Copy structure only (copy all the columns)
Select Top 0 * into NewTable from OldTable
Copy structure only (copy some columns)
Select Top 0 Col1,Col2,Col3,Col4,Col5 into NewTable from OldTable
Copy structure with data
Select * into NewTable from OldTable
If you already have a table with same structure and you just want to copy data then use this
Insert into NewTable Select * from OldTable