>>> Michael Fuhr <[EMAIL PROTECTED]> 12/14/04 1:45 PM >>>
>>On Tue, Dec 14, 2004 at 11:48:21AM -0600, Kall, Bruce A. wrote:
>> What is the easiest way to copy a particular row from one table to
>> another (assuming all the columns are exactly the same). I want to
>> maintain a table ('backup_table') that has rows I have (or will be)
>> deleting from my 'original_table'. (Both tables have the same 68
columns).
>>
>> I've tried
>>
>> INSERT INTO backup_table SELECT * FROM original_table WHERE
id='2305'
>That should work if the table definitions are identical or
compatible,
>including column positions being the same. Didn't it work? If not,
>what happened?
One cute way to guarantee that the table definitions are identical is:
CREATE TABLE backup_table AS SELECT * FROM original_table WHERE 1=0;
That ensures that subsequently doing the following is safe:
INSERT INTO backup_table SELECT * FROM original_table WHERE id='2305';
---------------------------(end of broadcast)---------------------------
TIP 9: the planner will ignore your desire to choose an index scan if your
joining column's datatypes do not match
