Merge pull request #339 from kapilbk1996/SQL-511

SQL-511:- Convert Month Number to Month Name Function in SQL

Author: maibin

sql-queries-dates/convert-month-number-to-name/using-case-statement.sql

@@ -0,0 +1,23 @@
+-- Create sample table
+CREATE TABLE sales_data (
+    id INT,
+    month_number INT,
+    amount DECIMAL(10,2)
+);
+
+-- Insert sample data
+INSERT INTO sales_data VALUES
+(1, 1, 1500.00), (2, 3, 2200.50), (3, 7, 1895.75), (4, 12, 3100.00);
+
+-- Convert month number to month name using CASE statement
+SELECT 
+    id,
+    month_number,
+    CASE month_number
+        WHEN 1 THEN 'January' WHEN 2 THEN 'February' WHEN 3 THEN 'March'
+        WHEN 4 THEN 'April' WHEN 5 THEN 'May' WHEN 6 THEN 'June'
+        WHEN 7 THEN 'July' WHEN 8 THEN 'August' WHEN 9 THEN 'September'
+        WHEN 10 THEN 'October' WHEN 11 THEN 'November' WHEN 12 THEN 'December'
+    END AS month_name,
+    amount
+FROM sales_data;

sql-queries-dates/convert-month-number-to-name/using-custom-function.sql

@@ -0,0 +1,26 @@
+-- Create sample table
+CREATE TABLE sales_data (
+    id INT,
+    month_number INT,
+    amount DECIMAL(10,2)
+);
+
+-- Insert sample data
+INSERT INTO sales_data VALUES
+(1, 1, 1500.00), (2, 3, 2200.50), (3, 7, 1895.75), (4, 12, 3100.00);
+
+-- Create a custom function to convert month number to month name
+CREATE FUNCTION dbo.MonthName (@month_number INT)
+RETURNS VARCHAR(20)
+AS
+BEGIN
+    RETURN DATENAME(MONTH, DATEFROMPARTS(2000, @month_number, 1))
+END;
+
+-- Invoking the custom function
+SELECT 
+    id,
+    month_number,
+    dbo.MonthName(month_number) AS month_name,
+    amount
+FROM sales_data;

sql-queries-dates/convert-month-number-to-name/using-datename.sql

@@ -0,0 +1,18 @@
+-- Create sample table
+CREATE TABLE sales_data (
+    id INT,
+    month_number INT,
+    amount DECIMAL(10,2)
+);
+
+-- Insert sample data
+INSERT INTO sales_data VALUES
+(1, 1, 1500.00), (2, 3, 2200.50), (3, 7, 1895.75), (4, 12, 3100.00);
+
+-- Convert month number to month name using the DATENAME function
+SELECT 
+    id,
+    month_number,
+    DATENAME(MONTH, DATEFROMPARTS(2000, month_number, 1)) AS month_name,
+    amount
+FROM sales_data;

sql-queries-dates/convert-month-number-to-name/using-format.sql

@@ -0,0 +1,18 @@
+-- Create sample table
+CREATE TABLE sales_data (
+    id INT,
+    month_number INT,
+    amount DECIMAL(10,2)
+);
+
+-- Insert sample data
+INSERT INTO sales_data VALUES
+(1, 1, 1500.00), (2, 3, 2200.50), (3, 7, 1895.75), (4, 12, 3100.00);
+
+-- Convert month number to month name using the FORMAT function
+SELECT 
+    id,
+    month_number,
+    FORMAT(DATEFROMPARTS(2000, month_number, 1), 'MMMM') AS month_name,
+    amount
+FROM sales_data;