diff --git a/src/main/java/com/jd/jdbc/engine/ConcatenateEngine.java b/src/main/java/com/jd/jdbc/engine/ConcatenateEngine.java
index 46c5cd5..12732db 100644
--- a/src/main/java/com/jd/jdbc/engine/ConcatenateEngine.java
+++ b/src/main/java/com/jd/jdbc/engine/ConcatenateEngine.java
@@ -32,7 +32,6 @@
 import io.vitess.proto.Query;
 import java.sql.SQLException;
 import java.util.ArrayList;
-import java.util.Arrays;
 import java.util.Collections;
 import java.util.LinkedHashSet;
 import java.util.List;
@@ -177,7 +176,7 @@ public VtRowList fetch(boolean wantFields) throws SQLException {
                     return vtResultSet;
                 }
                 if (this.sourceStreamResultList == null) {
-                    initSouceStreamResultList();
+                    initSourceStreamResultList();
                 }
                 for (VtStreamResultSet sourceStream : sourceStreamResultList) {
                     if (sourceStream.hasNext()) {
@@ -192,7 +191,7 @@ public VtRowList fetch(boolean wantFields) throws SQLException {
                 return vtResultSet;
             }
 
-            private void initSouceStreamResultList() throws SQLException {
+            private void initSourceStreamResultList() throws SQLException {
                 if (sources == null) {
                     return;
                 }
diff --git a/src/main/java/com/jd/jdbc/sqlparser/parser/SQLExprParser.java b/src/main/java/com/jd/jdbc/sqlparser/parser/SQLExprParser.java
index 25ab283..904000f 100644
--- a/src/main/java/com/jd/jdbc/sqlparser/parser/SQLExprParser.java
+++ b/src/main/java/com/jd/jdbc/sqlparser/parser/SQLExprParser.java
@@ -1222,7 +1222,7 @@ private SQLExpr methodRest(SQLExpr expr, String name, boolean aggregate) {
         return expr;
     }
 
-    public final SQLExpr groupComparisionRest(SQLExpr expr) {
+    public final SQLExpr groupComparisonRest(SQLExpr expr) {
         return expr;
     }