Problem set 1 solutions added by Maksim Eremeev (#52)

* Problem set 1 solutions added * Problem set 1 solutions added * minor
CrafterKolyan · Oct 2, 2019 · 569f67e · 569f67e
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diff --git a/task1/Eremeev_1_1.sql b/task1/Eremeev_1_1.sql
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+SELECT
+    customer_rk,
+    CASE
+        WHEN middle_nm LIKE '%А' THEN 'F'
+        WHEN middle_nm LIKE '%Ч' THEN 'M'
+    END AS Gender
+FROM cd_customers WHERE YEAR(valid_to_dttm) = 5999
diff --git a/task1/Eremeev_1_2.sql b/task1/Eremeev_1_2.sql
@@ -0,0 +1,6 @@
+SELECT
+    monthly_income_amt 
+FROM cd_customers 
+WHERE YEAR(valid_from_dttm) <= 2014 AND YEAR(valid_to_dttm) >= 2014 
+ORDER BY monthly_income_amt DESC 
+LIMIT 10
diff --git a/task1/Eremeev_1_3.sql b/task1/Eremeev_1_3.sql
@@ -0,0 +1,5 @@
+SELECT DISTINCT 
+    CONCAT(FLOOR(YEAR(birth_dt) / 10), '0-е') AS Generation 
+FROM cd_customers
+WHERE YEAR(valid_to_dttm) = 5999 
+ORDER BY Generation DESC