ABAP Select data from SAP table CKAPP03PERS_WAO into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CKAPP03PERS_WAO 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 CKAPP03PERS_WAO. 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 CKAPP03PERS_WAO 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_CKAPP03PERS_WAO TYPE STANDARD TABLE OF CKAPP03PERS_WAO,
      WA_CKAPP03PERS_WAO TYPE CKAPP03PERS_WAO,
      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: <CKAPP03PERS_WAO> TYPE CKAPP03PERS_WAO.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CKAPP03PERS_WAO.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CKAPP03PERS_WAO
  INTO TABLE IT_CKAPP03PERS_WAO.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CKAPP03PERS_WAO
*  INTO TABLE @DATA(IT_CKAPP03PERS_WAO2).
*--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_CKAPP03PERS_WAO INDEX 1 INTO DATA(WA_CKAPP03PERS_WAO2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CKAPP03PERS_WAO ASSIGNING <CKAPP03PERS_WAO>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CKAPP03PERS_WAO>-BNAME = 1.
<CKAPP03PERS_WAO>-ACTVT = 1.
<CKAPP03PERS_WAO>-MARKED = 1.
<CKAPP03PERS_WAO>-CHANGED = 1.
<CKAPP03PERS_WAO>-DELETED = 1.

ENDLOOP.

LOOP AT IT_CKAPP03PERS_WAO INTO WA_CKAPP03PERS_WAO.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CKAPP03PERS_WAO-VBELN, sy-vline,
  WA_CKAPP03PERS_WAO-VBELN_TO, sy-vline,
  WA_CKAPP03PERS_WAO-MATNR, sy-vline,
  WA_CKAPP03PERS_WAO-MATNR_TO, sy-vline,
  WA_CKAPP03PERS_WAO-WERKS, sy-vline,
  WA_CKAPP03PERS_WAO-WERKS_TO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CKAPP03PERS_WAO 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_CKAPP03PERS_WAO 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_CKAPP03PERS_WAO INTO WA_CKAPP03PERS_WAO.


*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_CKAPP03PERS_WAO-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKAPP03PERS_WAO-VBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VBELN_TO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CKAPP03PERS_WAO-VBELN_TO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKAPP03PERS_WAO-VBELN_TO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_CKAPP03PERS_WAO-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKAPP03PERS_WAO-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR_TO
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_CKAPP03PERS_WAO-MATNR_TO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKAPP03PERS_WAO-MATNR_TO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AUART, internal->external for field AUART
CALL FUNCTION 'CONVERSION_EXIT_AUART_OUTPUT'
  EXPORTING
    input =                      WA_CKAPP03PERS_WAO-AUART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKAPP03PERS_WAO-AUART.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AUART, internal->external for field AUART_TO
CALL FUNCTION 'CONVERSION_EXIT_AUART_OUTPUT'
  EXPORTING
    input =                      WA_CKAPP03PERS_WAO-AUART_TO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKAPP03PERS_WAO-AUART_TO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CKAPP03PERS_WAO-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKAPP03PERS_WAO-KUNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNNR_TO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CKAPP03PERS_WAO-KUNNR_TO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKAPP03PERS_WAO-KUNNR_TO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRCTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CKAPP03PERS_WAO-PRCTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKAPP03PERS_WAO-PRCTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRCTR_TO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CKAPP03PERS_WAO-PRCTR_TO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKAPP03PERS_WAO-PRCTR_TO.
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_CKAPP03PERS_WAO_STR, 
BNAME TYPE STRING,
ACTVT TYPE STRING,
MARKED TYPE STRING,
CHANGED TYPE STRING,
DELETED TYPE STRING,
VBELN TYPE STRING,
VBELN_TO TYPE STRING,
MATNR TYPE STRING,
MATNR_TO TYPE STRING,
WERKS TYPE STRING,
WERKS_TO TYPE STRING,
AUART TYPE STRING,
AUART_TO TYPE STRING,
KUNNR TYPE STRING,
KUNNR_TO TYPE STRING,
ERNAM TYPE STRING,
ERNAM_TO TYPE STRING,
ERDAT TYPE STRING,
ERDAT_TO TYPE STRING,
GSBER TYPE STRING,
MAXSEL TYPE STRING,
GSBER_TO TYPE STRING,
VKORG TYPE STRING,
VKORG_TO TYPE STRING,
VTWEG TYPE STRING,
VTWEG_TO TYPE STRING,
SPART TYPE STRING,
SPART_TO TYPE STRING,
VKGRP TYPE STRING,
VKGRP_TO TYPE STRING,
VKBUR TYPE STRING,
VKBUR_TO TYPE STRING,
PRCTR TYPE STRING,
PRCTR_TO TYPE STRING,
KALVAR TYPE STRING,
KALVAR_TO TYPE STRING,
ZSCHL_K TYPE STRING,
ZSCHL_K_TO TYPE STRING,
KALSM_K TYPE STRING,
KALSM_K_TO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CKAPP03PERS_WAO_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_CKAPP03PERS_WAO_STR-BNAME sy-vline 
WA_CKAPP03PERS_WAO_STR-ACTVT sy-vline 
WA_CKAPP03PERS_WAO_STR-MARKED sy-vline 
WA_CKAPP03PERS_WAO_STR-CHANGED sy-vline 
WA_CKAPP03PERS_WAO_STR-DELETED sy-vline 
WA_CKAPP03PERS_WAO_STR-VBELN sy-vline 
WA_CKAPP03PERS_WAO_STR-VBELN_TO sy-vline 
WA_CKAPP03PERS_WAO_STR-MATNR sy-vline 
WA_CKAPP03PERS_WAO_STR-MATNR_TO sy-vline 
WA_CKAPP03PERS_WAO_STR-WERKS sy-vline 
WA_CKAPP03PERS_WAO_STR-WERKS_TO sy-vline 
WA_CKAPP03PERS_WAO_STR-AUART sy-vline 
WA_CKAPP03PERS_WAO_STR-AUART_TO sy-vline 
WA_CKAPP03PERS_WAO_STR-KUNNR sy-vline 
WA_CKAPP03PERS_WAO_STR-KUNNR_TO sy-vline 
WA_CKAPP03PERS_WAO_STR-ERNAM sy-vline 
WA_CKAPP03PERS_WAO_STR-ERNAM_TO sy-vline 
WA_CKAPP03PERS_WAO_STR-ERDAT sy-vline 
WA_CKAPP03PERS_WAO_STR-ERDAT_TO sy-vline 
WA_CKAPP03PERS_WAO_STR-GSBER sy-vline 
WA_CKAPP03PERS_WAO_STR-MAXSEL sy-vline 
WA_CKAPP03PERS_WAO_STR-GSBER_TO sy-vline 
WA_CKAPP03PERS_WAO_STR-VKORG sy-vline 
WA_CKAPP03PERS_WAO_STR-VKORG_TO sy-vline 
WA_CKAPP03PERS_WAO_STR-VTWEG sy-vline 
WA_CKAPP03PERS_WAO_STR-VTWEG_TO sy-vline 
WA_CKAPP03PERS_WAO_STR-SPART sy-vline 
WA_CKAPP03PERS_WAO_STR-SPART_TO sy-vline 
WA_CKAPP03PERS_WAO_STR-VKGRP sy-vline 
WA_CKAPP03PERS_WAO_STR-VKGRP_TO sy-vline 
WA_CKAPP03PERS_WAO_STR-VKBUR sy-vline 
WA_CKAPP03PERS_WAO_STR-VKBUR_TO sy-vline 
WA_CKAPP03PERS_WAO_STR-PRCTR sy-vline 
WA_CKAPP03PERS_WAO_STR-PRCTR_TO sy-vline 
WA_CKAPP03PERS_WAO_STR-KALVAR sy-vline 
WA_CKAPP03PERS_WAO_STR-KALVAR_TO sy-vline 
WA_CKAPP03PERS_WAO_STR-ZSCHL_K sy-vline 
WA_CKAPP03PERS_WAO_STR-ZSCHL_K_TO sy-vline 
WA_CKAPP03PERS_WAO_STR-KALSM_K sy-vline 
WA_CKAPP03PERS_WAO_STR-KALSM_K_TO sy-vline      INTO ld_text SEPARATED BY SPACE.

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