ABAP Select data from SAP table KKAGACDOCA1TKKAZ into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP KKAGACDOCA1TKKAZ 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 KKAGACDOCA1TKKAZ. 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 KKAGACDOCA1TKKAZ 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_KKAGACDOCA1TKKAZ TYPE STANDARD TABLE OF KKAGACDOCA1TKKAZ,
      WA_KKAGACDOCA1TKKAZ TYPE KKAGACDOCA1TKKAZ,
      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: <KKAGACDOCA1TKKAZ> TYPE KKAGACDOCA1TKKAZ.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_KKAGACDOCA1TKKAZ.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM KKAGACDOCA1TKKAZ
  INTO TABLE IT_KKAGACDOCA1TKKAZ.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KKAGACDOCA1TKKAZ
*  INTO TABLE @DATA(IT_KKAGACDOCA1TKKAZ2).
*--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_KKAGACDOCA1TKKAZ INDEX 1 INTO DATA(WA_KKAGACDOCA1TKKAZ2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_KKAGACDOCA1TKKAZ ASSIGNING <KKAGACDOCA1TKKAZ>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KKAGACDOCA1TKKAZ>-MANDT = 1.
<KKAGACDOCA1TKKAZ>-RLDNR = 1.
<KKAGACDOCA1TKKAZ>-RBUKRS = 1.
<KKAGACDOCA1TKKAZ>-OBJNR = 1.
<KKAGACDOCA1TKKAZ>-GJAHR = 1.

ENDLOOP.

LOOP AT IT_KKAGACDOCA1TKKAZ INTO WA_KKAGACDOCA1TKKAZ.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KKAGACDOCA1TKKAZ-RACCT, sy-vline,
  WA_KKAGACDOCA1TKKAZ-KSTAR_CHECK, sy-vline,
  WA_KKAGACDOCA1TKKAZ-HRKFT, sy-vline,
  WA_KKAGACDOCA1TKKAZ-CO_BEKNZ, sy-vline,
  WA_KKAGACDOCA1TKKAZ-RWCUR, sy-vline,
  WA_KKAGACDOCA1TKKAZ-RUNIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KKAGACDOCA1TKKAZ 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_KKAGACDOCA1TKKAZ 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_KKAGACDOCA1TKKAZ INTO WA_KKAGACDOCA1TKKAZ.


*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 RLDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KKAGACDOCA1TKKAZ-RLDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKAGACDOCA1TKKAZ-RLDNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_KKAGACDOCA1TKKAZ-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKAGACDOCA1TKKAZ-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RACCT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KKAGACDOCA1TKKAZ-RACCT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKAGACDOCA1TKKAZ-RACCT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KSTAR_CHECK
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KKAGACDOCA1TKKAZ-KSTAR_CHECK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKAGACDOCA1TKKAZ-KSTAR_CHECK.
WRITE:/ 'New Value:', ld_input.

*Conversion exit BEKNZ, internal->external for field CO_BEKNZ
CALL FUNCTION 'CONVERSION_EXIT_BEKNZ_OUTPUT'
  EXPORTING
    input =                      WA_KKAGACDOCA1TKKAZ-CO_BEKNZ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKAGACDOCA1TKKAZ-CO_BEKNZ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field RUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_KKAGACDOCA1TKKAZ-RUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKAGACDOCA1TKKAZ-RUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PERI7, internal->external for field FISCYEARPER
CALL FUNCTION 'CONVERSION_EXIT_PERI7_OUTPUT'
  EXPORTING
    input =                      WA_KKAGACDOCA1TKKAZ-FISCYEARPER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKAGACDOCA1TKKAZ-FISCYEARPER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VERSA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KKAGACDOCA1TKKAZ-VERSA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKAGACDOCA1TKKAZ-VERSA.
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_KKAGACDOCA1TKKAZ_STR, 
MANDT TYPE STRING,
RLDNR TYPE STRING,
RBUKRS TYPE STRING,
OBJNR TYPE STRING,
GJAHR TYPE STRING,
RACCT TYPE STRING,
KSTAR_CHECK TYPE STRING,
HRKFT TYPE STRING,
CO_BEKNZ TYPE STRING,
RWCUR TYPE STRING,
RUNIT TYPE STRING,
POPER TYPE STRING,
FISCYEARPER TYPE STRING,
KSL TYPE STRING,
KFSL TYPE STRING,
HSL TYPE STRING,
WSL TYPE STRING,
MSL TYPE STRING,
VERSA TYPE STRING,
ABGSL TYPE STRING,
ZIDAP TYPE STRING,
ZIDAW TYPE STRING,
ZIDNF TYPE STRING,
AWRPZ TYPE STRING,
NAFPZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KKAGACDOCA1TKKAZ_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_KKAGACDOCA1TKKAZ_STR-MANDT sy-vline 
WA_KKAGACDOCA1TKKAZ_STR-RLDNR sy-vline 
WA_KKAGACDOCA1TKKAZ_STR-RBUKRS sy-vline 
WA_KKAGACDOCA1TKKAZ_STR-OBJNR sy-vline 
WA_KKAGACDOCA1TKKAZ_STR-GJAHR sy-vline 
WA_KKAGACDOCA1TKKAZ_STR-RACCT sy-vline 
WA_KKAGACDOCA1TKKAZ_STR-KSTAR_CHECK sy-vline 
WA_KKAGACDOCA1TKKAZ_STR-HRKFT sy-vline 
WA_KKAGACDOCA1TKKAZ_STR-CO_BEKNZ sy-vline 
WA_KKAGACDOCA1TKKAZ_STR-RWCUR sy-vline 
WA_KKAGACDOCA1TKKAZ_STR-RUNIT sy-vline 
WA_KKAGACDOCA1TKKAZ_STR-POPER sy-vline 
WA_KKAGACDOCA1TKKAZ_STR-FISCYEARPER sy-vline 
WA_KKAGACDOCA1TKKAZ_STR-KSL sy-vline 
WA_KKAGACDOCA1TKKAZ_STR-KFSL sy-vline 
WA_KKAGACDOCA1TKKAZ_STR-HSL sy-vline 
WA_KKAGACDOCA1TKKAZ_STR-WSL sy-vline 
WA_KKAGACDOCA1TKKAZ_STR-MSL sy-vline 
WA_KKAGACDOCA1TKKAZ_STR-VERSA sy-vline 
WA_KKAGACDOCA1TKKAZ_STR-ABGSL sy-vline 
WA_KKAGACDOCA1TKKAZ_STR-ZIDAP sy-vline 
WA_KKAGACDOCA1TKKAZ_STR-ZIDAW sy-vline 
WA_KKAGACDOCA1TKKAZ_STR-ZIDNF sy-vline 
WA_KKAGACDOCA1TKKAZ_STR-AWRPZ sy-vline 
WA_KKAGACDOCA1TKKAZ_STR-NAFPZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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