diff --git a/solutions.sql b/solutions.sql
new file mode 100644
index 0000000..b722894
--- /dev/null
+++ b/solutions.sql
@@ -0,0 +1,50 @@
+-- 1
+SELECT 
+    a.au_id AS "AUTHOR ID",  
+    a.au_lname AS "LAST NAME",  
+    a.au_fname AS "FIRST NAME",  
+    t.title AS "TITLE",  
+    p.pub_name AS "PUBLISHER"  
+FROM titleauthor ta  
+JOIN authors a ON ta.au_id = a.au_id  
+JOIN titles t ON ta.title_id = t.title_id  
+JOIN publishers p ON t.pub_id = p.pub_id;  
+
+-- 2
+SELECT 
+    a.au_id AS "AUTHOR ID",  
+    a.au_lname AS "LAST NAME",  
+    a.au_fname AS "FIRST NAME",  
+    p.pub_name AS "PUBLISHER",  
+    COUNT(t.title_id) AS "TITLE COUNT"  
+FROM titleauthor ta  
+JOIN authors a ON ta.au_id = a.au_id  
+JOIN titles t ON ta.title_id = t.title_id  
+JOIN publishers p ON t.pub_id = p.pub_id  
+GROUP BY a.au_id, p.pub_name  
+ORDER BY "TITLE COUNT" DESC;  
+
+-- 3
+SELECT 
+    a.au_id AS "AUTHOR ID",  
+    a.au_lname AS "LAST NAME",  
+    a.au_fname AS "FIRST NAME",  
+    SUM(t.ytd_sales) AS "TOTAL"  
+FROM titleauthor ta  
+JOIN authors a ON ta.au_id = a.au_id  
+JOIN titles t ON ta.title_id = t.title_id  
+GROUP BY a.au_id  
+ORDER BY "TOTAL" DESC  
+LIMIT 3;  
+
+-- 4
+SELECT 
+    a.au_id AS "AUTHOR ID",  
+    a.au_lname AS "LAST NAME",  
+    a.au_fname AS "FIRST NAME",  
+    COALESCE(SUM(t.ytd_sales), 0) AS "TOTAL"  
+FROM authors a  
+LEFT JOIN titleauthor ta ON a.au_id = ta.au_id  
+LEFT JOIN titles t ON ta.title_id = t.title_id  
+GROUP BY a.au_id  
+ORDER BY "TOTAL" DESC;