Create leetflex-banned-accounts.sql

rhshriva · Feb 7, 2021 · 04125ad · 04125ad
1 parent d6c85a6
commit 04125ad
Showing 1 changed file with 10 additions and 0 deletions.
diff --git a/MySQL/leetflex-banned-accounts.sql b/MySQL/leetflex-banned-accounts.sql
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+# Time:  O(n^2)
+# Space: O(n)
+
+SELECT DISTINCT l1.account_id
+FROM   loginfo l1
+       INNER JOIN loginfo l2
+               ON l1.account_id = l2.account_id
+                  AND l1.ip_address != l2.ip_address
+WHERE  NOT (l1.login > l2.logout
+            OR l1.logout < l2.login);