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SQL selective replace


 
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# 1  
Old 12-21-2013
SQL selective replace

Hi

I have a table which looks like this
Code:
id | name | length | clone | null
1 | string 1 | 12345643 | string 1 | NULL |
2 | string 2 | 2345612 | string 2 | NULL |
3 | string 3 | 3421556 | string 3 | NULL |
4 | string 4 | 1236742 | string 4 | NULL |
5 | string 5 | 2312677 | string 5 | NULL |
6 |string 6 | 12786315 | string 6 | NULL |
7 | string 7 | 2341135 | string 7 | NULL |
8 |string 8 | 452189 | string 8 | NULL |
9 |string 9 | 124343 | string 9 | NULL |
10 | string 10 | 3432344 | string 10 | NULL |
.....

I wanted to replace all names columns having id> 5 to sequence.
Keep the first 5 entries the same but replace all others name = "sequence[id]"
and clone entry to be changed as clone = "sequence[id]"
The table should look like this

Code:
id | name | length | clone | null
1 | string 1 | 12345643 | string 1 | NULL |
2 | string 2 | 2345612 | string 2 | NULL |
3 | string 3 | 3421556 | string 3 | NULL |
4 | string 4 | 1236742 | string 4 | NULL |
5 | string 5 | 2312677 | string 5 | NULL |
6 |sequence 6 | 12786315 | sequence 6 | NULL |
7 | sequence 7 | 2341135 | sequence 7 | NULL |
8 |sequence 8 | 452189 | sequence 8 | NULL |
9 |sequence 9 | 124343 | sequence 9 | NULL |
10 | sequence 10 | 3432344 | sequence 10 | NULL |



i did use this command
Code:
UPDATE tablename 

SET name = "sequence[id]"
where id >5;

What is my error?

Please do advise.

Last edited by Scott; 12-21-2013 at 05:09 AM.. Reason: Please use code tags
# 2  
Old 12-21-2013
There is a replace function that can do just that:
Code:
SQL> update tablename set name = replace( name, 'string', 'sequence' ) where id > 5;

(assuming Oracle or mySQL)
This User Gave Thanks to Scott For This Post:
# 3  
Old 12-21-2013
thanks!
 

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