[introzen]

I'm unfamiliar with the mysql plugin for SAMP so I can't help you on that.

I'm unsure what the "." does in this?

pawn Code:

.worldid = HouseInfo[i][HouseExteriorVW], .interiorid = HouseInfo[i][HouseExteriorInt]

You could try disabling the pickups and see if it then goes through and updates the whole loop.

pawn Code:

UpdateHousePickup(id);