Question

create loop using vbscript/asp to update values of recordset by using values of record 1 to update values of record 2

Asked by: fzaza

I have an sql table with fields (id, value1, value2)

id value1 value 2
1  5         10
2  23       12
3  34       23
4  22       24

what i need is to create a vbscript of similar style to the one below which will run through a loop and for each row will proceed as follows:
1. get values of current row (which will use to update next row)
2. update values of current row with values taken from previous record
3. move to next row and get values of current row
4. update values of current row with values in step1
5. add new record in the end with last data

the resulting values of table must be after loop:

id value1 value2
1  5        10
2  5        10
3  23      12
4 34        23
5 22        24

   i = 0
    dim old1, old2
    old2 = 100
    mysql2 = "SELECT value1, value2 FROM table1"
      set rstemp2 = Server.CreateObject("ADODB.Recordset")
      rstemp2.Open mysql2, conn, 1,2
      do until rstemp2.eof
      old1 = rstemp2.fields("value1").value
      rstemp2.movenext
      i = i + 1
      loop
      rstemp2.close
      set rstemp2 = nothing

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Asked On
2009-04-10 at 04:05:01ID24312063
Tags

vbscript asp sql

Topics

Databases Miscellaneous

,

Active Server Pages (ASP)

,

MS SQL Server

Participating Experts
1
Points
250
Comments
2

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Answers

 

by: Sharath_123Posted on 2009-04-10 at 17:17:05ID: 24120353


All you need is incremnt the ID by 1 and insert a record with minimum id. Why can't you try like this.

The LOOP is slower than the DML statements. So use UPDATE/INSERT statement to do this.

Let me know if you still looking for loop.

create table #temp (id int,value1 int,value2 int)
insert #temp values (1,5,10),(2,23,12),(3,34,23),(4,22,24)
update #temp set id = id + 1 
insert #temp select id-1,value1,value2 from #temp where id = (select MIN(id) from #temp)
select * from #temp order by 1
/*
id	value1	value2
1	5	10
2	5	10
3	23	12
4	34	23
5	22	24
*/ 
drop table #temp

                                              
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