ABAP Select data from SAP table CRAPOX into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CRAPOX
*  INTO TABLE @DATA(IT_CRAPOX2).
*--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_CRAPOX INDEX 1 INTO DATA(WA_CRAPOX2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CRAPOX>-LOGSYS = 1.
<CRAPOX>-R3ARBID = 1.
<CRAPOX>-R3KAPID = 1.
<CRAPOX>-UNIT = 1.
<CRAPOX>-NAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CRAPOX-PLANT, sy-vline,
  WA_CRAPOX-CALENDAR, sy-vline,
  WA_CRAPOX-BEGTI, sy-vline,
  WA_CRAPOX-ENDTI, sy-vline,
  WA_CRAPOX-BREAKTIME, sy-vline,
  WA_CRAPOX-NOINDIVRES, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CRAPOX 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_CRAPOX 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_CRAPOX INTO WA_CRAPOX.


*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_CRAPOX_STR, 
LOGSYS TYPE STRING,
R3ARBID TYPE STRING,
R3KAPID TYPE STRING,
UNIT TYPE STRING,
NAME TYPE STRING,
PLANT TYPE STRING,
CALENDAR TYPE STRING,
BEGTI TYPE STRING,
ENDTI TYPE STRING,
BREAKTIME TYPE STRING,
NOINDIVRES TYPE STRING,
UTILIZATIO TYPE STRING,
VERSION_AC TYPE STRING,
LVIND TYPE STRING,
MULTIIND TYPE STRING,
OVERLOAD TYPE STRING,
RESTYPE TYPE STRING,
R3REFID TYPE STRING,
R3REFARBID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CRAPOX_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_CRAPOX_STR-LOGSYS sy-vline 
WA_CRAPOX_STR-R3ARBID sy-vline 
WA_CRAPOX_STR-R3KAPID sy-vline 
WA_CRAPOX_STR-UNIT sy-vline 
WA_CRAPOX_STR-NAME sy-vline 
WA_CRAPOX_STR-PLANT sy-vline 
WA_CRAPOX_STR-CALENDAR sy-vline 
WA_CRAPOX_STR-BEGTI sy-vline 
WA_CRAPOX_STR-ENDTI sy-vline 
WA_CRAPOX_STR-BREAKTIME sy-vline 
WA_CRAPOX_STR-NOINDIVRES sy-vline 
WA_CRAPOX_STR-UTILIZATIO sy-vline 
WA_CRAPOX_STR-VERSION_AC sy-vline 
WA_CRAPOX_STR-LVIND sy-vline 
WA_CRAPOX_STR-MULTIIND sy-vline 
WA_CRAPOX_STR-OVERLOAD sy-vline 
WA_CRAPOX_STR-RESTYPE sy-vline 
WA_CRAPOX_STR-R3REFID sy-vline 
WA_CRAPOX_STR-R3REFARBID sy-vline      INTO ld_text SEPARATED BY SPACE.

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