These are the packages that would be merged, in order:

Calculating dependencies ... done!
Dependency resolution took 1.00 s (backtrack: 0/20).

[ebuild  N     ] dev-db/libzdb-3.6.0::gentoo  USE="sqlite ssl -debug -doc -mysql -postgres -static-libs" 1026 KiB

Total: 1 package (1 new), Size of downloads: 1026 KiB