Creating dynamic table name and table column in SQL Server 2008? - sql-server

Question

I want to create a dynamic table in SQL Server using dynamic Table name and dynamic Column name. For example:
Table name : 01-02-2015
Column names:
Id 01 02 03.... 28
When I creating a temp table is OK but I want to create a real Table then I use the following script like this, when execute the error occur:
Msg 102, Level 15, State 1, Line 1
Incorrect syntax near '.01'.
Code:
DECLARE #DynamicSQL as NVARCHAR(max),#TempTableName as nvarchar(max)
DECLARE #TimeSheetDate as DateTime
DECLARE #startDate AS DATETIME --Cursor Local Variables
DECLARE #endDate AS DATETIME
SET #TimeSheetDate = '2015-2-15'
SET #startDate = DATEADD(mm, DATEDIFF(mm, 0, #TimeSheetDate), 0) -- the first day of month
SET #endDate = DATEADD (dd, -1, DATEADD(mm, DATEDIFF(mm, 0, #TimeSheetDate) + 1, 0))-- the last day of month
SET #TempTableName = #startDate -- the first day of month
SET #DynamicSQL='CREATE TABLE dbo.'+ quotename(#TempTableName, '[') + '(Id int identity(1,1) not null primary key);';
WHILE (#startDate <= #endDate)
BEGIN
--DECLARE #DynamicSQL VARCHAR(500)
BEGIN
SET #DynamicSQL = 'ALTER TABLE dbo.' + #TempTableName +
' ADD ['+ CONVERT(VARCHAR(2), #startDate, 105) + '] NVARCHAR(max) NULL'
EXECUTE (#DynamicSQL)
END
SET #startDate = DateADD(dd, 1, #startDate)
IF #startDate - 1 = #endDate
BREAK;
END
exec (#DynamicSQL);
If I use this script to create a temp table is OK:
DECLARE #TempTableName as nvarchar(100)
DECLARE #TimeSheetDate as DateTime
DECLARE #startDate AS DATETIME --Cursor Local Variables
DECLARE #endDate AS DATETIME
SET #TimeSheetDate = '2015-2-15'
SET #startDate = DATEADD(mm, DATEDIFF(mm, 0, #TimeSheetDate), 0)
SET #endDate = DATEADD (dd, -1, DATEADD(mm, DATEDIFF(mm, 0, #TimeSheetDate) + 1, 0))
SET #TempTableName = DATEADD(mm, DATEDIFF(mm, 0, #TimeSheetDate), 0)
if exists (select * from tempdb.dbo.sysobjects o where o.xtype in ('U') and o.id = object_id(N'tempdb..##TempTableName'))
DROP TABLE ##TempTableName
CREATE TABLE ##TempTableName(Id int identity(1,1) not null primary key) -- Creating Temp Table
-- Loop to add columns to temp table
WHILE (#startDate <=#endDate)
BEGIN
DECLARE #DynamicSQL VARCHAR(500)
BEGIN
SET #DynamicSQL = 'ALTER TABLE ##TempTableName ADD ['+ CONVERT(VARCHAR(2),#startDate,105) +'] NVARCHAR(100) NULL'
EXECUTE (#DynamicSQL)
END
SET #startDate = DateADD(dd,1,#startDate)
IF #startDate-1 = #endDate
BREAK;
END
SELECT * FROM ##TempTableName

Answer 1

The problem is in your alter table statement.
Change
SET #DynamicSQL = 'ALTER TABLE dbo.' + #TempTableName +
' ADD ['+ CONVERT(VARCHAR(2), #startDate, 105) + '] NVARCHAR(max) NULL'
To
SET #DynamicSQL = 'ALTER TABLE dbo.' + quotename(#TempTableName, '[') +
' ADD ['+ CONVERT(VARCHAR(2), #startDate, 105) + '] NVARCHAR(max) NULL'

Answer 2

This works for my expectation:
ALTER PROCEDURE [dbo].[proc_InsertTimeSheetInit]
#TimeSheetDate as DateTime
AS
BEGIN
DECLARE #DynamicSQL as NVARCHAR(255)
DECLARE #TableName as nvarchar(255)
DECLARE #startDate AS DATETIME
DECLARE #endDate AS DATETIME
DECLARE #dropSQL as NVARCHAR(255)
SET #startDate = DATEADD(mm, DATEDIFF(mm, 0, #TimeSheetDate), 0) -- the first day of month
SET #endDate = DATEADD (dd, -1, DATEADD(mm, DATEDIFF(mm, 0, #TimeSheetDate) + 1, 0))-- the last day of month
SET #TableName ='TS'+convert(nvarchar(2), datepart(mm, #TimeSheetDate)) + convert(nvarchar(4), datepart(yyyy, #TimeSheetDate))
IF EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].['+ #TableName+ ']') AND type in (N'U'))
SELECT #dropSQL = 'DROP TABLE dbo.' + QUOTENAME(#TableName) + '';
exec (#dropSQL)
SET #DynamicSQL = 'create table [dbo].[' + #TableName + ']([Id] [int] IDENTITY(1,1) NOT NULL,CONSTRAINT PK_'+#TableName+' PRIMARY KEY CLUSTERED (Id))'
exec (#DynamicSQL)
WHILE (#startDate <= #endDate)
BEGIN
BEGIN
SET #DynamicSQL = 'ALTER TABLE [dbo].[' + #TableName + '] ADD ['+ CONVERT(VARCHAR(2), #startDate, 105) + '] NVARCHAR(50) NULL'
EXECUTE (#DynamicSQL)
END
SET #startDate = DateADD(dd, 1, #startDate)
IF #startDate - 1 = #endDate
BREAK;
END
END