solve problem of database Duplicate Emails

P-ppc · P-ppc · commit 3315e1fb4d71 · 2018-05-15T22:43:34.000+08:00
diff --git a/README.md b/README.md
@@ -37,4 +37,5 @@ All solutions will be accepted!
 |404|[Sum Of Left Leaves](https://leetcode-cn.com/problems/sum-of-left-leaves/description/)|[java/py/js](./algorithms/SumOfLeftLeaves)|Easy|
 
 # Database
-|596|[Big Countries](https://leetcode-cn.com/problems/big-countries/description/)|[mysql](./database/BigCountries)|Easy|
+|596|[Big Countries](https://leetcode-cn.com/problems/big-countries/description/)|[mysql](./database/BigCountries)|Easy|
+|182|[Duplicate Emails](https://leetcode-cn.com/problems/duplicate-emails/description/)|[mysql](./algorithms/DuplicateEmails)|Easy|
diff --git a/database/DuplicateEmails/README.md b/database/DuplicateEmails/README.md
@@ -0,0 +1,2 @@
+# Duplicate Emails
+This problem is easy to solve
diff --git a/database/DuplicateEmails/solution.sql b/database/DuplicateEmails/solution.sql
@@ -0,0 +1 @@
+select Email from Person group by Email having count(*) > 1

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	`+select Email from Person group by Email having count(*) > 1`