ABAP Select data from SAP table RNWOINC_FIELDS_X into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNWOINC_FIELDS_X
*  INTO TABLE @DATA(IT_RNWOINC_FIELDS_X2).
*--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_RNWOINC_FIELDS_X INDEX 1 INTO DATA(WA_RNWOINC_FIELDS_X2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RNWOINC_FIELDS_X>-WORK_ACC_X = 1.
<RNWOINC_FIELDS_X>-OTHER_ACC_X = 1.
<RNWOINC_FIELDS_X>-D_ARZT_X = 1.
<RNWOINC_FIELDS_X>-WOINC_TYPE_X = 1.
<RNWOINC_FIELDS_X>-CARE_NECC_X = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNWOINC_FIELDS_X-ESREGSEG_X, sy-vline,
  WA_RNWOINC_FIELDS_X-ESSITPAC_X, sy-vline,
  WA_RNWOINC_FIELDS_X-ESTRAMED_X, sy-vline,
  WA_RNWOINC_FIELDS_X-ESPRUDIA_X, sy-vline,
  WA_RNWOINC_FIELDS_X-ESDURPRE_X, sy-vline,
  WA_RNWOINC_FIELDS_X-ESDOLPAD_X, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNWOINC_FIELDS_X 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_RNWOINC_FIELDS_X 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_RNWOINC_FIELDS_X INTO WA_RNWOINC_FIELDS_X.


*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.
ENDFORM. 

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

TYPES: BEGIN OF T_RNWOINC_FIELDS_X_STR, 
WORK_ACC_X TYPE STRING,
OTHER_ACC_X TYPE STRING,
D_ARZT_X TYPE STRING,
WOINC_TYPE_X TYPE STRING,
CARE_NECC_X TYPE STRING,
ESREGSEG_X TYPE STRING,
ESSITPAC_X TYPE STRING,
ESTRAMED_X TYPE STRING,
ESPRUDIA_X TYPE STRING,
ESDURPRE_X TYPE STRING,
ESDOLPAD_X TYPE STRING,
ESCURSEI_X TYPE STRING,
ESPARCON_X TYPE STRING,
ESCAUALT_X TYPE STRING,
ESFECFIN_X TYPE STRING,
ESPARMUT_X TYPE STRING,
ESJUSPRO_X TYPE STRING,
ESRAZDES_X TYPE STRING,
ESULTPAR_X TYPE STRING,
ESDIAMED_X TYPE STRING,
ESTRAPOS_X TYPE STRING,
ESFECCUR_X TYPE STRING,
ESLESRES_X TYPE STRING,
ESAGOREH_X TYPE STRING,
ESALTMED_X TYPE STRING,
ESFECALT_X TYPE STRING,
ESRESEXP_X TYPE STRING,
ESMOTCAM_X TYPE STRING,
ESEXPMOT_X TYPE STRING,
ESEMPCAU_X TYPE STRING,
ESMODENT_X TYPE STRING,
ESPRORRO_X TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RNWOINC_FIELDS_X_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_RNWOINC_FIELDS_X_STR-WORK_ACC_X sy-vline 
WA_RNWOINC_FIELDS_X_STR-OTHER_ACC_X sy-vline 
WA_RNWOINC_FIELDS_X_STR-D_ARZT_X sy-vline 
WA_RNWOINC_FIELDS_X_STR-WOINC_TYPE_X sy-vline 
WA_RNWOINC_FIELDS_X_STR-CARE_NECC_X sy-vline 
WA_RNWOINC_FIELDS_X_STR-ESREGSEG_X sy-vline 
WA_RNWOINC_FIELDS_X_STR-ESSITPAC_X sy-vline 
WA_RNWOINC_FIELDS_X_STR-ESTRAMED_X sy-vline 
WA_RNWOINC_FIELDS_X_STR-ESPRUDIA_X sy-vline 
WA_RNWOINC_FIELDS_X_STR-ESDURPRE_X sy-vline 
WA_RNWOINC_FIELDS_X_STR-ESDOLPAD_X sy-vline 
WA_RNWOINC_FIELDS_X_STR-ESCURSEI_X sy-vline 
WA_RNWOINC_FIELDS_X_STR-ESPARCON_X sy-vline 
WA_RNWOINC_FIELDS_X_STR-ESCAUALT_X sy-vline 
WA_RNWOINC_FIELDS_X_STR-ESFECFIN_X sy-vline 
WA_RNWOINC_FIELDS_X_STR-ESPARMUT_X sy-vline 
WA_RNWOINC_FIELDS_X_STR-ESJUSPRO_X sy-vline 
WA_RNWOINC_FIELDS_X_STR-ESRAZDES_X sy-vline 
WA_RNWOINC_FIELDS_X_STR-ESULTPAR_X sy-vline 
WA_RNWOINC_FIELDS_X_STR-ESDIAMED_X sy-vline 
WA_RNWOINC_FIELDS_X_STR-ESTRAPOS_X sy-vline 
WA_RNWOINC_FIELDS_X_STR-ESFECCUR_X sy-vline 
WA_RNWOINC_FIELDS_X_STR-ESLESRES_X sy-vline 
WA_RNWOINC_FIELDS_X_STR-ESAGOREH_X sy-vline 
WA_RNWOINC_FIELDS_X_STR-ESALTMED_X sy-vline 
WA_RNWOINC_FIELDS_X_STR-ESFECALT_X sy-vline 
WA_RNWOINC_FIELDS_X_STR-ESRESEXP_X sy-vline 
WA_RNWOINC_FIELDS_X_STR-ESMOTCAM_X sy-vline 
WA_RNWOINC_FIELDS_X_STR-ESEXPMOT_X sy-vline 
WA_RNWOINC_FIELDS_X_STR-ESEMPCAU_X sy-vline 
WA_RNWOINC_FIELDS_X_STR-ESMODENT_X sy-vline 
WA_RNWOINC_FIELDS_X_STR-ESPRORRO_X sy-vline      INTO ld_text SEPARATED BY SPACE.

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