diff --git a/src/main/java/com/alibaba/druid/sql/ast/expr/SQLVariantRefExpr.java b/src/main/java/com/alibaba/druid/sql/ast/expr/SQLVariantRefExpr.java
index 1e6928b022..8f4e67161a 100644
--- a/src/main/java/com/alibaba/druid/sql/ast/expr/SQLVariantRefExpr.java
+++ b/src/main/java/com/alibaba/druid/sql/ast/expr/SQLVariantRefExpr.java
@@ -30,7 +30,7 @@ public class SQLVariantRefExpr extends SQLExprImpl {
 
     private boolean global = false;
 
-    private boolean hasSessionBefore = false;
+    private boolean session = false;
 
     private int     index  = -1;
 
@@ -43,10 +43,10 @@ public class SQLVariantRefExpr extends SQLExprImpl {
         this.global = global;
     }
 
-    public SQLVariantRefExpr(String name, boolean global,boolean hasSessionBefore){
+    public SQLVariantRefExpr(String name, boolean global,boolean session){
         this.name = name;
         this.global = global;
-        this.hasSessionBefore = hasSessionBefore;
+        this.session = session;
     }
 
     public SQLVariantRefExpr(){
@@ -74,12 +74,12 @@ public class SQLVariantRefExpr extends SQLExprImpl {
     }
 
 
-    public boolean isHasSessionBefore() {
-        return hasSessionBefore;
+    public boolean isSession() {
+        return session;
     }
 
-    public void setHasSessionBefore(boolean hasSessionBefore) {
-        this.hasSessionBefore = hasSessionBefore;
+    public void setSession(boolean session) {
+        this.session = session;
     }
 
     @Override
diff --git a/src/main/java/com/alibaba/druid/sql/dialect/mysql/ast/statement/MySqlSetTransactionStatement.java b/src/main/java/com/alibaba/druid/sql/dialect/mysql/ast/statement/MySqlSetTransactionStatement.java
index e731b84c73..5897d6a23f 100644
--- a/src/main/java/com/alibaba/druid/sql/dialect/mysql/ast/statement/MySqlSetTransactionStatement.java
+++ b/src/main/java/com/alibaba/druid/sql/dialect/mysql/ast/statement/MySqlSetTransactionStatement.java
@@ -29,15 +29,15 @@ public class MySqlSetTransactionStatement extends MySqlStatementImpl {
 
     private String  accessModel;
 
-    private Boolean hasSessionBefore;
+    private Boolean session;
 
 
-    public Boolean getHasSessionBefore() {
-        return hasSessionBefore;
+    public Boolean getSession() {
+        return session;
     }
 
-    public void setHasSessionBefore(Boolean hasSessionBefore) {
-        this.hasSessionBefore = hasSessionBefore;
+    public void setSession(Boolean session) {
+        this.session = session;
     }
 
     public void accept0(MySqlASTVisitor visitor) {
diff --git a/src/main/java/com/alibaba/druid/sql/dialect/mysql/parser/MySqlStatementParser.java b/src/main/java/com/alibaba/druid/sql/dialect/mysql/parser/MySqlStatementParser.java
index 024c4e2949..95597a546e 100644
--- a/src/main/java/com/alibaba/druid/sql/dialect/mysql/parser/MySqlStatementParser.java
+++ b/src/main/java/com/alibaba/druid/sql/dialect/mysql/parser/MySqlStatementParser.java
@@ -2609,20 +2609,20 @@ public class MySqlStatementParser extends SQLStatementParser {
         }
 
         Boolean global = null;
-        Boolean sessionBefore = null;
+        Boolean session = null;
         if (lexer.identifierEquals(GLOBAL)) {
             global = Boolean.TRUE;
             lexer.nextToken();
         } else if (lexer.identifierEquals(SESSION)) {
             global = Boolean.FALSE;
-            sessionBefore = Boolean.TRUE;
+            session = Boolean.TRUE;
             lexer.nextToken();
         }
 
         if (lexer.identifierEquals("TRANSACTION")) {
             MySqlSetTransactionStatement stmt = new MySqlSetTransactionStatement();
             stmt.setGlobal(global);
-            stmt.setHasSessionBefore(sessionBefore);
+            stmt.setSession(session);
 
             lexer.nextToken();
             if (lexer.identifierEquals("ISOLATION")) {
@@ -2722,14 +2722,14 @@ public class MySqlStatementParser extends SQLStatementParser {
 
             parseAssignItems(stmt.getItems(), stmt);
 
-            if (global != null && global.booleanValue()) {
+            if (global != null && global) {
                 SQLVariantRefExpr varRef = (SQLVariantRefExpr) stmt.getItems().get(0).getTarget();
                 varRef.setGlobal(true);
             }
 
-            if(sessionBefore != null && sessionBefore.booleanValue()){
+            if(session != null && session){
                 SQLVariantRefExpr varRef = (SQLVariantRefExpr) stmt.getItems().get(0).getTarget();
-                varRef.setHasSessionBefore(true);
+                varRef.setSession(true);
             }
 
             if (lexer.token() == Token.HINT) {
diff --git a/src/main/java/com/alibaba/druid/sql/dialect/mysql/visitor/MySqlOutputVisitor.java b/src/main/java/com/alibaba/druid/sql/dialect/mysql/visitor/MySqlOutputVisitor.java
index cfc156045f..ce85349fe7 100644
--- a/src/main/java/com/alibaba/druid/sql/dialect/mysql/visitor/MySqlOutputVisitor.java
+++ b/src/main/java/com/alibaba/druid/sql/dialect/mysql/visitor/MySqlOutputVisitor.java
@@ -655,7 +655,7 @@ public class MySqlOutputVisitor extends SQLASTOutputVisitor implements MySqlASTV
 
         if (x.isGlobal()) {
             print0("@@global.");
-        }else if(x.isHasSessionBefore()){
+        }else if(x.isSession()){
             print0("@@session.");
         }
 
diff --git a/src/test/java/com/alibaba/druid/mysql/MysqlCreateTableTest.java b/src/test/java/com/alibaba/druid/mysql/MysqlVarantRefTest.java
similarity index 82%
rename from src/test/java/com/alibaba/druid/mysql/MysqlCreateTableTest.java
rename to src/test/java/com/alibaba/druid/mysql/MysqlVarantRefTest.java
index 452d3f8fe0..c4afc0401c 100644
--- a/src/test/java/com/alibaba/druid/mysql/MysqlCreateTableTest.java
+++ b/src/test/java/com/alibaba/druid/mysql/MysqlVarantRefTest.java
@@ -16,7 +16,7 @@ import java.util.List;
 /**
  * Created by szf on 2017/11/16.
  */
-public class MysqlCreateTableTest {
+public class MysqlVarantRefTest {
 
     @Test
     public void test(){
@@ -28,8 +28,8 @@ public class MysqlCreateTableTest {
 
         SQLVariantRefExpr resultExpr = (SQLVariantRefExpr)result.getItems().get(0).getTarget();
         SQLVariantRefExpr resultExpr2 = (SQLVariantRefExpr)result.getItems().get(1).getTarget();
-        Assert.assertTrue(resultExpr.isHasSessionBefore());
-        Assert.assertTrue(resultExpr2.isHasSessionBefore());
+        Assert.assertTrue(resultExpr.isSession());
+        Assert.assertTrue(resultExpr2.isSession());
     }
 
     @Test
@@ -54,7 +54,7 @@ public class MysqlCreateTableTest {
 
         MySqlSetTransactionStatement x = (MySqlSetTransactionStatement)stmtList.get(0);
 
-        Assert.assertTrue(x.getHasSessionBefore());
+        Assert.assertTrue(x.getSession());
     }
 
     @Test
@@ -65,7 +65,7 @@ public class MysqlCreateTableTest {
 
         MySqlSetTransactionStatement x = (MySqlSetTransactionStatement)stmtList.get(0);
 
-        Assert.assertTrue(x.getHasSessionBefore()==null);
+        Assert.assertTrue(x.getSession() == null);
     }
 
     @Test
@@ -78,8 +78,8 @@ public class MysqlCreateTableTest {
 
         SQLVariantRefExpr resultExpr = (SQLVariantRefExpr)result.getItems().get(0).getTarget();
         SQLVariantRefExpr resultExpr2 = (SQLVariantRefExpr)result.getItems().get(1).getTarget();
-        Assert.assertTrue(resultExpr.isHasSessionBefore());
-        Assert.assertTrue(!resultExpr2.isHasSessionBefore());
+        Assert.assertTrue(resultExpr.isSession());
+        Assert.assertTrue(!resultExpr2.isSession());
     }
 
 
@@ -93,8 +93,8 @@ public class MysqlCreateTableTest {
 
         SQLVariantRefExpr resultExpr = (SQLVariantRefExpr)result.getItems().get(0).getTarget();
         SQLVariantRefExpr resultExpr2 = (SQLVariantRefExpr)result.getItems().get(1).getTarget();
-        Assert.assertTrue(!resultExpr.isHasSessionBefore());
-        Assert.assertTrue(!resultExpr2.isHasSessionBefore());
+        Assert.assertTrue(!resultExpr.isSession());
+        Assert.assertTrue(!resultExpr2.isSession());
     }
 
 
@@ -108,8 +108,8 @@ public class MysqlCreateTableTest {
 
         SQLVariantRefExpr resultExpr = (SQLVariantRefExpr)result.getItems().get(0).getTarget();
         SQLVariantRefExpr resultExpr2 = (SQLVariantRefExpr)result.getItems().get(1).getTarget();
-        Assert.assertTrue(!resultExpr.isHasSessionBefore());
-        Assert.assertTrue(resultExpr2.isHasSessionBefore());
+        Assert.assertTrue(!resultExpr.isSession());
+        Assert.assertTrue(resultExpr2.isSession());
     }
 
 
@@ -124,9 +124,9 @@ public class MysqlCreateTableTest {
         SQLVariantRefExpr resultExpr = (SQLVariantRefExpr)result.getItems().get(0).getTarget();
         SQLVariantRefExpr resultExpr2 = (SQLVariantRefExpr)result.getItems().get(1).getTarget();
         SQLVariantRefExpr resultExpr3 = (SQLVariantRefExpr)result.getItems().get(2).getTarget();
-        Assert.assertTrue(!resultExpr.isHasSessionBefore());
-        Assert.assertTrue(resultExpr2.isHasSessionBefore());
-        Assert.assertTrue(resultExpr3.isHasSessionBefore());
+        Assert.assertTrue(!resultExpr.isSession());
+        Assert.assertTrue(resultExpr2.isSession());
+        Assert.assertTrue(resultExpr3.isSession());
     }
 
 
@@ -143,11 +143,11 @@ public class MysqlCreateTableTest {
         SQLVariantRefExpr resultExpr3 = (SQLVariantRefExpr)result.getItems().get(2).getTarget();
         SQLVariantRefExpr resultExpr4 = (SQLVariantRefExpr)result.getItems().get(3).getTarget();
         SQLVariantRefExpr resultExpr5 = (SQLVariantRefExpr)result.getItems().get(4).getTarget();
-        Assert.assertTrue(!resultExpr.isHasSessionBefore());
-        Assert.assertTrue(resultExpr2.isHasSessionBefore());
-        Assert.assertTrue(resultExpr3.isHasSessionBefore());
-        Assert.assertTrue(!resultExpr4.isHasSessionBefore());
-        Assert.assertTrue(resultExpr5.isHasSessionBefore());
+        Assert.assertTrue(!resultExpr.isSession());
+        Assert.assertTrue(resultExpr2.isSession());
+        Assert.assertTrue(resultExpr3.isSession());
+        Assert.assertTrue(!resultExpr4.isSession());
+        Assert.assertTrue(resultExpr5.isSession());
     }
 
 }