ABAP Select data from SAP table ISCACREDITWORTHINESSHISTORY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISCACREDITWORTHINESSHISTORY
*  INTO TABLE @DATA(IT_ISCACREDITWORTHINESSHISTORY2).
*--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_ISCACREDITWORTHINESSHISTORY INDEX 1 INTO DATA(WA_ISCACREDITWORTHINESSHISTORY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISCACREDITWORTHINESSHISTORY>-KEY = 1.
<ISCACREDITWORTHINESSHISTORY>-PARENT_KEY = 1.
<ISCACREDITWORTHINESSHISTORY>-ROOT_KEY = 1.
<ISCACREDITWORTHINESSHISTORY>-BUSINESSPARTNER = 1.
<ISCACREDITWORTHINESSHISTORY>-CALENDARYEAR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISCACREDITWORTHINESSHISTORY-BON01, sy-vline,
  WA_ISCACREDITWORTHINESSHISTORY-BON02, sy-vline,
  WA_ISCACREDITWORTHINESSHISTORY-BON03, sy-vline,
  WA_ISCACREDITWORTHINESSHISTORY-BON04, sy-vline,
  WA_ISCACREDITWORTHINESSHISTORY-BON05, sy-vline,
  WA_ISCACREDITWORTHINESSHISTORY-BON06, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISCACREDITWORTHINESSHISTORY 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_ISCACREDITWORTHINESSHISTORY 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_ISCACREDITWORTHINESSHISTORY INTO WA_ISCACREDITWORTHINESSHISTORY.


*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 BUSINESSPARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISCACREDITWORTHINESSHISTORY-BUSINESSPARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISCACREDITWORTHINESSHISTORY-BUSINESSPARTNER.
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_ISCACREDITWORTHINESSHISTORY_STR, 
KEY TYPE STRING,
PARENT_KEY TYPE STRING,
ROOT_KEY TYPE STRING,
BUSINESSPARTNER TYPE STRING,
CALENDARYEAR TYPE STRING,
BON01 TYPE STRING,
BON02 TYPE STRING,
BON03 TYPE STRING,
BON04 TYPE STRING,
BON05 TYPE STRING,
BON06 TYPE STRING,
BON07 TYPE STRING,
BON08 TYPE STRING,
BON09 TYPE STRING,
BON10 TYPE STRING,
BON11 TYPE STRING,
BON12 TYPE STRING,
BONMA TYPE STRING,
BONVH TYPE STRING,
BMADT TYPE STRING,
LFDNR TYPE STRING,
BONFR TYPE STRING,
BFRDT TYPE STRING,
BRLDT TYPE STRING,
BNEXT TYPE STRING,
BEXDT TYPE STRING,
BCMTF TYPE STRING,
BONTF TYPE STRING,
HASACTIVEENTITY TYPE STRING,
DRAFTENTITYCREATIONDATETIME TYPE STRING,
DRAFTENTITYLASTCHANGEDATETIME TYPE STRING,
DRAFTADMINISTRATIVEDATAUUID TYPE STRING,
DRAFTENTITYCONSISTENCYSTATUS TYPE STRING,
DRAFTENTITYOPERATIONCODE TYPE STRING,
ISACTIVEENTITY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISCACREDITWORTHINESSHISTORY_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_ISCACREDITWORTHINESSHISTORY_STR-KEY sy-vline 
WA_ISCACREDITWORTHINESSHISTORY_STR-PARENT_KEY sy-vline 
WA_ISCACREDITWORTHINESSHISTORY_STR-ROOT_KEY sy-vline 
WA_ISCACREDITWORTHINESSHISTORY_STR-BUSINESSPARTNER sy-vline 
WA_ISCACREDITWORTHINESSHISTORY_STR-CALENDARYEAR sy-vline 
WA_ISCACREDITWORTHINESSHISTORY_STR-BON01 sy-vline 
WA_ISCACREDITWORTHINESSHISTORY_STR-BON02 sy-vline 
WA_ISCACREDITWORTHINESSHISTORY_STR-BON03 sy-vline 
WA_ISCACREDITWORTHINESSHISTORY_STR-BON04 sy-vline 
WA_ISCACREDITWORTHINESSHISTORY_STR-BON05 sy-vline 
WA_ISCACREDITWORTHINESSHISTORY_STR-BON06 sy-vline 
WA_ISCACREDITWORTHINESSHISTORY_STR-BON07 sy-vline 
WA_ISCACREDITWORTHINESSHISTORY_STR-BON08 sy-vline 
WA_ISCACREDITWORTHINESSHISTORY_STR-BON09 sy-vline 
WA_ISCACREDITWORTHINESSHISTORY_STR-BON10 sy-vline 
WA_ISCACREDITWORTHINESSHISTORY_STR-BON11 sy-vline 
WA_ISCACREDITWORTHINESSHISTORY_STR-BON12 sy-vline 
WA_ISCACREDITWORTHINESSHISTORY_STR-BONMA sy-vline 
WA_ISCACREDITWORTHINESSHISTORY_STR-BONVH sy-vline 
WA_ISCACREDITWORTHINESSHISTORY_STR-BMADT sy-vline 
WA_ISCACREDITWORTHINESSHISTORY_STR-LFDNR sy-vline 
WA_ISCACREDITWORTHINESSHISTORY_STR-BONFR sy-vline 
WA_ISCACREDITWORTHINESSHISTORY_STR-BFRDT sy-vline 
WA_ISCACREDITWORTHINESSHISTORY_STR-BRLDT sy-vline 
WA_ISCACREDITWORTHINESSHISTORY_STR-BNEXT sy-vline 
WA_ISCACREDITWORTHINESSHISTORY_STR-BEXDT sy-vline 
WA_ISCACREDITWORTHINESSHISTORY_STR-BCMTF sy-vline 
WA_ISCACREDITWORTHINESSHISTORY_STR-BONTF sy-vline 
WA_ISCACREDITWORTHINESSHISTORY_STR-HASACTIVEENTITY sy-vline 
WA_ISCACREDITWORTHINESSHISTORY_STR-DRAFTENTITYCREATIONDATETIME sy-vline 
WA_ISCACREDITWORTHINESSHISTORY_STR-DRAFTENTITYLASTCHANGEDATETIME sy-vline 
WA_ISCACREDITWORTHINESSHISTORY_STR-DRAFTADMINISTRATIVEDATAUUID sy-vline 
WA_ISCACREDITWORTHINESSHISTORY_STR-DRAFTENTITYCONSISTENCYSTATUS sy-vline 
WA_ISCACREDITWORTHINESSHISTORY_STR-DRAFTENTITYOPERATIONCODE sy-vline 
WA_ISCACREDITWORTHINESSHISTORY_STR-ISACTIVEENTITY sy-vline      INTO ld_text SEPARATED BY SPACE.

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