# this matches the second-level account but displays only the first-level name
bin/hledger -f - register aa --depth 1
<<<
2010/1/1 x
  a:aa:aaa      1
  b

>>>
2010/01/01 x                    a                                 1            1
>>>=0

# this matches the second-level account, displays the second-level name, does not aggregate transactions
bin/hledger -f - register aa --depth 2
<<<
2010/1/1 x
  a:aa      1
  b:bb:bbb

2010/1/1 y
  a:aa      1
  b:bb:bbb

2010/1/2 z
  a:aa      1
  b:bb:bbb

>>>
2010/01/01 x                    a:aa                              1            1
2010/01/01 y                    a:aa                              1            2
2010/01/02 z                    a:aa                              1            3
>>>=0

# this matches the second-level account, displays the first-level name, aggregates by reporting interval
bin/hledger -f - register aa --depth 1 --daily
<<<
2010/1/1 x
  a:aa      1
  b:bb:bbb

2010/1/1 y
  a:aa      1
  b:bb:bbb

2010/1/2 z
  a:aa      1
  b:bb:bbb

>>>
2010/01/01 - 2010/01/01         a                                 2            2
2010/01/02 - 2010/01/02         a                                 1            3
>>>=0