I'm growing in containers, a couple of raised beds and a small greenhouse and I've not had success with much.
Outside slugs have been my archenemy and eaten anything I've tried growing in my veg bed to the point I'm fed up seeing seedlings one day and bare earth the next! I won't even try direct sowing next year. They've also had more than their fair share of my bean plants, which are in grow bags, although I see now there are some beans developing but probably only enough for 2/3 boilings from 3 plants!
I've had one courgette(!) from 2 plants, one of which seems only to be producing male flowers. I've had fruit from but then they've rotted when they were still really small.
A patty-pan squash hasn't produced anything, although I can see flowers forming but they come to nothing.
Tomatoes started well and I had lots of flowers but only about half the trusses formed fruit and the few that we've had so far have smaller than I'd expect and some have been floury. Some have also got blossom end rot.
Similar thing with my cucumber, plenty flowers but not many developing fruit.
To be fair, we were away for the 10 days in July when the weather was at its best in Fife, then again for 6 days in August and friends were looking after the garden so inconsistent watering might have been a problem in the greenhouse some of the time.
On the plus side, my lettuces have done well and it looks like I'm going to have a decent chilli crop!