ABAP Select data from SAP table CCARD_LIFK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CCARD_LIFK
*  INTO TABLE @DATA(IT_CCARD_LIFK2).
*--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_CCARD_LIFK INDEX 1 INTO DATA(WA_CCARD_LIFK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CCARD_LIFK>-CCINS = 1.
<CCARD_LIFK>-CCNUM = 1.
<CCARD_LIFK>-DATBI = 1.
<CCARD_LIFK>-FAKWR = 1.
<CCARD_LIFK>-WAERS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CCARD_LIFK-VBELN, sy-vline,
  WA_CCARD_LIFK-FKART_T, sy-vline,
  WA_CCARD_LIFK-AUTWR, sy-vline,
  WA_CCARD_LIFK-CCWAE, sy-vline,
  WA_CCARD_LIFK-AUNUM, sy-vline,
  WA_CCARD_LIFK-AUTRA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CCARD_LIFK 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_CCARD_LIFK 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_CCARD_LIFK INTO WA_CCARD_LIFK.


*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 VBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CCARD_LIFK-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CCARD_LIFK-VBELN.
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_CCARD_LIFK_STR, 
CCINS TYPE STRING,
CCNUM TYPE STRING,
DATBI TYPE STRING,
FAKWR TYPE STRING,
WAERS TYPE STRING,
VBELN TYPE STRING,
FKART_T TYPE STRING,
AUTWR TYPE STRING,
CCWAE TYPE STRING,
AUNUM TYPE STRING,
AUTRA TYPE STRING,
AUDAT TYPE STRING,
AUTIM TYPE STRING,
CVVAL TYPE STRING,
CVVCT TYPE STRING,
CVVST TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CCARD_LIFK_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_CCARD_LIFK_STR-CCINS sy-vline 
WA_CCARD_LIFK_STR-CCNUM sy-vline 
WA_CCARD_LIFK_STR-DATBI sy-vline 
WA_CCARD_LIFK_STR-FAKWR sy-vline 
WA_CCARD_LIFK_STR-WAERS sy-vline 
WA_CCARD_LIFK_STR-VBELN sy-vline 
WA_CCARD_LIFK_STR-FKART_T sy-vline 
WA_CCARD_LIFK_STR-AUTWR sy-vline 
WA_CCARD_LIFK_STR-CCWAE sy-vline 
WA_CCARD_LIFK_STR-AUNUM sy-vline 
WA_CCARD_LIFK_STR-AUTRA sy-vline 
WA_CCARD_LIFK_STR-AUDAT sy-vline 
WA_CCARD_LIFK_STR-AUTIM sy-vline 
WA_CCARD_LIFK_STR-CVVAL sy-vline 
WA_CCARD_LIFK_STR-CVVCT sy-vline 
WA_CCARD_LIFK_STR-CVVST sy-vline      INTO ld_text SEPARATED BY SPACE.

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