ABAP Select data from SAP table CDIKYR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CDIKYR
*  INTO TABLE @DATA(IT_CDIKYR2).
*--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_CDIKYR INDEX 1 INTO DATA(WA_CDIKYR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CDIKYR>-KYRNM = 1.
<CDIKYR>-ROLNM = 1.
<CDIKYR>-DIGIT = 1.
<CDIKYR>-OUTLN = 1.
<CDIKYR>-DECIM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CDIKYR-SBGRP, sy-vline,
  WA_CDIKYR-AGGDI, sy-vline,
  WA_CDIKYR-AGGTM, sy-vline,
  WA_CDIKYR-AGGFI, sy-vline,
  WA_CDIKYR-OPORD, sy-vline,
  WA_CDIKYR-PRDEC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CDIKYR 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_CDIKYR 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_CDIKYR INTO WA_CDIKYR.


*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_CDIKYR_STR, 
KYRNM TYPE STRING,
ROLNM TYPE STRING,
DIGIT TYPE STRING,
OUTLN TYPE STRING,
DECIM TYPE STRING,
SBGRP TYPE STRING,
AGGDI TYPE STRING,
AGGTM TYPE STRING,
AGGFI TYPE STRING,
OPORD TYPE STRING,
PRDEC TYPE STRING,
PRSNT TYPE STRING,
CCNUM TYPE STRING,
DCURR TYPE STRING,
TFLAG TYPE STRING,
TXT_M TYPE STRING,
TXT_S TYPE STRING,
CHNAM TYPE STRING,
CHDAT TYPE STRING,
CHTIM TYPE STRING,
RCSIN TYPE STRING,
RSLIN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CDIKYR_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_CDIKYR_STR-KYRNM sy-vline 
WA_CDIKYR_STR-ROLNM sy-vline 
WA_CDIKYR_STR-DIGIT sy-vline 
WA_CDIKYR_STR-OUTLN sy-vline 
WA_CDIKYR_STR-DECIM sy-vline 
WA_CDIKYR_STR-SBGRP sy-vline 
WA_CDIKYR_STR-AGGDI sy-vline 
WA_CDIKYR_STR-AGGTM sy-vline 
WA_CDIKYR_STR-AGGFI sy-vline 
WA_CDIKYR_STR-OPORD sy-vline 
WA_CDIKYR_STR-PRDEC sy-vline 
WA_CDIKYR_STR-PRSNT sy-vline 
WA_CDIKYR_STR-CCNUM sy-vline 
WA_CDIKYR_STR-DCURR sy-vline 
WA_CDIKYR_STR-TFLAG sy-vline 
WA_CDIKYR_STR-TXT_M sy-vline 
WA_CDIKYR_STR-TXT_S sy-vline 
WA_CDIKYR_STR-CHNAM sy-vline 
WA_CDIKYR_STR-CHDAT sy-vline 
WA_CDIKYR_STR-CHTIM sy-vline 
WA_CDIKYR_STR-RCSIN sy-vline 
WA_CDIKYR_STR-RSLIN sy-vline      INTO ld_text SEPARATED BY SPACE.

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