ABAP Select data from SAP table REIS_IT_OR_CALC_SUBOBJ_L into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP REIS_IT_OR_CALC_SUBOBJ_L 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 REIS_IT_OR_CALC_SUBOBJ_L. 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 REIS_IT_OR_CALC_SUBOBJ_L 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_REIS_IT_OR_CALC_SUBOBJ_L TYPE STANDARD TABLE OF REIS_IT_OR_CALC_SUBOBJ_L,
      WA_REIS_IT_OR_CALC_SUBOBJ_L TYPE REIS_IT_OR_CALC_SUBOBJ_L,
      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: <REIS_IT_OR_CALC_SUBOBJ_L> TYPE REIS_IT_OR_CALC_SUBOBJ_L.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM REIS_IT_OR_CALC_SUBOBJ_L
  INTO TABLE IT_REIS_IT_OR_CALC_SUBOBJ_L.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REIS_IT_OR_CALC_SUBOBJ_L
*  INTO TABLE @DATA(IT_REIS_IT_OR_CALC_SUBOBJ_L2).
*--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_REIS_IT_OR_CALC_SUBOBJ_L INDEX 1 INTO DATA(WA_REIS_IT_OR_CALC_SUBOBJ_L2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_REIS_IT_OR_CALC_SUBOBJ_L ASSIGNING <REIS_IT_OR_CALC_SUBOBJ_L>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REIS_IT_OR_CALC_SUBOBJ_L>-SUBOBJNR = 1.
<REIS_IT_OR_CALC_SUBOBJ_L>-OBJNRCN = 1.
<REIS_IT_OR_CALC_SUBOBJ_L>-SUMMEASSUB = 1.
<REIS_IT_OR_CALC_SUBOBJ_L>-SUMNOTOPTSUB = 1.
<REIS_IT_OR_CALC_SUBOBJ_L>-SUMOPTSUB = 1.

ENDLOOP.

LOOP AT IT_REIS_IT_OR_CALC_SUBOBJ_L INTO WA_REIS_IT_OR_CALC_SUBOBJ_L.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REIS_IT_OR_CALC_SUBOBJ_L-OPTRATESUB, sy-vline,
  WA_REIS_IT_OR_CALC_SUBOBJ_L-ISVACANT, sy-vline,
  WA_REIS_IT_OR_CALC_SUBOBJ_L-HASNXTCN, sy-vline,
  WA_REIS_IT_OR_CALC_SUBOBJ_L-OPTRATESUBCHAR, sy-vline,
  WA_REIS_IT_OR_CALC_SUBOBJ_L-OBJTYPESUB, sy-vline,
  WA_REIS_IT_OR_CALC_SUBOBJ_L-OBJECTIDSUB, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REIS_IT_OR_CALC_SUBOBJ_L 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_REIS_IT_OR_CALC_SUBOBJ_L 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_REIS_IT_OR_CALC_SUBOBJ_L INTO WA_REIS_IT_OR_CALC_SUBOBJ_L.


*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 SWENR, internal->external for field SWENRSUB
CALL FUNCTION 'CONVERSION_EXIT_SWENR_OUTPUT'
  EXPORTING
    input =                      WA_REIS_IT_OR_CALC_SUBOBJ_L-SWENRSUB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REIS_IT_OR_CALC_SUBOBJ_L-SWENRSUB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SMENR, internal->external for field SMENRSUB
CALL FUNCTION 'CONVERSION_EXIT_SMENR_OUTPUT'
  EXPORTING
    input =                      WA_REIS_IT_OR_CALC_SUBOBJ_L-SMENRSUB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REIS_IT_OR_CALC_SUBOBJ_L-SMENRSUB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RECNNRSUB
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REIS_IT_OR_CALC_SUBOBJ_L-RECNNRSUB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REIS_IT_OR_CALC_SUBOBJ_L-RECNNRSUB.
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_REIS_IT_OR_CALC_SUBOBJ_L_STR, 
SUBOBJNR TYPE STRING,
OBJNRCN TYPE STRING,
SUMMEASSUB TYPE STRING,
SUMNOTOPTSUB TYPE STRING,
SUMOPTSUB TYPE STRING,
OPTRATESUB TYPE STRING,
ISVACANT TYPE STRING,
HASNXTCN TYPE STRING,
OPTRATESUBCHAR TYPE STRING,
OBJTYPESUB TYPE STRING,
OBJECTIDSUB TYPE STRING,
BUKRSSUB TYPE STRING,
SWENRSUB TYPE STRING,
SMENRSUB TYPE STRING,
RECNNRSUB TYPE STRING,
SNUNR TYPE STRING,
XSNUNR TYPE STRING,
XTEXTOBJSUB TYPE STRING,
ICONISOKSUB TYPE STRING,
SORTSEQ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REIS_IT_OR_CALC_SUBOBJ_L_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_REIS_IT_OR_CALC_SUBOBJ_L_STR-SUBOBJNR sy-vline 
WA_REIS_IT_OR_CALC_SUBOBJ_L_STR-OBJNRCN sy-vline 
WA_REIS_IT_OR_CALC_SUBOBJ_L_STR-SUMMEASSUB sy-vline 
WA_REIS_IT_OR_CALC_SUBOBJ_L_STR-SUMNOTOPTSUB sy-vline 
WA_REIS_IT_OR_CALC_SUBOBJ_L_STR-SUMOPTSUB sy-vline 
WA_REIS_IT_OR_CALC_SUBOBJ_L_STR-OPTRATESUB sy-vline 
WA_REIS_IT_OR_CALC_SUBOBJ_L_STR-ISVACANT sy-vline 
WA_REIS_IT_OR_CALC_SUBOBJ_L_STR-HASNXTCN sy-vline 
WA_REIS_IT_OR_CALC_SUBOBJ_L_STR-OPTRATESUBCHAR sy-vline 
WA_REIS_IT_OR_CALC_SUBOBJ_L_STR-OBJTYPESUB sy-vline 
WA_REIS_IT_OR_CALC_SUBOBJ_L_STR-OBJECTIDSUB sy-vline 
WA_REIS_IT_OR_CALC_SUBOBJ_L_STR-BUKRSSUB sy-vline 
WA_REIS_IT_OR_CALC_SUBOBJ_L_STR-SWENRSUB sy-vline 
WA_REIS_IT_OR_CALC_SUBOBJ_L_STR-SMENRSUB sy-vline 
WA_REIS_IT_OR_CALC_SUBOBJ_L_STR-RECNNRSUB sy-vline 
WA_REIS_IT_OR_CALC_SUBOBJ_L_STR-SNUNR sy-vline 
WA_REIS_IT_OR_CALC_SUBOBJ_L_STR-XSNUNR sy-vline 
WA_REIS_IT_OR_CALC_SUBOBJ_L_STR-XTEXTOBJSUB sy-vline 
WA_REIS_IT_OR_CALC_SUBOBJ_L_STR-ICONISOKSUB sy-vline 
WA_REIS_IT_OR_CALC_SUBOBJ_L_STR-SORTSEQ sy-vline      INTO ld_text SEPARATED BY SPACE.

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