ABAP Select data from SAP table CYKAPABEL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CYKAPABEL
*  INTO TABLE @DATA(IT_CYKAPABEL2).
*--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_CYKAPABEL INDEX 1 INTO DATA(WA_CYKAPABEL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CYKAPABEL>-KAPID = 1.
<CYKAPABEL>-DATEBEG = 1.
<CYKAPABEL>-TIMEBEG = 1.
<CYKAPABEL>-KEY1 = 1.
<CYKAPABEL>-KEY2 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CYKAPABEL-KEY3, sy-vline,
  WA_CYKAPABEL-INDEX, sy-vline,
  WA_CYKAPABEL-FLGKBED, sy-vline,
  WA_CYKAPABEL-AMOUNT, sy-vline,
  WA_CYKAPABEL-DATEEND, sy-vline,
  WA_CYKAPABEL-TIMEEND, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CYKAPABEL 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_CYKAPABEL 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_CYKAPABEL INTO WA_CYKAPABEL.


*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_CYKAPABEL_STR, 
KAPID TYPE STRING,
DATEBEG TYPE STRING,
TIMEBEG TYPE STRING,
KEY1 TYPE STRING,
KEY2 TYPE STRING,
KEY3 TYPE STRING,
INDEX TYPE STRING,
FLGKBED TYPE STRING,
AMOUNT TYPE STRING,
DATEEND TYPE STRING,
TIMEEND TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CYKAPABEL_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_CYKAPABEL_STR-KAPID sy-vline 
WA_CYKAPABEL_STR-DATEBEG sy-vline 
WA_CYKAPABEL_STR-TIMEBEG sy-vline 
WA_CYKAPABEL_STR-KEY1 sy-vline 
WA_CYKAPABEL_STR-KEY2 sy-vline 
WA_CYKAPABEL_STR-KEY3 sy-vline 
WA_CYKAPABEL_STR-INDEX sy-vline 
WA_CYKAPABEL_STR-FLGKBED sy-vline 
WA_CYKAPABEL_STR-AMOUNT sy-vline 
WA_CYKAPABEL_STR-DATEEND sy-vline 
WA_CYKAPABEL_STR-TIMEEND sy-vline      INTO ld_text SEPARATED BY SPACE.

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