After close database, its filename should be cleared too.

[metab0t]

SQLite.jl/src/SQLite.jl

Line 47 in b964d19

function _close(db::DB)

Maybe db.file should be assigned as nothing after it is closed?

[quinnj]

Does this cause an issue somehow?

[metab0t]

No real issues. Just for semantic consistency, I think a closed database connection shouldn't contain filepath information unless it will be used to reopen it.