ABAP Select data from SAP table REIS_IT_OR_CALC_OBJ_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_OBJ_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_OBJ_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_OBJ_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_OBJ_L TYPE STANDARD TABLE OF REIS_IT_OR_CALC_OBJ_L,
      WA_REIS_IT_OR_CALC_OBJ_L TYPE REIS_IT_OR_CALC_OBJ_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_OBJ_L> TYPE REIS_IT_OR_CALC_OBJ_L.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REIS_IT_OR_CALC_OBJ_L
*  INTO TABLE @DATA(IT_REIS_IT_OR_CALC_OBJ_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_OBJ_L INDEX 1 INTO DATA(WA_REIS_IT_OR_CALC_OBJ_L2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REIS_IT_OR_CALC_OBJ_L>-SUMMEAS = 1.
<REIS_IT_OR_CALC_OBJ_L>-SUMNOTOPT = 1.
<REIS_IT_OR_CALC_OBJ_L>-SUMOPT = 1.
<REIS_IT_OR_CALC_OBJ_L>-OBJTYPE = 1.
<REIS_IT_OR_CALC_OBJ_L>-OBJECTID = 1.

ENDLOOP.

LOOP AT IT_REIS_IT_OR_CALC_OBJ_L INTO WA_REIS_IT_OR_CALC_OBJ_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_OBJ_L-BUKRS, sy-vline,
  WA_REIS_IT_OR_CALC_OBJ_L-SWENR, sy-vline,
  WA_REIS_IT_OR_CALC_OBJ_L-SGRNR, sy-vline,
  WA_REIS_IT_OR_CALC_OBJ_L-SGENR, sy-vline,
  WA_REIS_IT_OR_CALC_OBJ_L-SMENR, sy-vline,
  WA_REIS_IT_OR_CALC_OBJ_L-RECNNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REIS_IT_OR_CALC_OBJ_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_OBJ_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_OBJ_L INTO WA_REIS_IT_OR_CALC_OBJ_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 SWENR
CALL FUNCTION 'CONVERSION_EXIT_SWENR_OUTPUT'
  EXPORTING
    input =                      WA_REIS_IT_OR_CALC_OBJ_L-SWENR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REIS_IT_OR_CALC_OBJ_L-SWENR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SGRNR, internal->external for field SGRNR
CALL FUNCTION 'CONVERSION_EXIT_SGRNR_OUTPUT'
  EXPORTING
    input =                      WA_REIS_IT_OR_CALC_OBJ_L-SGRNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REIS_IT_OR_CALC_OBJ_L-SGRNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SGENR, internal->external for field SGENR
CALL FUNCTION 'CONVERSION_EXIT_SGENR_OUTPUT'
  EXPORTING
    input =                      WA_REIS_IT_OR_CALC_OBJ_L-SGENR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REIS_IT_OR_CALC_OBJ_L-SGENR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ALPHA, internal->external for field SEMPSL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REIS_IT_OR_CALC_OBJ_L-SEMPSL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REIS_IT_OR_CALC_OBJ_L-SEMPSL.
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_OBJ_L_STR, 
SUMMEAS TYPE STRING,
SUMNOTOPT TYPE STRING,
SUMOPT TYPE STRING,
OBJTYPE TYPE STRING,
OBJECTID TYPE STRING,
BUKRS TYPE STRING,
SWENR TYPE STRING,
SGRNR TYPE STRING,
SGENR TYPE STRING,
SMENR TYPE STRING,
RECNNR TYPE STRING,
SNKSL TYPE STRING,
SEMPSL TYPE STRING,
XTEXTOBJ TYPE STRING,
ICONISOK TYPE STRING,
ICONHASSUBOBJ TYPE STRING,
XOPTMETH TYPE STRING,
XMMEAS TYPE STRING,
OPTRATECALCCHAR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REIS_IT_OR_CALC_OBJ_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_OBJ_L_STR-SUMMEAS sy-vline 
WA_REIS_IT_OR_CALC_OBJ_L_STR-SUMNOTOPT sy-vline 
WA_REIS_IT_OR_CALC_OBJ_L_STR-SUMOPT sy-vline 
WA_REIS_IT_OR_CALC_OBJ_L_STR-OBJTYPE sy-vline 
WA_REIS_IT_OR_CALC_OBJ_L_STR-OBJECTID sy-vline 
WA_REIS_IT_OR_CALC_OBJ_L_STR-BUKRS sy-vline 
WA_REIS_IT_OR_CALC_OBJ_L_STR-SWENR sy-vline 
WA_REIS_IT_OR_CALC_OBJ_L_STR-SGRNR sy-vline 
WA_REIS_IT_OR_CALC_OBJ_L_STR-SGENR sy-vline 
WA_REIS_IT_OR_CALC_OBJ_L_STR-SMENR sy-vline 
WA_REIS_IT_OR_CALC_OBJ_L_STR-RECNNR sy-vline 
WA_REIS_IT_OR_CALC_OBJ_L_STR-SNKSL sy-vline 
WA_REIS_IT_OR_CALC_OBJ_L_STR-SEMPSL sy-vline 
WA_REIS_IT_OR_CALC_OBJ_L_STR-XTEXTOBJ sy-vline 
WA_REIS_IT_OR_CALC_OBJ_L_STR-ICONISOK sy-vline 
WA_REIS_IT_OR_CALC_OBJ_L_STR-ICONHASSUBOBJ sy-vline 
WA_REIS_IT_OR_CALC_OBJ_L_STR-XOPTMETH sy-vline 
WA_REIS_IT_OR_CALC_OBJ_L_STR-XMMEAS sy-vline 
WA_REIS_IT_OR_CALC_OBJ_L_STR-OPTRATECALCCHAR sy-vline      INTO ld_text SEPARATED BY SPACE.

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