Re: @ operator

Your English is fine. @< is an "array is contained by" operator:

http://www.postgresql.org/docs/9.4/interactive/functions-array.html

I assume that field1 is an array, as opposed to just a simple value
variable. A simple value variable would be tested with something like:
field1 IN ( subquery) . The @< tests that every value in the array field1
is also in the subquery. The subquery might contain other values, but it
will contain _all_ values in field1.

On Thu, Sep 17, 2015 at 8:10 AM, Антон Бушмелев <bushmelev(dot)aa(at)gmail(dot)com>
wrote:

> Hello, google nothing for @ operator =(, what does this mean field1 <@
> ( subquery ) ?
>
>
> ps: sorry for my english
>

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