add window function

.pre-commit-config.yaml

 repos:
   - repo: git@codechina.csdn.net:csdn/skill_tree_hook.git
-    rev: 9430721405a57a809c0d93170fe307a89d979a4b
+    rev: 1420892936081c5885a8a27d3b6486c14c1be577
     hooks:
       - id: pre-commit
         verbose: true
\ No newline at end of file

data/2.PostgreSQL中阶/2.服务端编程/3.子查询/config.json

@@ -2,5 +2,7 @@
   "node_id": "pg-55fd213f919d411c9b572241c4bb7807",
   "keywords": [],
   "children": [],
-  "export": ["subquery.json"]
+  "export": [
+    "subquery.json"
+  ]
 }
\ No newline at end of file

data/3.PostgreSQL高阶/3.SQL高级技巧/1.递归查询/config.json

@@ -2,5 +2,7 @@
   "node_id": "pg-2e691ed3a847424eb887b40aca750c4e",
   "keywords": [],
   "children": [],
-  "export": ["continuous.json"]
+  "export": [
+    "continuous.json"
+  ]
 }
\ No newline at end of file

data/3.PostgreSQL高阶/3.SQL高级技巧/2.Window Function/config.json

+{
+  "keywords": [],
+  "children": [],
+  "node_id": "pg-cab66a558cda467eabd9587b5a8257bd",
+  "export": [
+    "salary.json"
+  ]
+}
\ No newline at end of file

data/3.PostgreSQL高阶/3.SQL高级技巧/2.Window Function/salary.json

+{
+  "type": "code_options",
+  "author": "ccat",
+  "source": "salary.md",
+  "notebook_enable": false,
+  "exercise_id": "6dc9ce6d2a354a9986585a458e5476c9"
+}
\ No newline at end of file

data/3.PostgreSQL高阶/3.SQL高级技巧/2.Window Function/salary.md

@@ -65,3 +65,10 @@ from employee
 where r <= 5;
 ```
 
+### 结构错误
+
+```postgresql
+select id, name, dept, salary, rank() as r over (partition by dept order by salary desc)
+from employee
+where r <= 5;
+```

data/tree.json

@@ -310,6 +310,13 @@
                       "children": []
                     }
                   },
+                  {
+                    "Window Function": {
+                      "node_id": "pg-cab66a558cda467eabd9587b5a8257bd",
+                      "keywords": [],
+                      "children": []
+                    }
+                  },
                   {
                     "透视表 ": {
                       "node_id": "pg-693a81467f444886a199bac681f238b8",