maria-discuss team mailing list archive

[Roberto Spadim <roberto@xxxxxxxxxxxxx>]

:) yes no problem


2014-09-04 13:47 GMT-03:00 Sergei Golubchik <serg@xxxxxxxxxxx>:

> Hi, Roberto!
>
> On Aug 12, Roberto Spadim wrote:
> > guys, i have some queries like this:
> > SELECT doc_hash_key FROM mov_documentos WHERE doc_hash_key LIKE
> > "j;1;$;294007/3nfe-1%"
> > UNION
> > SELECT doc_hash_key FROM mov_documentos WHERE doc_hash_key LIKE
> > "j;1;%;294007/3nfe-1%"
> > UNION
> > SELECT doc_hash_key FROM mov_documentos WHERE doc_hash_key LIKE
> > "j;1;%;%294007/3nfe-1%"
> > UNION
> > SELECT doc_hash_key FROM mov_documentos WHERE doc_hash_key LIKE
> > "%;%;$;%294007/3nfe-1%"
> > UNION
> > SELECT doc_hash_key FROM mov_documentos WHERE doc_hash_key LIKE
> > "%;%;%;294007/3nfe-1%"
> > UNION
> > SELECT doc_hash_key FROM mov_documentos WHERE doc_hash_key LIKE
> > "%;%;%;%294007/3nfe-1%"
> > LIMIT 1
> >
> >
> > it's a search about a document number, but the problem is....
> > the first query at first line (with % at end of the query) return really
> > fast, but executing others queries are very slow, the question is
> > could we optimize this kind of query, since limit=1 row?
>
> Sounds very reasonable. And, I hope, not too difficult to implement.
> Could you please put this in Jira?
>
> Regards,
> Sergei
>



-- 
Roberto Spadim
SPAEmpresarial
Eng. Automação e Controle