14,3.14,7.0",
-          "8,3.14,3.14,8.0",
-          "9,3.14,3.14,9.0"
+          "7,3.14,null,7.0",
+          "8,3.14,null,8.0",
+          "9,3.14,null,9.0"
         };
 
     try (Connection connection = EnvFactory.getEnv().getConnection();