ABAP Select data from SAP table AKKP into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP AKKP 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 AKKP. 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 AKKP 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_AKKP TYPE STANDARD TABLE OF AKKP,
      WA_AKKP TYPE AKKP,
      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: <AKKP> TYPE AKKP.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM AKKP
*  INTO TABLE @DATA(IT_AKKP2).
*--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_AKKP INDEX 1 INTO DATA(WA_AKKP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<AKKP>-MANDT = 1.
<AKKP>-LCNUM = 1.
<AKKP>-REFLCNUM = 1.
<AKKP>-AKKEI = 1.
<AKKP>-BUKRS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_AKKP-AKART, sy-vline,
  WA_AKKP-AKKTP, sy-vline,
  WA_AKKP-KUNNR, sy-vline,
  WA_AKKP-ELIFN, sy-vline,
  WA_AKKP-CADNR, sy-vline,
  WA_AKKP-INTER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_AKKP 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_AKKP 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_AKKP INTO WA_AKKP.


*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 LCNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_AKKP-LCNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AKKP-LCNUM.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_AKKP-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AKKP-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field FDLANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_AKKP-FDLANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AKKP-FDLANGU.
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_AKKP_STR, 
MANDT TYPE STRING,
LCNUM TYPE STRING,
REFLCNUM TYPE STRING,
AKKEI TYPE STRING,
BUKRS TYPE STRING,
AKART TYPE STRING,
AKKTP TYPE STRING,
KUNNR TYPE STRING,
ELIFN TYPE STRING,
CADNR TYPE STRING,
INTER TYPE STRING,
WAEMP TYPE STRING,
CADNR_WE TYPE STRING,
AKKST TYPE STRING,
TSSTA TYPE STRING,
TZSTA TYPE STRING,
KOMMA TYPE STRING,
TSSTB TYPE STRING,
TZSTB TYPE STRING,
KOMMB TYPE STRING,
TSSTC TYPE STRING,
TZSTC TYPE STRING,
KOMMC TYPE STRING,
TSSTD TYPE STRING,
TZSTD TYPE STRING,
KOMMD TYPE STRING,
TSSTE TYPE STRING,
TZSTE TYPE STRING,
KOMME TYPE STRING,
AENDGRUND TYPE STRING,
TSSTF TYPE STRING,
TZSTF TYPE STRING,
KOMMF TYPE STRING,
TSSTZ TYPE STRING,
TZSTZ TYPE STRING,
KOMMZ TYPE STRING,
AADAT TYPE STRING,
AATZO TYPE STRING,
AIDAT TYPE STRING,
AITZO TYPE STRING,
AJDAT TYPE STRING,
AJTZO TYPE STRING,
AXDAT TYPE STRING,
AXTZO TYPE STRING,
AXLND TYPE STRING,
AXORT TYPE STRING,
AXREG TYPE STRING,
AYDAT TYPE STRING,
AYTZO TYPE STRING,
AODAT TYPE STRING,
AOTZO TYPE STRING,
AHDAT TYPE STRING,
AHTZO TYPE STRING,
ANYTG TYPE STRING,
WRTAK TYPE STRING,
WAERS TYPE STRING,
IAPRZ TYPE STRING,
EUPRZ TYPE STRING,
ZTERM TYPE STRING,
INCO1 TYPE STRING,
INCO2 TYPE STRING,
AUTLF TYPE STRING,
ATRSI TYPE STRING,
AMINQ TYPE STRING,
AMAXQ TYPE STRING,
MEINS TYPE STRING,
ERNAM TYPE STRING,
ERDAT_TS TYPE STRING,
ERDAT_TZ TYPE STRING,
VOLL TYPE STRING,
AKKCONFIRM TYPE STRING,
UNPRZ TYPE STRING,
KUNFS TYPE STRING,
KUNCK TYPE STRING,
AADFS TYPE STRING,
AADCK TYPE STRING,
AIDFS TYPE STRING,
AIDCK TYPE STRING,
AEDFS TYPE STRING,
AEDCK TYPE STRING,
AXDFS TYPE STRING,
AXDCK TYPE STRING,
AVDFS TYPE STRING,
AVDCK TYPE STRING,
ALDFS TYPE STRING,
ALDCK TYPE STRING,
ADDFS TYPE STRING,
ADDCK TYPE STRING,
AWEFS TYPE STRING,
AWECK TYPE STRING,
IAPFS TYPE STRING,
EUPFS TYPE STRING,
EUPCK TYPE STRING,
TEZFS TYPE STRING,
TEZCK TYPE STRING,
INCFS TYPE STRING,
INCCK TYPE STRING,
AUTFS TYPE STRING,
AUTCK TYPE STRING,
ATRFS TYPE STRING,
ATRCK TYPE STRING,
AMIFS TYPE STRING,
AMICK TYPE STRING,
TXTGR TYPE STRING,
FDLANGU TYPE STRING,
REFFS TYPE STRING,
INDGRUND TYPE STRING,
DOKFREI TYPE STRING,
FTCCD TYPE STRING,
DDZCK TYPE STRING,
DDICK TYPE STRING,
UNPFS TYPE STRING,
UNPCK TYPE STRING,
INCOV TYPE STRING,
INCO2_L TYPE STRING,
INCO3_L TYPE STRING,END OF T_EKKO_STR.
DATA: WA_AKKP_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_AKKP_STR-MANDT sy-vline 
WA_AKKP_STR-LCNUM sy-vline 
WA_AKKP_STR-REFLCNUM sy-vline 
WA_AKKP_STR-AKKEI sy-vline 
WA_AKKP_STR-BUKRS sy-vline 
WA_AKKP_STR-AKART sy-vline 
WA_AKKP_STR-AKKTP sy-vline 
WA_AKKP_STR-KUNNR sy-vline 
WA_AKKP_STR-ELIFN sy-vline 
WA_AKKP_STR-CADNR sy-vline 
WA_AKKP_STR-INTER sy-vline 
WA_AKKP_STR-WAEMP sy-vline 
WA_AKKP_STR-CADNR_WE sy-vline 
WA_AKKP_STR-AKKST sy-vline 
WA_AKKP_STR-TSSTA sy-vline 
WA_AKKP_STR-TZSTA sy-vline 
WA_AKKP_STR-KOMMA sy-vline 
WA_AKKP_STR-TSSTB sy-vline 
WA_AKKP_STR-TZSTB sy-vline 
WA_AKKP_STR-KOMMB sy-vline 
WA_AKKP_STR-TSSTC sy-vline 
WA_AKKP_STR-TZSTC sy-vline 
WA_AKKP_STR-KOMMC sy-vline 
WA_AKKP_STR-TSSTD sy-vline 
WA_AKKP_STR-TZSTD sy-vline 
WA_AKKP_STR-KOMMD sy-vline 
WA_AKKP_STR-TSSTE sy-vline 
WA_AKKP_STR-TZSTE sy-vline 
WA_AKKP_STR-KOMME sy-vline 
WA_AKKP_STR-AENDGRUND sy-vline 
WA_AKKP_STR-TSSTF sy-vline 
WA_AKKP_STR-TZSTF sy-vline 
WA_AKKP_STR-KOMMF sy-vline 
WA_AKKP_STR-TSSTZ sy-vline 
WA_AKKP_STR-TZSTZ sy-vline 
WA_AKKP_STR-KOMMZ sy-vline 
WA_AKKP_STR-AADAT sy-vline 
WA_AKKP_STR-AATZO sy-vline 
WA_AKKP_STR-AIDAT sy-vline 
WA_AKKP_STR-AITZO sy-vline 
WA_AKKP_STR-AJDAT sy-vline 
WA_AKKP_STR-AJTZO sy-vline 
WA_AKKP_STR-AXDAT sy-vline 
WA_AKKP_STR-AXTZO sy-vline 
WA_AKKP_STR-AXLND sy-vline 
WA_AKKP_STR-AXORT sy-vline 
WA_AKKP_STR-AXREG sy-vline 
WA_AKKP_STR-AYDAT sy-vline 
WA_AKKP_STR-AYTZO sy-vline 
WA_AKKP_STR-AODAT sy-vline 
WA_AKKP_STR-AOTZO sy-vline 
WA_AKKP_STR-AHDAT sy-vline 
WA_AKKP_STR-AHTZO sy-vline 
WA_AKKP_STR-ANYTG sy-vline 
WA_AKKP_STR-WRTAK sy-vline 
WA_AKKP_STR-WAERS sy-vline 
WA_AKKP_STR-IAPRZ sy-vline 
WA_AKKP_STR-EUPRZ sy-vline 
WA_AKKP_STR-ZTERM sy-vline 
WA_AKKP_STR-INCO1 sy-vline 
WA_AKKP_STR-INCO2 sy-vline 
WA_AKKP_STR-AUTLF sy-vline 
WA_AKKP_STR-ATRSI sy-vline 
WA_AKKP_STR-AMINQ sy-vline 
WA_AKKP_STR-AMAXQ sy-vline 
WA_AKKP_STR-MEINS sy-vline 
WA_AKKP_STR-ERNAM sy-vline 
WA_AKKP_STR-ERDAT_TS sy-vline 
WA_AKKP_STR-ERDAT_TZ sy-vline 
WA_AKKP_STR-VOLL sy-vline 
WA_AKKP_STR-AKKCONFIRM sy-vline 
WA_AKKP_STR-UNPRZ sy-vline 
WA_AKKP_STR-KUNFS sy-vline 
WA_AKKP_STR-KUNCK sy-vline 
WA_AKKP_STR-AADFS sy-vline 
WA_AKKP_STR-AADCK sy-vline 
WA_AKKP_STR-AIDFS sy-vline 
WA_AKKP_STR-AIDCK sy-vline 
WA_AKKP_STR-AEDFS sy-vline 
WA_AKKP_STR-AEDCK sy-vline 
WA_AKKP_STR-AXDFS sy-vline 
WA_AKKP_STR-AXDCK sy-vline 
WA_AKKP_STR-AVDFS sy-vline 
WA_AKKP_STR-AVDCK sy-vline 
WA_AKKP_STR-ALDFS sy-vline 
WA_AKKP_STR-ALDCK sy-vline 
WA_AKKP_STR-ADDFS sy-vline 
WA_AKKP_STR-ADDCK sy-vline 
WA_AKKP_STR-AWEFS sy-vline 
WA_AKKP_STR-AWECK sy-vline 
WA_AKKP_STR-IAPFS sy-vline 
WA_AKKP_STR-EUPFS sy-vline 
WA_AKKP_STR-EUPCK sy-vline 
WA_AKKP_STR-TEZFS sy-vline 
WA_AKKP_STR-TEZCK sy-vline 
WA_AKKP_STR-INCFS sy-vline 
WA_AKKP_STR-INCCK sy-vline 
WA_AKKP_STR-AUTFS sy-vline 
WA_AKKP_STR-AUTCK sy-vline 
WA_AKKP_STR-ATRFS sy-vline 
WA_AKKP_STR-ATRCK sy-vline 
WA_AKKP_STR-AMIFS sy-vline 
WA_AKKP_STR-AMICK sy-vline 
WA_AKKP_STR-TXTGR sy-vline 
WA_AKKP_STR-FDLANGU sy-vline 
WA_AKKP_STR-REFFS sy-vline 
WA_AKKP_STR-INDGRUND sy-vline 
WA_AKKP_STR-DOKFREI sy-vline 
WA_AKKP_STR-FTCCD sy-vline 
WA_AKKP_STR-DDZCK sy-vline 
WA_AKKP_STR-DDICK sy-vline 
WA_AKKP_STR-UNPFS sy-vline 
WA_AKKP_STR-UNPCK sy-vline 
WA_AKKP_STR-INCOV sy-vline 
WA_AKKP_STR-INCO2_L sy-vline 
WA_AKKP_STR-INCO3_L sy-vline      INTO ld_text SEPARATED BY SPACE.

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