ABAP Select data from SAP table JBRTKCHA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM JBRTKCHA
*  INTO TABLE @DATA(IT_JBRTKCHA2).
*--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_JBRTKCHA INDEX 1 INTO DATA(WA_JBRTKCHA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<JBRTKCHA>-MERKMAL = 1.
<JBRTKCHA>-VARIANTE = 1.
<JBRTKCHA>-NODID = 1.
<JBRTKCHA>-PARNT = 1.
<JBRTKCHA>-LEFTK = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_JBRTKCHA-NODTP, sy-vline,
  WA_JBRTKCHA-WERT1, sy-vline,
  WA_JBRTKCHA-WERT2, sy-vline,
  WA_JBRTKCHA-TEXT1, sy-vline,
  WA_JBRTKCHA-TEXT2, sy-vline,
  WA_JBRTKCHA-TFLAG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_JBRTKCHA 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_JBRTKCHA 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_JBRTKCHA INTO WA_JBRTKCHA.


*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 VARIANTE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JBRTKCHA-VARIANTE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JBRTKCHA-VARIANTE.
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_JBRTKCHA_STR, 
MERKMAL TYPE STRING,
VARIANTE TYPE STRING,
NODID TYPE STRING,
PARNT TYPE STRING,
LEFTK TYPE STRING,
NODTP TYPE STRING,
WERT1 TYPE STRING,
WERT2 TYPE STRING,
TEXT1 TYPE STRING,
TEXT2 TYPE STRING,
TFLAG TYPE STRING,
EXPFL TYPE STRING,
MFLAG TYPE STRING,
COLOR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_JBRTKCHA_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_JBRTKCHA_STR-MERKMAL sy-vline 
WA_JBRTKCHA_STR-VARIANTE sy-vline 
WA_JBRTKCHA_STR-NODID sy-vline 
WA_JBRTKCHA_STR-PARNT sy-vline 
WA_JBRTKCHA_STR-LEFTK sy-vline 
WA_JBRTKCHA_STR-NODTP sy-vline 
WA_JBRTKCHA_STR-WERT1 sy-vline 
WA_JBRTKCHA_STR-WERT2 sy-vline 
WA_JBRTKCHA_STR-TEXT1 sy-vline 
WA_JBRTKCHA_STR-TEXT2 sy-vline 
WA_JBRTKCHA_STR-TFLAG sy-vline 
WA_JBRTKCHA_STR-EXPFL sy-vline 
WA_JBRTKCHA_STR-MFLAG sy-vline 
WA_JBRTKCHA_STR-COLOR sy-vline      INTO ld_text SEPARATED BY SPACE.

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