IF Boolean_expression { sql_statement | statement_block }
[ ELSE { sql_statement | statement_block } ] -- 若要定义语句块，请使用控制流关键字 BEGIN 和 END。

IF search_condition THEN statement_list[ELSEIF search_condition THEN statement_list] ...[ELSE statement_list]
END IF

declare @tempShoppingCart table (ProductId int, Quantity int)
insert into @tempShoppingCart (ProductId, Quantity)select ProductId, Quantity from ShoppingCart where UserGuid = @UserGuiddeclare @productId int
declare @quantity int
declare tempCartCursor cursor for select ProductId, Quantity from @tempShoppingCartopen tempCartCursor
fetch next from tempCartCursor into @productId, @quantity
while  @@FETCH_STATUS = 0
beginupdate Product set SellCount = SellCount + @quantity    where productId = @productIdfetch next from tempCartCursor into @productId, @quantity
endclose tempCartCursor
deallocate tempCartCursor

declare m_done int default 0;
declare m_sectionId int;
declare m_newsId int;declare _cursor_SN cursor for select sectionid, newsid from _temp_SN;
declare continue handler for not found set m_done = 1;create temporary table _temp_SN select sectionid, newsid from SectionNews  group by sectionid, newsid having count(*) > 1;open _cursor_SN;
while( m_done = 0 ) dofetch _cursor_SN into m_sectionId, m_newsId;if( m_done = 0 ) then -- 具体的处理逻辑end if;
end while;
close _cursor_SN;
drop table _temp_SN;

create procedure GetProductByCategoryId( @CategoryID int, @PageIndex int = 0, @PageSize int = 20, @TotalRecords int output
)
as
begindeclare @ResultTable table
( RowIndex int, ProductID int, ProductName nvarchar(50), CategoryID int, Unit nvarchar(10), UnitPrice money, Quantity int
); insert into @ResultTable
select row_number() over (order by ProductID asc) as RowIndex, p.ProductID, p.ProductName, p.CategoryID, p.Unit, p.UnitPrice, p.Quantity
from   Products as p
where CategoryID = @CategoryID; select  @TotalRecords = count(*) from  @ResultTable; select *
from   @ResultTable
where  RowIndex > (@PageSize * @PageIndex) and RowIndex <= (@PageSize * (@PageIndex+1)); end;

当然，SqlServer中并不只有这一种写法，只是这种写法是比较常见而已。

create procedure GetProductsByCategoryId(in _categoryId int,in _pageIndex int,in _pageSize int,out _totalRecCount int
)
beginset @categoryId = _categoryId;set @startRow = _pageIndex * _pageSize;set @pageSize = _pageSize;prepare PageSql from 'select sql_calc_found_rows * from product  where categoryId = ? order by ProductId desc limit ?, ?';execute PageSql using @categoryId, @startRow, @pageSize;deallocate prepare PageSql;set _totalRecCount = found_rows();end