feat: add sql solutions to lc problems: No.1164,1173 (#1205)

* No.1164.Product Price at a Given Date
* No.1173.Immediate Food Delivery I

Author: yanglbme

.prettierignore

@@ -15,7 +15,6 @@ node_modules/
 /solution/bash_problem_readme_template_en.md
 /solution/0100-0199/0177.Nth Highest Salary/Solution.sql
 /solution/0600-0699/0627.Swap Salary/Solution.sql
-/solution/1100-1199/1173.Immediate Food Delivery I/Solution.sql
 /solution/1400-1499/1454.Active Users/Solution.sql
 /solution/1400-1499/1484.Group Sold Products By The Date/Solution.sql
 /solution/1500-1599/1511.Customer Order Frequency/Solution.sql

solution/1100-1199/1164.Product Price at a Given Date/README.md

@@ -92,4 +92,32 @@ FROM
         ON p1.product_id = p2.product_id;
 ```
 
+```sql
+# Write your MySQL query statement below
+WITH
+    P AS (
+        SELECT p1.product_id, new_price, change_date
+        FROM
+            (
+                SELECT DISTINCT product_id
+                FROM Products
+            ) AS p1
+            LEFT JOIN Products AS p2
+                ON p1.product_id = p2.product_id
+                AND p2.change_date <= '2019-08-16'
+    ),
+    T AS (
+        SELECT
+            *,
+            rank() OVER (
+                PARTITION BY product_id
+                ORDER BY change_date DESC
+            ) AS rk
+        FROM P
+    )
+SELECT product_id, ifnull(new_price, 10) AS price
+FROM T
+WHERE rk = 1;
+```
+
 <!-- tabs:end -->

solution/1100-1199/1164.Product Price at a Given Date/README_EN.md

@@ -88,4 +88,32 @@ FROM
         ON p1.product_id = p2.product_id;
 ```
 
+```sql
+# Write your MySQL query statement below
+WITH
+    P AS (
+        SELECT p1.product_id, new_price, change_date
+        FROM
+            (
+                SELECT DISTINCT product_id
+                FROM Products
+            ) AS p1
+            LEFT JOIN Products AS p2
+                ON p1.product_id = p2.product_id
+                AND p2.change_date <= '2019-08-16'
+    ),
+    T AS (
+        SELECT
+            *,
+            rank() OVER (
+                PARTITION BY product_id
+                ORDER BY change_date DESC
+            ) AS rk
+        FROM P
+    )
+SELECT product_id, ifnull(new_price, 10) AS price
+FROM T
+WHERE rk = 1;
+```
+
 <!-- tabs:end -->

solution/1100-1199/1164.Product Price at a Given Date/Solution.sql

@@ -1,28 +1,25 @@
 # Write your MySQL query statement below
-SELECT
-    p1.product_id AS product_id,
-    ifnull(p2.price, 10) AS price
-FROM
-    (
-        SELECT DISTINCT
-            (product_id) AS product_id
-        FROM Products
-    ) AS p1
-    LEFT JOIN (
-        SELECT
-            t1.product_id,
-            t1.new_price AS price
+WITH
+    P AS (
+        SELECT p1.product_id, new_price, change_date
         FROM
-            Products AS t1
-            JOIN (
-                SELECT
-                    product_id,
-                    max(change_date) AS change_date
+            (
+                SELECT DISTINCT product_id
                 FROM Products
-                WHERE change_date <= '2019-08-16'
-                GROUP BY product_id
-            ) AS t2
-                ON t1.product_id = t2.product_id
-                AND t1.change_date = t2.change_date
-    ) AS p2
-        ON p1.product_id = p2.product_id;
+            ) AS p1
+            LEFT JOIN Products AS p2
+                ON p1.product_id = p2.product_id
+                AND p2.change_date <= '2019-08-16'
+    ),
+    T AS (
+        SELECT
+            *,
+            rank() OVER (
+                PARTITION BY product_id
+                ORDER BY change_date DESC
+            ) AS rk
+        FROM P
+    )
+SELECT product_id, ifnull(new_price, 10) AS price
+FROM T
+WHERE rk = 1;

solution/1100-1199/1173.Immediate Food Delivery I/README.md

@@ -64,13 +64,12 @@ Delivery 表:
 
 ```sql
 # Write your MySQL query statement below
-select
+SELECT
     round(
-        sum(if(order_date = customer_pref_delivery_date, 1, 0)) / count(1) * 100,
+        sum(order_date = customer_pref_delivery_date) * 100 / count(1),
         2
-    ) as immediate_percentage
-from
-    Delivery;
+    ) AS immediate_percentage
+FROM Delivery;
 ```
 
 <!-- tabs:end -->

solution/1100-1199/1173.Immediate Food Delivery I/README_EN.md

@@ -60,13 +60,12 @@ Delivery table:
 
 ```sql
 # Write your MySQL query statement below
-select
+SELECT
     round(
-        sum(if(order_date = customer_pref_delivery_date, 1, 0)) / count(1) * 100,
+        sum(order_date = customer_pref_delivery_date) * 100 / count(1),
         2
-    ) as immediate_percentage
-from
-    Delivery;
+    ) AS immediate_percentage
+FROM Delivery;
 ```
 
 <!-- tabs:end -->

solution/1100-1199/1173.Immediate Food Delivery I/Solution.sql

@@ -1,8 +1,7 @@
 # Write your MySQL query statement below
-select
+SELECT
     round(
-        sum(if(order_date = customer_pref_delivery_date, 1, 0)) / count(1) * 100,
+        sum(order_date = customer_pref_delivery_date) * 100 / count(1),
         2
-    ) as immediate_percentage
-from
-    Delivery;
+    ) AS immediate_percentage
+FROM Delivery;