ABAP Select data from SAP table /ATL/KP002 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /ATL/KP002 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 /ATL/KP002. 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 /ATL/KP002 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_/ATL/KP002 TYPE STANDARD TABLE OF /ATL/KP002,
      WA_/ATL/KP002 TYPE /ATL/KP002,
      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: </ATL/KP002> TYPE /ATL/KP002.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/ATL/KP002.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /ATL/KP002
  INTO TABLE IT_/ATL/KP002.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /ATL/KP002
*  INTO TABLE @DATA(IT_/ATL/KP0022).
*--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_/ATL/KP002 INDEX 1 INTO DATA(WA_/ATL/KP0022).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/ATL/KP002 ASSIGNING </ATL/KP002>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</ATL/KP002>-ZPAYMT = 1.
</ATL/KP002>-ZAMOUNT = 1.
</ATL/KP002>-ZFIRSTPM = 1.
</ATL/KP002>-ZRESTPM = 1.
</ATL/KP002>-ZDATE = 1.

ENDLOOP.

LOOP AT IT_/ATL/KP002 INTO WA_/ATL/KP002.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/ATL/KP002-ZCHEQUE_NO, sy-vline,
  WA_/ATL/KP002-ZBANK_NO, sy-vline,
  WA_/ATL/KP002-ZBRANCHE, sy-vline,
  WA_/ATL/KP002-ZACCT, sy-vline,
  WA_/ATL/KP002-ZPAYER_NO, sy-vline,
  WA_/ATL/KP002-ZLIFNR_NO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/ATL/KP002 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_/ATL/KP002 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_/ATL/KP002 INTO WA_/ATL/KP002.


*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 AC132, internal->external for field ZAMOUNT
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_/ATL/KP002-ZAMOUNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ATL/KP002-ZAMOUNT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field ZFIRSTPM
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_/ATL/KP002-ZFIRSTPM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ATL/KP002-ZFIRSTPM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field ZRESTPM
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_/ATL/KP002-ZRESTPM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ATL/KP002-ZRESTPM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ZPAYER_NO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/ATL/KP002-ZPAYER_NO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ATL/KP002-ZPAYER_NO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ZLIFNR_NO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/ATL/KP002-ZLIFNR_NO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ATL/KP002-ZLIFNR_NO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ZHKONT_NO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/ATL/KP002-ZHKONT_NO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ATL/KP002-ZHKONT_NO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field Z_ZUONR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/ATL/KP002-Z_ZUONR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ATL/KP002-Z_ZUONR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field RCPTYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_/ATL/KP002-RCPTYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ATL/KP002-RCPTYEAR.
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_/ATL/KP002_STR, 
ZPAYMT TYPE STRING,
ZAMOUNT TYPE STRING,
ZFIRSTPM TYPE STRING,
ZRESTPM TYPE STRING,
ZDATE TYPE STRING,
ZCHEQUE_NO TYPE STRING,
ZBANK_NO TYPE STRING,
ZBRANCHE TYPE STRING,
ZACCT TYPE STRING,
ZPAYER_NO TYPE STRING,
ZLIFNR_NO TYPE STRING,
ZHKONT_NO TYPE STRING,
Z_ZUONR TYPE STRING,
ZSTATUS TYPE STRING,
ZMARK TYPE STRING,
ZCDCRCODE TYPE STRING,
ZCRDNUM TYPE STRING,
ZVALDAT TYPE STRING,
ZCRDPAY TYPE STRING,
ZCRDVDT TYPE STRING,
ZCRDATE TYPE STRING,
ZCOUPON TYPE STRING,
ZSORT TYPE STRING,
ZTPARTY TYPE STRING,
ZUONR TYPE STRING,
ZCREDIND TYPE STRING,
ZUPDCRD TYPE STRING,
ZCRDNAM TYPE STRING,
ZTERMNAM TYPE STRING,
ZTERMNO TYPE STRING,
ZPROGVERS TYPE STRING,
ZCRCDID TYPE STRING,
ZCRDTYPE TYPE STRING,
ZAKNNO TYPE STRING,
ZAKNRES TYPE STRING,
ZAKNBY TYPE STRING,
ZDOTYPE TYPE STRING,
ZCRDTYP TYPE STRING,
ZYMSGNO TYPE STRING,
IDNUM_9 TYPE STRING,
CVVCVC TYPE STRING,
CVVCVCOK TYPE STRING,
CRDNUML4 TYPE STRING,
TURISTFL TYPE STRING,
TURISTVISA TYPE STRING,
STARUSAGE TYPE STRING,
CCBRAND TYPE STRING,
CLEARID TYPE STRING,
IDNUM_9ST TYPE STRING,
CVVCVCST TYPE STRING,
ZLINE TYPE STRING,
UMSKZ TYPE STRING,
WAERS TYPE STRING,
MAGNETIC TYPE STRING,
ZYNOAUTOO TYPE STRING,
RCPTYEAR TYPE STRING,
CLRDRECIEPT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/ATL/KP002_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_/ATL/KP002_STR-ZPAYMT sy-vline 
WA_/ATL/KP002_STR-ZAMOUNT sy-vline 
WA_/ATL/KP002_STR-ZFIRSTPM sy-vline 
WA_/ATL/KP002_STR-ZRESTPM sy-vline 
WA_/ATL/KP002_STR-ZDATE sy-vline 
WA_/ATL/KP002_STR-ZCHEQUE_NO sy-vline 
WA_/ATL/KP002_STR-ZBANK_NO sy-vline 
WA_/ATL/KP002_STR-ZBRANCHE sy-vline 
WA_/ATL/KP002_STR-ZACCT sy-vline 
WA_/ATL/KP002_STR-ZPAYER_NO sy-vline 
WA_/ATL/KP002_STR-ZLIFNR_NO sy-vline 
WA_/ATL/KP002_STR-ZHKONT_NO sy-vline 
WA_/ATL/KP002_STR-Z_ZUONR sy-vline 
WA_/ATL/KP002_STR-ZSTATUS sy-vline 
WA_/ATL/KP002_STR-ZMARK sy-vline 
WA_/ATL/KP002_STR-ZCDCRCODE sy-vline 
WA_/ATL/KP002_STR-ZCRDNUM sy-vline 
WA_/ATL/KP002_STR-ZVALDAT sy-vline 
WA_/ATL/KP002_STR-ZCRDPAY sy-vline 
WA_/ATL/KP002_STR-ZCRDVDT sy-vline 
WA_/ATL/KP002_STR-ZCRDATE sy-vline 
WA_/ATL/KP002_STR-ZCOUPON sy-vline 
WA_/ATL/KP002_STR-ZSORT sy-vline 
WA_/ATL/KP002_STR-ZTPARTY sy-vline 
WA_/ATL/KP002_STR-ZUONR sy-vline 
WA_/ATL/KP002_STR-ZCREDIND sy-vline 
WA_/ATL/KP002_STR-ZUPDCRD sy-vline 
WA_/ATL/KP002_STR-ZCRDNAM sy-vline 
WA_/ATL/KP002_STR-ZTERMNAM sy-vline 
WA_/ATL/KP002_STR-ZTERMNO sy-vline 
WA_/ATL/KP002_STR-ZPROGVERS sy-vline 
WA_/ATL/KP002_STR-ZCRCDID sy-vline 
WA_/ATL/KP002_STR-ZCRDTYPE sy-vline 
WA_/ATL/KP002_STR-ZAKNNO sy-vline 
WA_/ATL/KP002_STR-ZAKNRES sy-vline 
WA_/ATL/KP002_STR-ZAKNBY sy-vline 
WA_/ATL/KP002_STR-ZDOTYPE sy-vline 
WA_/ATL/KP002_STR-ZCRDTYP sy-vline 
WA_/ATL/KP002_STR-ZYMSGNO sy-vline 
WA_/ATL/KP002_STR-IDNUM_9 sy-vline 
WA_/ATL/KP002_STR-CVVCVC sy-vline 
WA_/ATL/KP002_STR-CVVCVCOK sy-vline 
WA_/ATL/KP002_STR-CRDNUML4 sy-vline 
WA_/ATL/KP002_STR-TURISTFL sy-vline 
WA_/ATL/KP002_STR-TURISTVISA sy-vline 
WA_/ATL/KP002_STR-STARUSAGE sy-vline 
WA_/ATL/KP002_STR-CCBRAND sy-vline 
WA_/ATL/KP002_STR-CLEARID sy-vline 
WA_/ATL/KP002_STR-IDNUM_9ST sy-vline 
WA_/ATL/KP002_STR-CVVCVCST sy-vline 
WA_/ATL/KP002_STR-ZLINE sy-vline 
WA_/ATL/KP002_STR-UMSKZ sy-vline 
WA_/ATL/KP002_STR-WAERS sy-vline 
WA_/ATL/KP002_STR-MAGNETIC sy-vline 
WA_/ATL/KP002_STR-ZYNOAUTOO sy-vline 
WA_/ATL/KP002_STR-RCPTYEAR sy-vline 
WA_/ATL/KP002_STR-CLRDRECIEPT sy-vline      INTO ld_text SEPARATED BY SPACE.

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