This question already has an answer here:
My apologies if this question is off-topic here, but it is a discussion about how to use a network-wide tool specific to SE.
The question in its entirety is in the title, really. How can I use the StackExchange Data Explorer to run a query across all sites in the network? I cannot seem to find a way to search more than one (set with the drop-down next to
Compose Query) – is this status-bydesign or is there a workaround?