ABAP Select data from SAP table ROIG_CDREDADD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ROIG_CDREDADD
*  INTO TABLE @DATA(IT_ROIG_CDREDADD2).
*--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_ROIG_CDREDADD INDEX 1 INTO DATA(WA_ROIG_CDREDADD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ROIG_CDREDADD>-OBJECTCLAS = 1.
<ROIG_CDREDADD>-OBJECTID = 1.
<ROIG_CDREDADD>-CHANGENR = 1.
<ROIG_CDREDADD>-OBJECTTXT = 1.
<ROIG_CDREDADD>-USERNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ROIG_CDREDADD-UDATE, sy-vline,
  WA_ROIG_CDREDADD-UTIME, sy-vline,
  WA_ROIG_CDREDADD-TCODE, sy-vline,
  WA_ROIG_CDREDADD-APPLNAME, sy-vline,
  WA_ROIG_CDREDADD-APPLTYPE, sy-vline,
  WA_ROIG_CDREDADD-TABNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ROIG_CDREDADD 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_ROIG_CDREDADD 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_ROIG_CDREDADD INTO WA_ROIG_CDREDADD.


*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 OBJECTCLAS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ROIG_CDREDADD-OBJECTCLAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIG_CDREDADD-OBJECTCLAS.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ISOLA, internal->external for field SPRACHE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_ROIG_CDREDADD-SPRACHE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIG_CDREDADD-SPRACHE.
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_ROIG_CDREDADD_STR, 
OBJECTCLAS TYPE STRING,
OBJECTID TYPE STRING,
CHANGENR TYPE STRING,
OBJECTTXT TYPE STRING,
USERNAME TYPE STRING,
UDATE TYPE STRING,
UTIME TYPE STRING,
TCODE TYPE STRING,
APPLNAME TYPE STRING,
APPLTYPE TYPE STRING,
TABNAME TYPE STRING,
TABKEY TYPE STRING,
KEYLEN TYPE STRING,
CHNGIND TYPE STRING,
FNAME TYPE STRING,
FTEXT TYPE STRING,
TEXTART TYPE STRING,
SPRACHE TYPE STRING,
TEXT_CASE TYPE STRING,
OUTLEN TYPE STRING,
F_OLD TYPE STRING,
F_NEW TYPE STRING,
KEYGUID TYPE STRING,
TABKEY254 TYPE STRING,
EXT_KEYLEN TYPE STRING,
KEYGUID_STR TYPE STRING,
VERSION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ROIG_CDREDADD_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_ROIG_CDREDADD_STR-OBJECTCLAS sy-vline 
WA_ROIG_CDREDADD_STR-OBJECTID sy-vline 
WA_ROIG_CDREDADD_STR-CHANGENR sy-vline 
WA_ROIG_CDREDADD_STR-OBJECTTXT sy-vline 
WA_ROIG_CDREDADD_STR-USERNAME sy-vline 
WA_ROIG_CDREDADD_STR-UDATE sy-vline 
WA_ROIG_CDREDADD_STR-UTIME sy-vline 
WA_ROIG_CDREDADD_STR-TCODE sy-vline 
WA_ROIG_CDREDADD_STR-APPLNAME sy-vline 
WA_ROIG_CDREDADD_STR-APPLTYPE sy-vline 
WA_ROIG_CDREDADD_STR-TABNAME sy-vline 
WA_ROIG_CDREDADD_STR-TABKEY sy-vline 
WA_ROIG_CDREDADD_STR-KEYLEN sy-vline 
WA_ROIG_CDREDADD_STR-CHNGIND sy-vline 
WA_ROIG_CDREDADD_STR-FNAME sy-vline 
WA_ROIG_CDREDADD_STR-FTEXT sy-vline 
WA_ROIG_CDREDADD_STR-TEXTART sy-vline 
WA_ROIG_CDREDADD_STR-SPRACHE sy-vline 
WA_ROIG_CDREDADD_STR-TEXT_CASE sy-vline 
WA_ROIG_CDREDADD_STR-OUTLEN sy-vline 
WA_ROIG_CDREDADD_STR-F_OLD sy-vline 
WA_ROIG_CDREDADD_STR-F_NEW sy-vline 
WA_ROIG_CDREDADD_STR-KEYGUID sy-vline 
WA_ROIG_CDREDADD_STR-TABKEY254 sy-vline 
WA_ROIG_CDREDADD_STR-EXT_KEYLEN sy-vline 
WA_ROIG_CDREDADD_STR-KEYGUID_STR sy-vline 
WA_ROIG_CDREDADD_STR-VERSION sy-vline      INTO ld_text SEPARATED BY SPACE.

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