ABAP Select data from SAP table KKAWRT0 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 KKAWRT0 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 KKAWRT0. 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 KKAWRT0 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_KKAWRT0 TYPE STANDARD TABLE OF KKAWRT0,
      WA_KKAWRT0 TYPE KKAWRT0,
      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: <KKAWRT0> TYPE KKAWRT0.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_KKAWRT0.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM KKAWRT0
  INTO TABLE IT_KKAWRT0.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KKAWRT0
*  INTO TABLE @DATA(IT_KKAWRT02).
*--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_KKAWRT0 INDEX 1 INTO DATA(WA_KKAWRT02).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_KKAWRT0 ASSIGNING <KKAWRT0>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KKAWRT0>-WRT01 = 1.
<KKAWRT0>-WRT02 = 1.
<KKAWRT0>-WRT03 = 1.
<KKAWRT0>-WRT04 = 1.
<KKAWRT0>-WRT05 = 1.

ENDLOOP.

LOOP AT IT_KKAWRT0 INTO WA_KKAWRT0.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KKAWRT0-WRT06, sy-vline,
  WA_KKAWRT0-WRT07, sy-vline,
  WA_KKAWRT0-WRT08, sy-vline,
  WA_KKAWRT0-WRT09, sy-vline,
  WA_KKAWRT0-WRT10, sy-vline,
  WA_KKAWRT0-WRT11, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KKAWRT0 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_KKAWRT0 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_KKAWRT0 INTO WA_KKAWRT0.


*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 AC152, internal->external for field WRT01
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKAWRT0-WRT01
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKAWRT0-WRT01.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT02
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKAWRT0-WRT02
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKAWRT0-WRT02.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT03
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKAWRT0-WRT03
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKAWRT0-WRT03.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT04
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKAWRT0-WRT04
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKAWRT0-WRT04.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT05
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKAWRT0-WRT05
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKAWRT0-WRT05.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT06
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKAWRT0-WRT06
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKAWRT0-WRT06.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT07
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKAWRT0-WRT07
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKAWRT0-WRT07.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT08
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKAWRT0-WRT08
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKAWRT0-WRT08.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT09
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKAWRT0-WRT09
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKAWRT0-WRT09.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT10
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKAWRT0-WRT10
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKAWRT0-WRT10.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT11
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKAWRT0-WRT11
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKAWRT0-WRT11.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT12
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKAWRT0-WRT12
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKAWRT0-WRT12.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT13
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKAWRT0-WRT13
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKAWRT0-WRT13.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT14
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKAWRT0-WRT14
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKAWRT0-WRT14.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT15
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKAWRT0-WRT15
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKAWRT0-WRT15.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT16
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKAWRT0-WRT16
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKAWRT0-WRT16.
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_KKAWRT0_STR, 
WRT01 TYPE STRING,
WRT02 TYPE STRING,
WRT03 TYPE STRING,
WRT04 TYPE STRING,
WRT05 TYPE STRING,
WRT06 TYPE STRING,
WRT07 TYPE STRING,
WRT08 TYPE STRING,
WRT09 TYPE STRING,
WRT10 TYPE STRING,
WRT11 TYPE STRING,
WRT12 TYPE STRING,
WRT13 TYPE STRING,
WRT14 TYPE STRING,
WRT15 TYPE STRING,
WRT16 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KKAWRT0_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_KKAWRT0_STR-WRT01 sy-vline 
WA_KKAWRT0_STR-WRT02 sy-vline 
WA_KKAWRT0_STR-WRT03 sy-vline 
WA_KKAWRT0_STR-WRT04 sy-vline 
WA_KKAWRT0_STR-WRT05 sy-vline 
WA_KKAWRT0_STR-WRT06 sy-vline 
WA_KKAWRT0_STR-WRT07 sy-vline 
WA_KKAWRT0_STR-WRT08 sy-vline 
WA_KKAWRT0_STR-WRT09 sy-vline 
WA_KKAWRT0_STR-WRT10 sy-vline 
WA_KKAWRT0_STR-WRT11 sy-vline 
WA_KKAWRT0_STR-WRT12 sy-vline 
WA_KKAWRT0_STR-WRT13 sy-vline 
WA_KKAWRT0_STR-WRT14 sy-vline 
WA_KKAWRT0_STR-WRT15 sy-vline 
WA_KKAWRT0_STR-WRT16 sy-vline      INTO ld_text SEPARATED BY SPACE.

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