Solved

concat in dynamic sql

Posted on 2008-06-12
4
375 Views
Last Modified: 2008-06-19
How can I concat string in dynamic sql?
I need to put the below SQL in Dynamic sql
Select ID ,Question, answer, (question + ':' +  answer) as Question_Text from table
where question = @question


I've tried somthing like below but i keep getting an error?
Declare @sql varchar(max)


set @sql = 'Select ID ,Question, answer, (question + ''':''' + answer) as Question_Text from table  where question = ' + @Question + ''
Exec @sql
0
Comment
Question by:jung1975
  • 2
4 Comments
 
LVL 142

Assisted Solution

by:Guy Hengel [angelIII / a3]
Guy Hengel [angelIII / a3] earned 200 total points
ID: 21773762
you had 1 quote too much:
set @sql = 'Select ID ,Question, answer, (question + '':'' + answer) as Question_Text from table  where question = ' + @Question + ''
Exec @sql

Open in new window

0
 
LVL 142

Assisted Solution

by:Guy Hengel [angelIII / a3]
Guy Hengel [angelIII / a3] earned 200 total points
ID: 21773776
in case question is a varchar:

notice: it must be exec(@sql) and not exec @sql, otherwise it excepts @sql to be the name of a stored proc.
set @sql = 'Select ID ,Question, answer, (question + '':'' + answer) as Question_Text from table  where question = ''' + replace(@Question, '''', '''''') + ''' ' 
Exec (@sql)

Open in new window

0
 
LVL 8

Accepted Solution

by:
i2mental earned 150 total points
ID: 21773792
assuming @question is varchar

DECLARE @question VARCHAR(10)
DECLARE @sql VARCHAR(1000)
SET @question = 'what?'
SET @sql = 'Select ID ,Question, answer, (question + '':'' +  answer) as Question_Text from table
where question = '''+@question+''''
PRINT @sql
0
 
LVL 60

Assisted Solution

by:chapmandew
chapmandew earned 150 total points
ID: 21774213
use sp_executesql instead...it does a better job of caching the query plan

set @sql = 'Select ID ,Question, answer, (question + '':'' + answer) as Question_Text from table  where question = ' + @Question + ''
Exec sp_executesql @sql

and it allows you to pass varaibles to it.
0

Featured Post

Complete VMware vSphere® ESX(i) & Hyper-V Backup

Capture your entire system, including the host, with patented disk imaging integrated with VMware VADP / Microsoft VSS and RCT. RTOs is as low as 15 seconds with Acronis Active Restore™. You can enjoy unlimited P2V/V2V migrations from any source (even from a different hypervisor)

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Slowly Changing Dimension Transformation component in data task flow is very useful for us to manage and control how data changes in SSIS.
The Delta outage: 650 cancelled flights, more than 1200 delayed flights, thousands of frustrated customers, tens of millions of dollars in damages – plus untold reputational damage to one of the world’s most trusted airlines. All due to a catastroph…
Via a live example, show how to set up a backup for SQL Server using a Maintenance Plan and how to schedule the job into SQL Server Agent.
Viewers will learn how to use the INSERT statement to insert data into their tables. It will also introduce the NULL statement, to show them what happens when no value is giving for any given column.

813 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

13 Experts available now in Live!

Get 1:1 Help Now