Tsearch doesn't support such scan. You can add your own operation or modify
existing, but in any case index will not support it.
I don't known efficient index structure for queries you need...
Yudie Pg wrote:
> Is it possible to search partial word as *like '%...%'* in tsearch?
>
> Yudie
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Teodor Sigaev E-mail: teodor(at)sigaev(dot)ru
WWW: http://www.sigaev.ru/