Procedure which creates table along with dates - sql-server

Question

I want to create a dyamic procedure which accepts tablename, startdate and enddate
which goes like this `
alter procedure task_date #tablename nvarchar(max), #start as datetime,#end as datetime
as begin
declare #t1 as nvarchar(max)
declare #t2 as nvarchar(max)
set #t1='create table '+#tablename+'_'+#start+'(int id)'
set #t1='create table '+#tablename+'_'+#end+'(int id)'
exec(#t1)
exec(#t2)
end
`
If I pass parameters to my stored procedure like this
`exec task_date name,'21/2/2017','24/2/2016`'
Then it should create two tables as abc_21Feb2017 , abc_22Feb2017, abc_23Feb2017, abc_24Feb2017, Means difference between the dates also should be created as tables along with startdate and enddate with underscore seperation
Note: My code is wrong here, i want the proper code along with correct logic, help me out

Answer 1

You could try following solution:
DECLARE #StartDate DATE = '2017-02-22';
DECLARE #EndDate DATE = '2017-02-24';
DECLARE #SqlStatement NVARCHAR(MAX) = N'';
WITH Num10(Number)
AS (
SELECT 1 UNION ALL SELECT 2 UNION ALL SELECT 3 UNION ALL SELECT 4 UNION ALL SELECT 5 UNION ALL
SELECT 6 UNION ALL SELECT 7 UNION ALL SELECT 8 UNION ALL SELECT 9 UNION ALL SELECT 10
),
Num100(Number)
AS (
SELECT (a.Number - 1)*10 + b.Number FROM Num10 a CROSS JOIN Num10 b
)
SELECT #SqlStatement = #SqlStatement
+ N'CREATE TABLE ' + N'dbo.CocoJamboTable' + N'_' + REPLACE(CONVERT(VARCHAR(25), DATEADD(DAY, n.Number - 1, '2017-02-22'), 106), ' ', '') + N'(INT ID)'
+ CHAR(13) + CHAR(10)
FROM Num100 n
WHERE n.Number <= DATEDIFF(DAY, #StartDate, #EndDate) + 1;
PRINT #SqlStatement
--EXEC sp_executesql #SqlStatement
This will generate and execute(--UNCOMMENT LAST LINE) following script:
CREATE TABLE dbo.CocoJamboStupidNameTable_22Feb2017(ID INT)
CREATE TABLE dbo.CocoJamboStupidNameTable_23Feb2017(ID INT)
CREATE TABLE dbo.CocoJamboStupidNameTable_24Feb2017(ID INT)
Edit 1:
[1] N10 and N100 CTEs returns all numbers between 1 and 10 or 1 and 100.
These CTEs could be replaced with a table with numbers. An example of such table can be found here.
[2] Main SELECT statement returns numbers (starting with 1) from N100 CTE or from number table.
[3] DATEDIFF(DAY, #StartDate, #EndDate) + 1 compute number of days between #StartDate and #EndDate including (+1) last one (#EndDate). For example, number of days between 2017-02-22 and 2017-02-24 isn't 2 (24 - 22) but 2 + 1 = 3 (if we take into account 22 but also 24).
[4] WHERE n.Number <= DATEDIFF(DAY, #StartDate, #EndDate) + 1; filter all numbers between 1 and number of days (= difference between start date and end date).
[5] SELECT DATEADD(DAY, n.Number - 1, '2017-02-22') compute all dates between start date and also end date: 2017-02-22, 23, 24.
[6] SELECT N'CREATE TABLE .... DATEADD(DAY, n.Number, ... will generate the SQL CREATE TABLE scripts for every date between start date and end date.

Answer 2

A simple while loop with a test on date might suffice
use sandbox
go
drop procedure p
go
CREATE procedure [dbo].[p]
#start date ,
#end date
as
declare #t nvarchar(max)
while #start <= #end
begin
set #t= concat('create table abc_',replace(cast(#start as varchar(10)),'-','_'),char(40), 'id int' ,char(41))
print #t
EXEC sp_executesql #t
set #start = dateadd(d,1,#start)
end
GO
exec dbo.p '2017-06-21','2017-06-25'
select table_name from information_schema.tables where table_name like 'abc%'
Result
table_name
--------------
abc_2017_06_21
abc_2017_06_22
abc_2017_06_23
abc_2017_06_24
abc_2017_06_25
Note the use of ascii characters for left and right parenthesis and the replace to remove illegal - in table name.