1.0.9

src/main/java/com/github/yulichang/common/support/AliasQueryWrapper.java

@@ -25,6 +25,10 @@ public class AliasQueryWrapper<T> extends QueryWrapper<T> {
      */
     @Override
     protected String columnToString(String column) {
-        return StringUtils.isBlank(alias) ? column : (alias + StringPool.DOT + column);
+        if (column.lastIndexOf(StringPool.DOT) < 0) {
+            return StringUtils.isBlank(alias) ? column : (alias + StringPool.DOT + column);
+        } else {
+            return column;
+        }
     }
 }

src/main/java/com/github/yulichang/common/support/README.md

@@ -79,4 +79,46 @@ QueryWrapper.eq("u.id", 1);
 
 AliasQueryWrapper别名一次设置全局通用,不需要每个字段都加别名
 
+说明:  
+对于非主表字段查询也是支持的
+
+```java
+class MpJoinTest {
+    @Resource
+    private UserMapper userMapper;
+
+    @Test
+    void test() {
+        UserDTO userDTO = userMapper.userLeftJoin(new AliasQueryWrapper<>()
+                .setAlias("u")
+                .eq("id", "1")
+                .like("sex", "3")
+                .eq("ua.tel", "10086")           //如果查询字段中有点(.)则不会添加别名
+                .like("ua.address", "北京"));
+    }
+}
+```
+对应sql:
+```
+select 
+    u.*,
+    ua.tel 
+from user u 
+    left join user_address ua on u.id = ua.user_id 
+WHERE (
+    u.id = ? 
+    AND u.sex LIKE ? 
+    AND ua.tel = ? 
+    AND ua.address LIKE ?)
+```
+
+注意:如果你喜欢骚操作,请使用原生QueryWrapper  
+举例:
+* .eq("(select sex from user where id = u.id)", "男")
+* .eq("count(u.id)", 1)
+
+不建议在QueryWrapper中使用sql或函数  
+除非你不考虑后续的维护和sql调优
+
+
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