ABAP Select data from SAP table RESCSCNRO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RESCSCNRO
*  INTO TABLE @DATA(IT_RESCSCNRO2).
*--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_RESCSCNRO INDEX 1 INTO DATA(WA_RESCSCNRO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RESCSCNRO>-MANDT = 1.
<RESCSCNRO>-SCS_PERIOD_GUID = 1.
<RESCSCNRO>-SETTL_GUID = 1.
<RESCSCNRO>-CN_OBJNR = 1.
<RESCSCNRO>-RO_OBJNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RESCSCNRO-PTO, sy-vline,
  WA_RESCSCNRO-PFROM, sy-vline,
  WA_RESCSCNRO-PARTNER, sy-vline,
  WA_RESCSCNRO-PARTNEROBJNR, sy-vline,
  WA_RESCSCNRO-OBJSUMMARY, sy-vline,
  WA_RESCSCNRO-PERIODREFGUID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RESCSCNRO 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_RESCSCNRO 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_RESCSCNRO INTO WA_RESCSCNRO.


*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 REDAT, internal->external for field PTO
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_RESCSCNRO-PTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RESCSCNRO-PTO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RESCSCNRO-PARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RESCSCNRO-PARTNER.
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_RESCSCNRO_STR, 
MANDT TYPE STRING,
SCS_PERIOD_GUID TYPE STRING,
SETTL_GUID TYPE STRING,
CN_OBJNR TYPE STRING,
RO_OBJNR TYPE STRING,
PTO TYPE STRING,
PFROM TYPE STRING,
PARTNER TYPE STRING,
PARTNEROBJNR TYPE STRING,
OBJSUMMARY TYPE STRING,
PERIODREFGUID TYPE STRING,
PLENGTH TYPE STRING,
RO_OBJINFO TYPE STRING,
RO_OBJID TYPE STRING,
CN_OBJINFO TYPE STRING,
CN_OBJID TYPE STRING,
XNAME TYPE STRING,
XPARTNER TYPE STRING,
FIRSTNAME TYPE STRING,
LASTNAME TYPE STRING,
FULLNAME TYPE STRING,
ROLE TYPE STRING,
XROLE TYPE STRING,
STREET TYPE STRING,
HOUSENR TYPE STRING,
CITY TYPE STRING,
POST_CODE TYPE STRING,
REGION TYPE STRING,
COUNTRY TYPE STRING,
PROCESSID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RESCSCNRO_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_RESCSCNRO_STR-MANDT sy-vline 
WA_RESCSCNRO_STR-SCS_PERIOD_GUID sy-vline 
WA_RESCSCNRO_STR-SETTL_GUID sy-vline 
WA_RESCSCNRO_STR-CN_OBJNR sy-vline 
WA_RESCSCNRO_STR-RO_OBJNR sy-vline 
WA_RESCSCNRO_STR-PTO sy-vline 
WA_RESCSCNRO_STR-PFROM sy-vline 
WA_RESCSCNRO_STR-PARTNER sy-vline 
WA_RESCSCNRO_STR-PARTNEROBJNR sy-vline 
WA_RESCSCNRO_STR-OBJSUMMARY sy-vline 
WA_RESCSCNRO_STR-PERIODREFGUID sy-vline 
WA_RESCSCNRO_STR-PLENGTH sy-vline 
WA_RESCSCNRO_STR-RO_OBJINFO sy-vline 
WA_RESCSCNRO_STR-RO_OBJID sy-vline 
WA_RESCSCNRO_STR-CN_OBJINFO sy-vline 
WA_RESCSCNRO_STR-CN_OBJID sy-vline 
WA_RESCSCNRO_STR-XNAME sy-vline 
WA_RESCSCNRO_STR-XPARTNER sy-vline 
WA_RESCSCNRO_STR-FIRSTNAME sy-vline 
WA_RESCSCNRO_STR-LASTNAME sy-vline 
WA_RESCSCNRO_STR-FULLNAME sy-vline 
WA_RESCSCNRO_STR-ROLE sy-vline 
WA_RESCSCNRO_STR-XROLE sy-vline 
WA_RESCSCNRO_STR-STREET sy-vline 
WA_RESCSCNRO_STR-HOUSENR sy-vline 
WA_RESCSCNRO_STR-CITY sy-vline 
WA_RESCSCNRO_STR-POST_CODE sy-vline 
WA_RESCSCNRO_STR-REGION sy-vline 
WA_RESCSCNRO_STR-COUNTRY sy-vline 
WA_RESCSCNRO_STR-PROCESSID sy-vline      INTO ld_text SEPARATED BY SPACE.

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