Question

I require to create new tables for every client that signs up for my application.

For Example, I have two tables

Order_History_<ClientIdentifier>
Transcation_Log_<ClientIdentifier>

In SQL Server, how do I create tables with customized names on the go and how can I query them according to the client which is accessing my application.

Answer 1

very simple way:

create procedure CreateTableForUser
(
    @UserName nvarchar(100)
)
AS
BEGIN

declare @createScript nvarchar(max) =
'
create table dbo.Order_History_<ClientIdentifier>
(
    id int PRIMARY KEY,
    val nvarchar(100)
)
'

declare @createScript2 nvarchar(max) =
'
create table dbo.Transcation_Log_<ClientIdentifier>
(
    id int PRIMARY KEY,
    val nvarchar(100)
)
'

set @createScript = REPLACE(@createScript, '<ClientIdentifier>', @UserName)
set @createScript2 = REPLACE(@createScript2, '<ClientIdentifier>', @UserName)

exec sp_executesql @createScript
exec sp_executesql @createScript2

END

if you need something more “automatic”, like creating the tables from a template table by copying all his fields and keys i would use the sys. views but it’s a bit longer to write 😛