diff --git a/solution/0600-0699/0619.Biggest Single Number/README.md b/solution/0600-0699/0619.Biggest Single Number/README.md
index e79c820074bcf..89010b29bbfce 100644
--- a/solution/0600-0699/0619.Biggest Single Number/README.md	
+++ b/solution/0600-0699/0619.Biggest Single Number/README.md	
@@ -96,7 +96,13 @@ MyNumbers table:
 ### **SQL**
 
 ```sql
-
+SELECT MAX(a.num) AS num
+FROM (
+	SELECT num
+	FROM MyNumbers
+	GROUP BY num
+	HAVING count(*) = 1
+) a;
 ```
 
 <!-- tabs:end -->
diff --git a/solution/0600-0699/0619.Biggest Single Number/README_EN.md b/solution/0600-0699/0619.Biggest Single Number/README_EN.md
index 10b865b44b048..76b30d00bdc5b 100644
--- a/solution/0600-0699/0619.Biggest Single Number/README_EN.md	
+++ b/solution/0600-0699/0619.Biggest Single Number/README_EN.md	
@@ -84,7 +84,13 @@ MyNumbers table:
 ### **SQL**
 
 ```sql
-
+SELECT MAX(a.num) AS num
+FROM (
+	SELECT num
+	FROM MyNumbers
+	GROUP BY num
+	HAVING count(*) = 1
+) a;
 ```
 
 <!-- tabs:end -->
diff --git a/solution/0600-0699/0619.Biggest Single Number/Solution.sql b/solution/0600-0699/0619.Biggest Single Number/Solution.sql
new file mode 100644
index 0000000000000..c361570d1804d
--- /dev/null
+++ b/solution/0600-0699/0619.Biggest Single Number/Solution.sql	
@@ -0,0 +1,7 @@
+SELECT MAX(a.num) AS num
+FROM (
+	SELECT num
+	FROM MyNumbers
+	GROUP BY num
+	HAVING count(*) = 1
+) a;