This is way too hard for something so simple so I'm posting it here.
data: lr_data type ref to data,
lt_seltable type TABLE OF rsparams,
ls_seltable type rsparams.
ls_seltable-LOW = '20160427'.
ls_seltable-SIGN = 'I'.
ls_seltable-OPTION = 'EQ'.
ls_seltable-SELNAME = 'SP$00001'.
ls_seltable-kind = 'S'.
append ls_seltable to lt_seltable.
CALL FUNCTION 'RSAQ_QUERY_CALL'
EXPORTING
WORKSPACE = 'G'
QUERY = 'name_of_query'
USERGROUP = 'name_of_group_in_sq01'
* VARIANT = ' '
* DBACC = 0
SKIP_SELSCREEN = 'X'
DATA_TO_MEMORY = 'X'
* FREE_SELECTIONS =
IMPORTING
REF_TO_LDATA = lr_data
* LISTTEXT =
* LIST_ID =
* PROGRAM =
* USED_VARIANT =
TABLES
SELECTION_TABLE = lt_seltable
* LISTDESC =
* FPAIRS =
EXCEPTIONS
NO_USERGROUP = 1
NO_QUERY = 2
QUERY_LOCKED = 3
GENERATION_CANCELLED = 4
NO_SELECTION = 5
NO_VARIANT = 6
JUST_VIA_VARIANT = 7
NO_SUBMIT_AUTH = 8
NO_DATA_SELECTED = 9
DATA_TO_MEMORY_NOT_POSSIBLE = 10
OTHERS = 11
.
IF SY-SUBRC <> 0.
* Implement suitable error handling here
ENDIF.
