diff --git a/mybatis-flex-core/src/test/java/com/mybatisflex/coretest/FunctionSqlTest.java b/mybatis-flex-core/src/test/java/com/mybatisflex/coretest/FunctionSqlTest.java
index 62f73ccb..dc087f22 100644
--- a/mybatis-flex-core/src/test/java/com/mybatisflex/coretest/FunctionSqlTest.java
+++ b/mybatis-flex-core/src/test/java/com/mybatisflex/coretest/FunctionSqlTest.java
@@ -21,6 +21,7 @@ import com.mybatisflex.core.query.QueryWrapper;
 import com.mybatisflex.core.query.StringQueryColumn;
 import org.junit.Test;
 
+import static com.mybatisflex.core.query.QueryMethods.*;
 import static com.mybatisflex.coretest.table.AccountTableDef.ACCOUNT;
 
 /**
@@ -40,4 +41,15 @@ public class FunctionSqlTest {
         System.out.println(sql);
     }
 
+    @Test
+    public void test02() {
+        String sql = QueryWrapper.create()
+                .select(concatWs(string("abc"), ACCOUNT.USER_NAME, ACCOUNT.BIRTHDAY))
+                .select(abs(number(-3)))
+                .from(ACCOUNT)
+                .where(not(ACCOUNT.ID.eq(1)))
+                .toSQL();
+        System.out.println(sql);
+    }
+
 }
\ No newline at end of file