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extracting the specified record no of records from database table

Answered extracting the specified record no of records from database table

  • Sunday, June 11, 2006 8:24 AM
     
     
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    hi all,

    I need to select the no of records on the basis of specified range of records.

    In oracle i found rownum, i could not find it in sqlserver. how the data are extracted from the huge records..

    I have used temporary table,map the table primary key to the next table with identity

    but i dont find it good. I need to ignore the insert the data in next table or craeting new table having the rowid ...

    Is there some other best  way  to  extract the specified data

    here is the type of query.

    select * from customers where rownum between 1000 and 10000

    this is in oracle

    i am in need to do this in the sql server

    waiting for the response...............................

     

     

All Replies

  • Sunday, June 11, 2006 8:27 AM
     
     
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    There is no such thing like row number in MS SQL. You will need to create an identity column in your table, or maintain the number column manually.
     
  • Sunday, June 11, 2006 4:20 PM
     
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    If you are using SQL Server 2005 then you can use the ROW_NUMBER() function instead:
     
    select *
    from (select *, row_number() over(order by CustomerId) as rownum
    from customers
    ) as c
    where c.rownum between 1000 and 10000;
     
    If you are using SQL Server 2000  then the identity column approach using temporary table is the best way to go (I guess you are doing this now based on the information in your post).
     
    Also, it seems like you are trying to batch some DML operation. If so you can use  SET ROWCOUNT or TOP clause in DML (SQL Server 2005). See below for example:
     
    declare @n int
    set @n = 1000 -- set number of rows you want to insert at a time
    set rowcount @n
    while(1=1)
    begin
    insert into MasterCustomers
    select ...
    from Customers as c1
    where not exists(
    select * from MasterCustomers as c2
    where c2.CustomerName = c1.CustomerName)
     
    if @@rowcount = 0 break
    end
    set rowcount 0
     
    -- using TOP
     
    declare @n int
    set @n = 1000 -- set number of rows you want to insert at a time
    while(1=1)
    begin
    insert top(@n) into MasterCustomers
    select ...
    from Customers as c1
    where not exists(
    select * from MasterCustomers as c2
    where c2.CustomerName = c1.CustomerName)
     
    if @@rowcount = 0 break
    end
     
     
  • Sunday, June 11, 2006 10:43 PM
     
     
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    SQL 2000 does not have the limit keyord. You can use double TOP instead of, but you must have a primary key on that table
    select * from
            (select top 1000 * from (
                    select top 11000 *
                    from customers
                    order by customer_id asc
                    ) as  tmp1
            order by cutomer_id desc
    ) as  tmp2
    order by ...

    for extract customers betweeen 10000 and 11000 based on customer_id
     
  • Saturday, October 14, 2006 1:56 AM
     
     
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    if you use sql2005

    you also can use the function ROW_NUMBER() to

    select rownum between 1000 and 10000 like oracle

    example:

    with customers _temp as

    (SELECT ROW_NUMBER() OVER (order by customer) as RowNumber,*
    from customers) 
    select * 
    from customers _temp
    where RowNumber between 1000 and 10000