On Oct 1, 2013, at 12:23 PM, Adrian Klaver <adrian.kla...@gmail.com> wrote:
> On 10/01/2013 10:16 AM, Perry Smith wrote: >> With "make" I can do "make -n" and it just tells me what it would do but >> doesn't actually do anything. >> >> How could I do that with SQL? >> >> I want to write a really complicated (for me) SQL UPDATE statement. I'm >> sure I won't get it right the first time. Is there an easy way to not >> really make the changes? >> >> I've thought about starting a transaction and then roll it back. That would >> undo the changes. But I won't be able to tell what the changes were. > > Assuming you are not doing this in a function, you can. Do UPDATE, then > SELECT to see your changes or not and then ROLLBACK. Ah... yes. I forgot you can see the changes within the same transaction. Dohhh... Thank you very much Perry
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