ABAP Select data from SAP table /BEV1/RSQUSE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /BEV1/RSQUSE table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to /BEV1/RSQUSE. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the /BEV1/RSQUSE table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_/BEV1/RSQUSE TYPE STANDARD TABLE OF /BEV1/RSQUSE,
      WA_/BEV1/RSQUSE TYPE /BEV1/RSQUSE,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: </BEV1/RSQUSE> TYPE /BEV1/RSQUSE.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/BEV1/RSQUSE.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /BEV1/RSQUSE
  INTO TABLE IT_/BEV1/RSQUSE.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /BEV1/RSQUSE
*  INTO TABLE @DATA(IT_/BEV1/RSQUSE2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_/BEV1/RSQUSE INDEX 1 INTO DATA(WA_/BEV1/RSQUSE2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/BEV1/RSQUSE ASSIGNING </BEV1/RSQUSE>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</BEV1/RSQUSE>-MANDT = 1.
</BEV1/RSQUSE>-TKNUM = 1.
</BEV1/RSQUSE>-FAHRER1 = 1.
</BEV1/RSQUSE>-NAME1 = 1.
</BEV1/RSQUSE>-FAHRER2 = 1.

ENDLOOP.

LOOP AT IT_/BEV1/RSQUSE INTO WA_/BEV1/RSQUSE.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/BEV1/RSQUSE-NAME2, sy-vline,
  WA_/BEV1/RSQUSE-FZGNR, sy-vline,
  WA_/BEV1/RSQUSE-BEZEI, sy-vline,
  WA_/BEV1/RSQUSE-NETWLAD, sy-vline,
  WA_/BEV1/RSQUSE-MWSTWERT, sy-vline,
  WA_/BEV1/RSQUSE-RABATTSUM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/BEV1/RSQUSE you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_/BEV1/RSQUSE TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_/BEV1/RSQUSE INTO WA_/BEV1/RSQUSE.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit ALPHA, internal->external for field TKNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/BEV1/RSQUSE-TKNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/BEV1/RSQUSE-TKNUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FAHRER1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/BEV1/RSQUSE-FAHRER1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/BEV1/RSQUSE-FAHRER1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FAHRER2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/BEV1/RSQUSE-FAHRER2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/BEV1/RSQUSE-FAHRER2.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_/BEV1/RSQUSE_STR, 
MANDT TYPE STRING,
TKNUM TYPE STRING,
FAHRER1 TYPE STRING,
NAME1 TYPE STRING,
FAHRER2 TYPE STRING,
NAME2 TYPE STRING,
FZGNR TYPE STRING,
BEZEI TYPE STRING,
NETWLAD TYPE STRING,
MWSTWERT TYPE STRING,
RABATTSUM TYPE STRING,
FBARLSRE TYPE STRING,
FBARLS TYPE STRING,
FBARLSRE1 TYPE STRING,
FSOLLBAR1 TYPE STRING,
FBARRESUM TYPE STRING,
FSOLLBAR2 TYPE STRING,
FCASH TYPE STRING,
BILANZ TYPE STRING,
WAERS TYPE STRING,
AEDAT TYPE STRING,
AEZEIT TYPE STRING,
AENAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/BEV1/RSQUSE_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_/BEV1/RSQUSE_STR-MANDT sy-vline 
WA_/BEV1/RSQUSE_STR-TKNUM sy-vline 
WA_/BEV1/RSQUSE_STR-FAHRER1 sy-vline 
WA_/BEV1/RSQUSE_STR-NAME1 sy-vline 
WA_/BEV1/RSQUSE_STR-FAHRER2 sy-vline 
WA_/BEV1/RSQUSE_STR-NAME2 sy-vline 
WA_/BEV1/RSQUSE_STR-FZGNR sy-vline 
WA_/BEV1/RSQUSE_STR-BEZEI sy-vline 
WA_/BEV1/RSQUSE_STR-NETWLAD sy-vline 
WA_/BEV1/RSQUSE_STR-MWSTWERT sy-vline 
WA_/BEV1/RSQUSE_STR-RABATTSUM sy-vline 
WA_/BEV1/RSQUSE_STR-FBARLSRE sy-vline 
WA_/BEV1/RSQUSE_STR-FBARLS sy-vline 
WA_/BEV1/RSQUSE_STR-FBARLSRE1 sy-vline 
WA_/BEV1/RSQUSE_STR-FSOLLBAR1 sy-vline 
WA_/BEV1/RSQUSE_STR-FBARRESUM sy-vline 
WA_/BEV1/RSQUSE_STR-FSOLLBAR2 sy-vline 
WA_/BEV1/RSQUSE_STR-FCASH sy-vline 
WA_/BEV1/RSQUSE_STR-BILANZ sy-vline 
WA_/BEV1/RSQUSE_STR-WAERS sy-vline 
WA_/BEV1/RSQUSE_STR-AEDAT sy-vline 
WA_/BEV1/RSQUSE_STR-AEZEIT sy-vline 
WA_/BEV1/RSQUSE_STR-AENAME sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.