diff --git a/ArticleViews1.sql b/ArticleViews1.sql
new file mode 100644
index 0000000..36b2477
--- /dev/null
+++ b/ArticleViews1.sql
@@ -0,0 +1,18 @@
+import pandas as pd
+
+def article_views(views: pd.DataFrame) -> pd.DataFrame:
+    df=views[views["author_id"]==views["viewer_id"]]
+    df.drop_duplicates(subset=["author_id"],inplace=True)
+    df.sort_values(by=["author_id"],inplace=True)
+    return df[["author_id"]].rename(columns={"author_id":"id"})
+
+# Method:2
+
+import pandas as pd
+
+def article_views(views: pd.DataFrame) -> pd.DataFrame:
+    df=views[views["author_id"]==views["viewer_id"]]
+    df=df["author_id"].unique()
+    df=pd.DataFrame(df,columns=["id"])
+    df.sort_values(by=["id"],inplace=True)
+    return df
\ No newline at end of file
diff --git a/InvalidTweets.sql b/InvalidTweets.sql
new file mode 100644
index 0000000..24dfdfe
--- /dev/null
+++ b/InvalidTweets.sql
@@ -0,0 +1,14 @@
+import pandas as pd
+
+def invalid_tweets(tweets: pd.DataFrame) -> pd.DataFrame:
+    isvalid=tweets["content"].str.len()>15
+    df=tweets[isvalid]
+    return df[["tweet_id"]]
+
+
+#method 2:
+import pandas as pd
+
+def invalid_tweets(tweets: pd.DataFrame) -> pd.DataFrame:
+    df=tweets[tweets["content"].str.len()>15]
+    return df[["tweet_id"]]
\ No newline at end of file