On 9 May 2012, at 2:20am, YAN HONG YE <yanhong...@mpsa.com> wrote:

> alter table myref add stkcode varchar(30);
> update myref set stkcode = dzhhq.stkcode;
> 
> this sql command couldn't run in my sqlite.

It does not know which row from the table dzhhq it is meant to use.

Simon.
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