diff --git a/src/main/java/neatlogic/framework/sqlgenerator/$sql.java b/src/main/java/neatlogic/framework/sqlgenerator/$sql.java
index e96aecf7a2df8b85ff195aaafea8a84f7ca77917..af25ce7cd2fb840538ed51d1aedc9b3a369d0fd0 100644
--- a/src/main/java/neatlogic/framework/sqlgenerator/$sql.java
+++ b/src/main/java/neatlogic/framework/sqlgenerator/$sql.java
@@ -111,6 +111,10 @@ public class $sql {
         return new ExpressionVo(leftColumn, operationSymbol, rightValueExpression);
     }
 
+    public static ExpressionVo exp(String leftColumn, String operationSymbol, FunctionVo rightFunction) {
+        return new ExpressionVo(leftColumn, operationSymbol, rightFunction);
+    }
+
     public static ExpressionVo exp(String leftColumn, String operationSymbol) {
         return new ExpressionVo(leftColumn, operationSymbol, new ValueVo(""));
     }
@@ -221,6 +225,7 @@ public class $sql {
         if (CollectionUtils.isNotEmpty(sqlVo.getWhereExpressionList())) {
             whereExpressionList.addAll(sqlVo.getWhereExpressionList());
         }
+        List<String> joinAliasList = new ArrayList<>();
         List<JoinVo> joinList = sqlVo.getJoinList();
         for (JoinVo joinVo : joinList) {
             if (CollectionUtils.isNotEmpty(joinVo.getGroupByList())) {
@@ -235,7 +240,10 @@ public class $sql {
             if (CollectionUtils.isNotEmpty(joinVo.getWhereExpressionList())) {
                 whereExpressionList.addAll(joinVo.getWhereExpressionList());
             }
-            addJoin(plainSelect, joinVo);
+            if (!joinAliasList.contains(joinVo.getAlias())) {
+                addJoin(plainSelect, joinVo);
+                joinAliasList.add(joinVo.getAlias());
+            }
         }
         if (CollectionUtils.isNotEmpty(selectColumnList)) {
             for (ColumnVo selectColumn : selectColumnList) {
@@ -662,6 +670,8 @@ public class $sql {
                 } else if (rightObj instanceof ExpressionList) {
                     rightExpressionList = (ExpressionList) rightObj;
                 }
+            } else if (expressionVo.getRightFunctionVo() != null) {
+                rightExpression = parseFunction(expressionVo.getRightFunctionVo());
             }
             if (Objects.equals(operationSymbol, "=")) {
                 resultExpression = new EqualsTo(leftExpression, rightExpression);
diff --git a/src/main/java/neatlogic/framework/sqlgenerator/$sqlTest.java b/src/main/java/neatlogic/framework/sqlgenerator/$sqlTest.java
index f2abd2fa4d0aa7aba9051f27ece469120315b338..3088073f2561b2eac82220d76fbb9d5ad4fccd86 100644
--- a/src/main/java/neatlogic/framework/sqlgenerator/$sqlTest.java
+++ b/src/main/java/neatlogic/framework/sqlgenerator/$sqlTest.java
@@ -526,6 +526,11 @@ public class $sqlTest {
         $sql.addWhereExpression(plainSelect, $sql.exp("is_active", "in", "(0, 1)"));
         Assert.isTrue(Objects.equals(plainSelect.toString(), "SELECT  FROM tenant WHERE is_active IN (0, 1)"), "测试失败");
         methodNameList.remove("public static ExpressionVo exp(String, String, String)");
+//        public static ExpressionVo exp(String, String, FunctionVo)
+        plainSelect = $sql.from("tenant");
+        $sql.addWhereExpression(plainSelect, $sql.exp("visit_time", ">=", $sql.fun("STR_TO_DATE", "'2023-11-08 09:57:01'", "'%Y-%m-%d %H:%i:%s'")));
+        Assert.isTrue(Objects.equals(plainSelect.toString(), "SELECT  FROM tenant WHERE visit_time >= STR_TO_DATE('2023-11-08 09:57:01', '%Y-%m-%d %H:%i:%s')"), "测试失败");
+        methodNameList.remove("public static ExpressionVo exp(String, String, FunctionVo)");
 //        public static ExpressionVo exp(String, String, Integer)
         plainSelect = $sql.from("tenant");
         $sql.addWhereExpression(plainSelect, $sql.exp("is_active", "=", 0));
diff --git a/src/main/java/neatlogic/framework/sqlgenerator/ExpressionVo.java b/src/main/java/neatlogic/framework/sqlgenerator/ExpressionVo.java
index 65b0631314d3e8bb0dce52bdb617677729beb586..efa99dbf92c8a56d56f62d30baa3de8fb2c9e53a 100644
--- a/src/main/java/neatlogic/framework/sqlgenerator/ExpressionVo.java
+++ b/src/main/java/neatlogic/framework/sqlgenerator/ExpressionVo.java
@@ -29,6 +29,7 @@ public class ExpressionVo {
     private String rightColumn;
     private ValueVo leftValueExpression;
     private ValueVo rightValueExpression;
+    private FunctionVo rightFunctionVo;
     private ExpressionVo leftExpressionVo;
     private ExpressionVo rightExpressionVo;
     private final String operationSymbol;
@@ -62,6 +63,13 @@ public class ExpressionVo {
         this(leftColumn, operationSymbol, new ValueVo(""));
     }
 
+    ExpressionVo(String leftColumn, String operationSymbol, FunctionVo rightFunctionVo) {
+        this.leftColumn = leftColumn;
+        this.operationSymbol = operationSymbol;
+        this.rightFunctionVo = rightFunctionVo;
+        this.type = $sql.COMPARATIVE_OPERATION;
+    }
+
     ExpressionVo(String leftColumn, String operationSymbol, ValueVo rightValueExpression) {
         this.leftColumn = leftColumn;
         this.operationSymbol = operationSymbol;
@@ -108,6 +116,10 @@ public class ExpressionVo {
         return rightValueExpression;
     }
 
+    public FunctionVo getRightFunctionVo() {
+        return rightFunctionVo;
+    }
+
     public String getOperationSymbol() {
         return operationSymbol;
     }