2019-03-18

Author: JalanJiang

SUMMARY.md

@@ -5,4 +5,11 @@
     * [第二高的薪水](/database/176.md)
     * [超过经理收入的员工](/database/181.md)
     * [查找重复的电子邮箱](/database/182.md)
-    * [从不订购的客户](/database/183.md)
+    * [从不订购的客户](/database/183.md)
+    * [删除重复的电子邮箱](/database/196.md)
+    * [上升的温度](/database/197.md)
+    * [大的国家](/database/595.md)
+    * [超过5名学生的课](/database/596.md)
+    * [有趣的电影](/database/620.md)
+    * [交换工资](/database/627.md)
+    * [分数排名](/database/178.md)

_book/.idea/vcs.xml

@@ -242,6 +242,111 @@
 
 
 
+        </li>
+    
+        <li class="chapter " data-level="1.2.6" data-path="196.html">
+            
+                <a href="196.html">
+            
+                    
+                        <b>1.2.6.</b>
+                    
+                    删除重复的电子邮箱
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.2.7" data-path="197.html">
+            
+                <a href="197.html">
+            
+                    
+                        <b>1.2.7.</b>
+                    
+                    上升的温度
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.2.8" data-path="595.html">
+            
+                <a href="595.html">
+            
+                    
+                        <b>1.2.8.</b>
+                    
+                    大的国家
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.2.9" data-path="596.html">
+            
+                <a href="596.html">
+            
+                    
+                        <b>1.2.9.</b>
+                    
+                    超过5名学生的课
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.2.10" data-path="620.html">
+            
+                <a href="620.html">
+            
+                    
+                        <b>1.2.10.</b>
+                    
+                    有趣的电影
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.2.11" data-path="627.html">
+            
+                <a href="627.html">
+            
+                    
+                        <b>1.2.11.</b>
+                    
+                    交换工资
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.2.12" data-path="178.html">
+            
+                <a href="178.html">
+            
+                    
+                        <b>1.2.12.</b>
+                    
+                    分数排名
+            
+                </a>
+            
+
+            
         </li>
 
 
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 </div>

_book/.idea/workspace.xml

@@ -244,6 +244,111 @@
 
 
 
+        </li>
+    
+        <li class="chapter " data-level="1.2.6" data-path="196.html">
+            
+                <a href="196.html">
+            
+                    
+                        <b>1.2.6.</b>
+                    
+                    删除重复的电子邮箱
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.2.7" data-path="197.html">
+            
+                <a href="197.html">
+            
+                    
+                        <b>1.2.7.</b>
+                    
+                    上升的温度
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.2.8" data-path="595.html">
+            
+                <a href="595.html">
+            
+                    
+                        <b>1.2.8.</b>
+                    
+                    大的国家
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.2.9" data-path="596.html">
+            
+                <a href="596.html">
+            
+                    
+                        <b>1.2.9.</b>
+                    
+                    超过5名学生的课
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.2.10" data-path="620.html">
+            
+                <a href="620.html">
+            
+                    
+                        <b>1.2.10.</b>
+                    
+                    有趣的电影
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.2.11" data-path="627.html">
+            
+                <a href="627.html">
+            
+                    
+                        <b>1.2.11.</b>
+                    
+                    交换工资
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.2.12" data-path="178.html">
+            
+                <a href="178.html">
+            
+                    
+                        <b>1.2.12.</b>
+                    
+                    分数排名
+            
+                </a>
+            
+
+            
         </li>
 
 
@@ -351,7 +456,7 @@ <h1 class="search-results-title">No results matching "<span class='search-query'
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         gitbook.push(function() {
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_book/database/175.html

@@ -0,0 +1,22 @@
+## 177. 第N高的薪水
+
+[原题链接]()
+
+### 知识点
+
+- `DISTINCT`
+- `LIMIT m, n`
+- `ORDER BY xxx DESC`
+
+### 解答
+
+```sql
+CREATE FUNCTION getNthHighestSalary(N INT) RETURNS INT
+BEGIN
+  SET N = N - 1;
+  RETURN (
+      # Write your MySQL query statement below.
+      SELECT DISTINCT Salary FROM Employee ORDER BY Salary DESC LIMIT N, 1
+  );
+END
+```