Database

Re: Invalid column name error?

4-Aug-09 4:44

Change

cdietschrun wrote:
package=992-700-358 and tester=TST-000-341

with

package='992-700-358' and tester='TST-000-341'

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cdietschrun4-Aug-09 4:50

cdietschrun

4-Aug-09 4:50

I thought so, but that code is generated by the SP, and I am having trouble with the quotation/apostrophes that properly encase each one. Could you help me and show me how to edit the SP itself?

Re: Invalid column name error?

cdietschrun4-Aug-09 4:58

cdietschrun

4-Aug-09 4:58

set @sql=@sql+'update tbl_swbom_checklist_testers set '+@COLUMN+'='''+@VALUE+''' '
set @sql=@sql+'where tester='''+convert(nvarchar(100),@tester)+''' and package='''+convert(nvarchar(255),@package)
set @sql=@sql+''''

Ended up looking like that, if anyone was curious.

Re: Invalid column name error? [modified]

Blue_Boy4-Aug-09 5:40

How to edit Dataset value (NOT DATA GRID)

4-Aug-09 5:40

Instead using four single quotes then use CHAR(39)

set @sql=@sql+'update tbl_swbom_checklist_testers set '+@COLUMN+'='+CHAR(39)+@VALUE+CHAR(39)<br />
set @sql=@sql+' where tester='+CHAR(39)+convert(nvarchar(100),@tester)+CHAR(39)+'  and package='+CHAR(39)+convert(nvarchar(255),@package)+CHAR(39)

Hope this helepd you.

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modified on Tuesday, August 4, 2009 11:56 AM

sacr834-Aug-09 0:12

sacr83

4-Aug-09 0:12

Hi All,

i want to edit DataSet value before binding to GridView. How can i do that..?

conn.open();

string result="select name,address,age";
sqlCommand cmnd=new sqlCommand(result);
sqlDataAdapter ad=new sqlDataAdapter(result,conn);
DataSet ds=new DataSet();
result.Connection=conn;
ad.SelectCommand=result;

// in here i want to edit (divide age value by 2) before bind data to gridview.

ad.fill(ds);
GridView1.DataSource=ds;
GridView1.DataBind();

conn.close();

i want to divide age value by 2 before bind data to gridview.How can i do that...???

Thank you very much .....

CheeN

Re: How to edit Dataset value (NOT DATA GRID)

Kschuler4-Aug-09 3:14

Kschuler

4-Aug-09 3:14

A DataSet object is a collection of DataTable objects. You could loop through the table and update the age with something like this:

For Each row As DataRow In ds.Tables(0).Rows<br />
   row("age") = row("age") / 2<br />
Next

Or you could just do it in the select by changing your select statement to this string:
"select name, address, age/2 as age"

Hope this helps.

Re: How to edit Dataset value (NOT DATA GRID)

sacr835-Aug-09 20:21

sacr83

5-Aug-09 20:21

Thank u 4 your post. I fixed my problem..Thank u all...

CheeN

Re: How to edit Dataset value (NOT DATA GRID)

Andy_L_J4-Aug-09 9:38

Andy_L_J

4-Aug-09 9:38

For Each dr As DataRow In ds.Tables(0).Rows

  dr("ColumnName") = (dr("ColumnName") / 2)

Next

Where ColumnName is your data column in the DataSet Table.

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sql server comparing two huge tables

ps_prakash023-Aug-09 21:26

3-Aug-09 21:26

Hi Guys,

I'm in need of your help.

my problem is, i have two tables namely MASTER and LINECONTENT.

"MASTER" table contains 5,00,000 records,
The columns in MASTER table is
masterid int, masterdesc varchar(1000).

"LINECONTENT" table contains more than 1000 records &
its columns are pageno int, lineno int, content varchar(2000).

I want to compare each row of "MASTER" table, masterdesc column value with the "LINECONTENT" table content column,
If any records matched i want to take the matched master record and store it in another table.

for this i used the below query.

select b.* from linecontent a
join master b on a.content like '%'+b.masterdesc+'%'

but this query is taking much. more than 15 minutes
i want to decrease the time give me some suggestions handle this problem

thank you
regards,
prakash

Mycroft Holmes3-Aug-09 23:18

Mycroft Holmes

3-Aug-09 23:18

Throw an index on MasterDesc

Try and use charindex in the where clause - it may not help, just an idea.

Never underestimate the power of human stupidity
RAH

ps_prakash023-Aug-09 23:50

3-Aug-09 23:50

Hi,

Thanks for your reply.

sorry i forgot tell you that i have created nonclustered index in both tables. In "MASTER" i have created non-clustered index for masterdesc column similarly in "LINECONTENT" table i have created non-clustered index for "content" field. even though its taking time.

thanks & regards
P.Prakash

David Skelly4-Aug-09 2:10

David Skelly

4-Aug-09 2:10

Putting an index on masterdesc will not make any difference to this query because you are using a leading wildcard: LIKE '%abcde%'. The query optimiser will not even try to use an index for this: it will just go through the rows one by one checking each in turn, because that's all it can do.

So basically the query will take every row in LINECONTENT and test it against every row in MASTER. That's why it's taking so long.

ps_prakash024-Aug-09 2:26

4-Aug-09 2:26

Hi,

but my functionality is like that. i want to compare "master" table with "linecontent" table and matching rows should be taken. so i have written like that but its taking nearly 15 minutes. i want to decrease the time to some 2 to 3 minutes. please tell me the solution

Thanks & Regards,
P.Prakash

David Skelly4-Aug-09 6:20

David Skelly

4-Aug-09 6:20

I understand what you are trying to do. The problem is that a leading wildcard search is a performance killer, end of story. There is no quick fix or easy answer.

Depending on which version of SQL Server you are using, you may be able to use Full Text indexing. I can't remember whether that was added at SQL Server 2005 or SQL Server 2008 off the top of my head.

Otherwise, I would recommend looking at something like Lucene or Microsoft Search Server to see how they work, as they do something similar to what you are trying to achieve.

Mycroft Holmes4-Aug-09 16:12

Mycroft Holmes

4-Aug-09 16:12

I wonder if he tested charindex and if it give a better performance. I would be surprised if it did but needs testing.

Never underestimate the power of human stupidity
RAH

ps_prakash024-Aug-09 17:44

4-Aug-09 17:44

Hi,

I could not understand what you have said.
Could me please explain me deeply.

Thanks & Regards,
P.Prakash

ps_prakash024-Aug-09 17:39

4-Aug-09 17:39

Hi,

thanks for your answer,
we are using sql server 2005 i'll look for those two options you have specified.

regards,
P.Prakash

ps_prakash025-Aug-09 2:09

5-Aug-09 2:09

Hi David Skelly,

for this problem can we use table partition method. will it help me to solve the problem.

Thanks & Regards,
Prakash

Blue_Boy3-Aug-09 23:24

3-Aug-09 23:24

Try this

select master.masterdesc <br />
from master ,linecontent<br />
where master.masterdesc = linecontent.content<br />

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ps_prakash024-Aug-09 0:28

4-Aug-09 0:28

Hi,

Thanks for your reply.

i tried for your solution but still i'm having same performance

just give me some solutions

thanks & Regards
Prakash

Blue_Boy4-Aug-09 4:46

4-Aug-09 4:46

Perhaps you should check this result.[^]

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"Don't torture yourself,let the life to do it for you."
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ps_prakash024-Aug-09 21:52