add generate time script

sql/create.sql

@@ -22,6 +22,68 @@ CREATE TABLE dim_time (
 );
 GO
 
+DROP PROCEDURE IF EXISTS [dbo].[sPopulateDimDates_v2]
+GO
+
+CREATE PROCEDURE [dbo].[sPopulateDimDates_v2]
+@FromDate DATE = '1950-01-01',
+@ToDate DATE = '2050-12-31'
+
+AS
+BEGIN
+DECLARE @DimDates TABLE
+(
+	time_sk INTEGER identity(1,1) PRIMARY KEY,
+	time_bk DATE NOT NULL,
+	time_string NCHAR(10) NOT NULL,
+	year INTEGER,
+	month INTEGER,
+	day INTEGER,
+	quarter INTEGER
+);
+
+--Setting language
+SET LANGUAGE English
+ 
+--Populating Dimension
+WHILE @FromDate <= @ToDate
+	BEGIN
+		INSERT INTO @DimDates(
+			time_bk, 
+			time_string, 
+			year,
+			month,
+			day,
+			quarter
+            )
+            SELECT 
+			@FromDate as time_bk,
+			convert(nvarchar(10), @FromDate,20) AS time_string,
+            MONTH(@FromDate) AS [month],
+            YEAR(@FromDate) AS [year],
+			DAY(@FromDate) AS [day],
+            DATENAME(QUARTER,@FromDate) AS [quarter]
+      SET @FromDate = DATEADD(DAY, 1, @FromDate)
+END
+
+INSERT INTO dbo.dim_time(
+			time_bk, 
+			time_string, 
+			year,
+			month,
+			day,
+			quarter
+            )
+SELECT time_bk, time_string, year, month, day,quarter
+FROM @DimDates
+ 
+END
+GO
+
+EXEC [dbo].[sPopulateDimDates_v2]
+GO
+
+
 DROP TABLE IF EXISTS dim_drugs;
 CREATE TABLE dim_drugs (
 	drug_sk INTEGER identity(1, 1) PRIMARY KEY,