In this post about SQLite, aaronasterling told me that
cmd = "attach \"%s\" as toMerge" % "b.db"
: is wrongcmd = 'attach "{0}" as toMerge'.format("b.db")
: is correctcmd = "attach ? as toMerge"; cursor.execute(cmd, ('b.db', ))
: is right thing
But, I've thought the first and second is the same. What are the differences between those three?