How we create a tables in DB2 ?Previously client has using
7 letters for user id,now he wants to increase the letters
from 7 to 12 for user id.How we can do it?
- 6 Answers
- 8856 Views
- Wipro, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / anish
for the 1st question:
v can create table by the COMMAND
CREATE TABLE table-name
column1 char(9)
.
.
...so on
And according to your installation u have to mention the
tablespace name & DB name.
for the 2nd question:
ALTER TABLE table-name
MODIFY USER_ID CHAR(12);
| Is This Answer Correct ? | 6 Yes | 1 No |
Answer / shailendra
i think, the size of variable is not possible to change,
please correct me if i am wrong.
so for the solutionwe can creat new table with change of
the size of user_id char(12)
and if you want the same name of table
step1 >creat a table for interface perpose with user_id char
(12)
2> insert all the data in the interface table
3> delete the main table.
4> create table with same name of main table with
user_id char(12)
5> insert data from interface table to main table.
now i think it will work.
| Is This Answer Correct ? | 3 Yes | 1 No |
Answer / guest
It is always possible to increase the size of the variable.
It is not possible to decrese the size.
| Is This Answer Correct ? | 2 Yes | 1 No |
Answer / ram prajapati
in any other database it is possible to alter the size of
the table's column but it is not possible do it in db2.
no modify command is there in db2 to be used in the
respective sql.
i'm a bit too sure about it so plz correct me when i'm wrong
with a reference link.plz.
| Is This Answer Correct ? | 1 Yes | 0 No |
Hi Ram Prajapati ,
In db2 (esp in version 9.5) it is poosible to increase the
size of a column without loosing the data.
But u can not decrease the size.
Cheers ,
Ratheesh Nellikkal
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / hi
Yes, it's possible to increase/decrease the size. While
decreasing, need to make sure that none of the records
present in the column conflict the modification. e.g. to
reduce the size of the column which is CHAR(6) to CHAR(4),
with one of the record value as 'ABCDE' will give an error.
| Is This Answer Correct ? | 1 Yes | 1 No |
When Can you be sure that a query will return only one row?
What is the use of reorg in db2?
how do you resolve -818 error in db2. where we have to see time stamp token. i said by seeing in load module and plan .is it correct or not. give clear explination for how to see time stamp token
Write a query to extract first 5 characters of a name in the column Stud_Name?
select * from orders where odate between '2010-01-01'and '2010-03-31' How do u fetch this into cursor?
What is referential integrity?
What are concurrency issues?
What kind of database is db2?
What is the use of with ur in db2?
How to handle null values in db2
What does CURRENTDATA option in bind indicate
What is the purpose of using commit?
COBOL 
