inserting data in a column in an existing table

Hi the gems...

I have an existing table TABLE_1 which has more data in it. This table has no primary key. now, I added a new column 'ID' and want to make it a primary key for this table. currently it is not allowed because the column is null...

so I need to insert data into the column.
now, my plan is to fill the column with the data as well as rownumber.

means that if there are 15 records in this table, then the 'ID' column should contain data from 1 to 15. After that, I'll do the column as a primary key...

the script I wrote for this:

declare
number of v_rownum;

Start
Select max (rownum) in the v_rownum from TABLE_1;
because me in 1.v_rownum
loop
Update t set i = t.id TABLE_1 where rownum = i;
commit;
end loop;

end;

but it refreshes only the first record and the rest of the records are not updated.

Please help... Thanks in advance...

Select max (rownum) in the v_rownum from TABLE_1;

How many rows do you think that this query will retrieve?

Why not just

Update TABLE_1 t
the value t.id = rownum;

Tags: Database

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Inserting data from a query to an existing table

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Hello

I'm working on
The Version of database: Oracle 9i

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Kind regards
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I have an existing table of some 30 million lines.

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Published by: 896596 on May 16, 2012 09:05
896596 wrote:
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>
How do I change my user type to be sufficient?
>
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