double not exists problem

data/2.MySQL中阶/1.数据库组成/8.存储引擎/config.json → data/2.MySQL中阶/1.数据库组成/7.存储引擎/config.json

 {
   "node_id": "mysql-af89d54d66974111b4f67aeba2af7161",
-  "keywords": [],
+  "keywords": ["engine", "innodb", "myisam"],
   "children": [],
   "export": [],
   "keywords_must": []

data/3.MySQL高阶/3.SQL高级技巧/4.Double Not Exists/DoubleNotExists.json

+{
+  "type": "code_options",
+  "author": "Mars Liu",
+  "source": "DoubleNotExists.md",
+  "notebook_enable": false,
+  "exercise_id": "2fabb69f22224e48a26fec8911798ceb"
+}
\ No newline at end of file

data/3.MySQL高阶/3.SQL高级技巧/4.Double Not Exists/DoubleNotExists.md

+# Double Not Exists Check
+
+风控部们的数据库中有一组关于招投标的数据，关键信息如下：
+
+```mysql
+-- 招标项目
+create table invitation
+(
+    id         int primary key auto_increment,
+    name       varchar(256),
+    attachment text
+    -- ignore more detail ...
+);
+
+-- 竞标企业
+create table company
+(
+    id   int primary key auto_increment,
+    name varchar(256)
+    -- ignore more detail ...
+);
+
+-- 投标记录
+create table bids
+(
+    id            int primary key auto_increment,
+    invitation_id int references invitation (id),
+    company_id    int references company (id)
+    -- ignore more detail ...
+);
+
+```
+
+Joe 想要找出参与了所有投标的企业（有围标嫌疑），那么这个查询应该怎么写？
+
+## 答案
+
+```mysql
+select *
+from company
+where not exists(
+        select *
+        from invitation
+        where not exists(
+                select *
+                from bids
+                where invitation.id = bids.invitation_id
+                  and bids.company_id = company.id
+            )
+    )
+```
+
+## 选项
+
+### A
+
+```mysql
+select *
+from company
+where id = all (select company_id
+                from bids)
+```
+
+### B
+
+```mysql
+select *
+from company
+where id = any (select company_id
+                from bids)
+```
+
+### C
+
+```mysql
+select *
+from company
+where company.id in (select distinct company_id from bids) 
+```
+
+### D
+
+```mysql
+select *
+from company
+where exists(
+              select *
+              from bids
+              where bids.company_id = company.id
+          ) 
+```
\ No newline at end of file

data/3.MySQL高阶/3.SQL高级技巧/4.Double Not Exists/config.json

+{
+  "node_id": "mysql-72761d60ad7c4a9a9c87435daca246b9",
+  "keywords": [
+    "exists",
+    "not exists",
+    "double not exists"
+  ],
+  "children": [],
+  "export": [
+    "DoubleNotExists.json"
+  ],
+  "keywords_must": [],
+  "keywords_forbid": [],
+  "groups": 2
+}
\ No newline at end of file

data/3.MySQL高阶/5.设计优化/3. 范式设计/config.json

+{
+  "node_id": "mysql-bee8db3dd5354a42bb50277fe4cb2913",
+  "keywords": [],
+  "children": [],
+  "export": [
+    "customer_order.json"
+  ],
+  "keywords_must": [],
+  "keywords_forbid": [],
+  "group": 2
+}
\ No newline at end of file

data/3.MySQL高阶/5.设计优化/5.增加中间表/config.json → data/3.MySQL高阶/5.设计优化/6.增加中间表/config.json

 {
   "node_id": "mysql-a2ddae1b044149ecbb74db3b6eb32721",
-  "keywords": [],
+  "keywords": ["middle", "中间表"],
   "children": [],
   "export": [],
   "keywords_must": [],

data/tree.json

@@ -93,7 +93,12 @@
                   {
                     " 创建和删除数据库": {
                       "node_id": "mysql-764d5080ddb943fe9236922984afa152",
-                      "keywords": [],
+                      "keywords": [
+                        "create database",
+                        "drop database",
+                        "创建数据库",
+                        "删除数据库"
+                      ],
                       "children": [],
                       "keywords_must": [],
                       "keywords_forbid": []
@@ -120,7 +125,10 @@
                   {
                     "存储引擎": {
                       "node_id": "mysql-cd45ce715f914ef2895df639a5d206a3",
-                      "keywords": [],
+                      "keywords": [
+                        "engine",
+                        "存储引擎"
+                      ],
                       "children": [],
                       "keywords_must": [],
                       "keywords_forbid": []
@@ -483,15 +491,6 @@
                       "keywords_forbid": []
                     }
                   },
-                  {
-                    "存储引擎": {
-                      "node_id": "mysql-af89d54d66974111b4f67aeba2af7161",
-                      "keywords": [],
-                      "children": [],
-                      "keywords_must": [],
-                      "keywords_forbid": []
-                    }
-                  },
                   {
                     " 触发器": {
                       "node_id": "mysql-d1d26b008711441f82192c33e1fe4dd7",
@@ -529,7 +528,10 @@
                   {
                     " 别名": {
                       "node_id": "mysql-1d350c6226d443bdb76b5058d8ee23e7",
-                      "keywords": [],
+                      "keywords": [
+                        "aliases",
+                        "别名"
+                      ],
                       "children": [],
                       "keywords_must": [],
                       "keywords_forbid": []
@@ -640,7 +642,10 @@
                   {
                     " 求和": {
                       "node_id": "mysql-c5654c150993418a96f692496837fbb7",
-                      "keywords": [],
+                      "keywords": [
+                        "sum",
+                        "求和"
+                      ],
                       "children": [],
                       "keywords_must": [],
                       "keywords_forbid": []
@@ -1766,6 +1771,15 @@
                       "keywords_forbid": []
                     }
                   },
+                  {
+                    " 范式设计": {
+                      "node_id": "mysql-bee8db3dd5354a42bb50277fe4cb2913",
+                      "keywords": [],
+                      "children": [],
+                      "keywords_must": [],
+                      "keywords_forbid": []
+                    }
+                  },
                   {
                     "反范式设计": {
                       "node_id": "mysql-3e4c837b471c454c90bfbc32445f2780",

gears/sql/bids.sql

+create table invitation
+(
+    id         int primary key auto_increment,
+    name       varchar(256),
+    attachment text
+    -- ignore more detail ...
+);
+
+create table company(
+                        id int primary key auto_increment,
+                        name varchar(256)
+    -- ignore more detail ...
+);
+
+create table bids
+(
+    id int primary key auto_increment,
+    invitation_id int references invitation(id),
+    company_id int references company(id)
+    -- ignore more detail ...
+);
+
+-- double not exists sample
+select *
+from company
+where not exists(
+        select *
+        from invitation
+        where not exists(
+                select *
+                from bids
+                where invitation.id = bids.invitation_id
+                  and bids.company_id = company.id
+            )
+    )
\ No newline at end of file