[sabaka]

Sorry, my mistake. I didn't read carefully what version you are using. I've checked only development version at different points in time, while you are using 8.3p version.

So, you should upgrade to 9.0d and download latest nightly build in order to have outputs work properly.

[vostapenko]

When the fix is going to 8.3p branch?

I'm not planning to upgrade to 9.0 version in the nearest future=(

[sabaka]

This fix is not planned to go to 8.3p branch at all.. but there are work-arounds, which you can implement temporarily if this optimization issue is critical to performance of your app (until you upgrade to 9.0). For example, you could create alternative data source having only those fields you want in "listFetch" operation and fetch data from it without extra joins.

[vostapenko]

Pretty sad, i'm aware of such workaround, but using it will force me to implement up to 10 copies for each datasource - that's ugly=(