diff --git a/src/main/java/neatlogic/framework/sqlgenerator/$sql.java b/src/main/java/neatlogic/framework/sqlgenerator/$sql.java
index 5c003c15052d39cf78d4ffa996751ea0414f6007..e96aecf7a2df8b85ff195aaafea8a84f7ca77917 100644
--- a/src/main/java/neatlogic/framework/sqlgenerator/$sql.java
+++ b/src/main/java/neatlogic/framework/sqlgenerator/$sql.java
@@ -79,6 +79,10 @@ public class $sql {
         return exp(null, leftExpressionVo, operationType, rightExpressionVo, null);
     }
 
+    public static ExpressionVo exp(String leftParenthesis, ExpressionVo leftExpressionVo, String rightParenthesis) {
+        return exp(leftParenthesis, leftExpressionVo, "and", null, rightParenthesis);
+    }
+
     public static ExpressionVo exp(String leftColumn, String operationSymbol, String rightColumn) {
         return new ExpressionVo(leftColumn, operationSymbol, rightColumn);
     }
@@ -331,6 +335,17 @@ public class $sql {
         return plainSelect;
     }
 
+    public static void setDistinct(PlainSelect plainSelect, boolean distinct) {
+        if (plainSelect == null) {
+            return;
+        }
+        if (distinct) {
+            plainSelect.setDistinct(new Distinct());
+        } else {
+            plainSelect.setDistinct(null);
+        }
+    }
+
     public static void addSelectColumn(PlainSelect plainSelect, String columnName) {
         addSelectColumn(plainSelect, columnName, null);
     }
diff --git a/src/main/java/neatlogic/framework/sqlgenerator/$sqlTest.java b/src/main/java/neatlogic/framework/sqlgenerator/$sqlTest.java
index 678083a439e74a190ca1754e49bc7d65ad12bb40..f2abd2fa4d0aa7aba9051f27ece469120315b338 100644
--- a/src/main/java/neatlogic/framework/sqlgenerator/$sqlTest.java
+++ b/src/main/java/neatlogic/framework/sqlgenerator/$sqlTest.java
@@ -32,6 +32,7 @@ public class $sqlTest {
         List<String> methodNameList = getMethodNameList($sql.class);
         testSql(methodNameList);
         testForm(methodNameList);
+        testSetDistinct(methodNameList);
         testSetSelectColumn(methodNameList);
         testAddSelectColumn(methodNameList);
         testAddJoin(methodNameList);
@@ -168,6 +169,19 @@ public class $sqlTest {
         methodNameList.remove("public static void from(PlainSelect, String, String, String)");
     }
 
+    private static void testSetDistinct(List<String> methodNameList) {
+//        public static void setDistinct(PlainSelect, boolean)
+        PlainSelect plainSelect = $sql.from("tenant");
+        $sql.setDistinct(plainSelect, true);
+        $sql.setSelectColumn(plainSelect, "name");
+        System.out.println("plainSelect = " + plainSelect);
+        Assert.isTrue(Objects.equals(plainSelect.toString(), "SELECT DISTINCT name FROM tenant"), "测试失败");
+
+        $sql.setDistinct(plainSelect, false);
+        $sql.setSelectColumn(plainSelect, "uuid");
+        Assert.isTrue(Objects.equals(plainSelect.toString(), "SELECT uuid FROM tenant"), "测试失败");
+        methodNameList.remove("public static void setDistinct(PlainSelect, boolean)");
+    }
     private static void testSetSelectColumn(List<String> methodNameList) {
         PlainSelect plainSelect = $sql.from("tenant");
 //        public static void setSelectColumn(PlainSelect, String)
@@ -617,7 +631,12 @@ public class $sqlTest {
         $sql.addWhereExpression(plainSelect, $sql.exp("(", $sql.exp("uuid", "=", "name"), "and", $sql.exp("name", "=", "uuid"), ")"));
         Assert.isTrue(Objects.equals(plainSelect.toString(), "SELECT  FROM tenant WHERE (uuid = name AND name = uuid)"), "测试失败");
         methodNameList.remove("public static ExpressionVo exp(String, ExpressionVo, String, ExpressionVo, String)");
-
+//        public static ExpressionVo exp(String, ExpressionVo, String)
+        plainSelect = $sql.from("tenant");
+        ExpressionVo orExp = $sql.exp($sql.exp("uuid", "=", "name"), "or", $sql.exp("name", "=", "uuid"));
+        $sql.addWhereExpression(plainSelect, $sql.exp("(", orExp, ")"));
+        Assert.isTrue(Objects.equals(plainSelect.toString(), "SELECT  FROM tenant WHERE (uuid = name OR name = uuid)"), "测试失败");
+        methodNameList.remove("public static ExpressionVo exp(String, ExpressionVo, String)");
     }
 
     private static void testFun(List<String> methodNameList) {
diff --git a/src/main/java/neatlogic/framework/sqlgenerator/ExpressionVo.java b/src/main/java/neatlogic/framework/sqlgenerator/ExpressionVo.java
index d7edfa2d26a8e71d7b0209831ec48f7c5b2e7b9a..65b0631314d3e8bb0dce52bdb617677729beb586 100644
--- a/src/main/java/neatlogic/framework/sqlgenerator/ExpressionVo.java
+++ b/src/main/java/neatlogic/framework/sqlgenerator/ExpressionVo.java
@@ -34,6 +34,10 @@ public class ExpressionVo {
     private final String operationSymbol;
     private final String type;
 
+    ExpressionVo(String leftParenthesis, ExpressionVo leftExpressionVo, String rightParenthesis) {
+        this(leftParenthesis, leftExpressionVo, "and", null, rightParenthesis);
+    }
+
     ExpressionVo(ExpressionVo leftExpressionVo, String operationType, ExpressionVo rightExpressionVo) {
         this(null, leftExpressionVo, operationType, rightExpressionVo, null);
     }