ABAP Select data from SAP table JBKLBEST_EXT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM JBKLBEST_EXT
*  INTO TABLE @DATA(IT_JBKLBEST_EXT2).
*--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_JBKLBEST_EXT INDEX 1 INTO DATA(WA_JBKLBEST_EXT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<JBKLBEST_EXT>-MANDT = 1.
<JBKLBEST_EXT>-OBJNR = 1.
<JBKLBEST_EXT>-RPORTB = 1.
<JBKLBEST_EXT>-RDEALER = 1.
<JBKLBEST_EXT>-UPUSERK = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_JBKLBEST_EXT-DUPDATK, sy-vline,
  WA_JBKLBEST_EXT-TUPTIMK, sy-vline,
  WA_JBKLBEST_EXT-CRUSERK, sy-vline,
  WA_JBKLBEST_EXT-DCRDATK, sy-vline,
  WA_JBKLBEST_EXT-TCRTIMK, sy-vline,
  WA_JBKLBEST_EXT-AKTDB, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_JBKLBEST_EXT 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_JBKLBEST_EXT 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_JBKLBEST_EXT INTO WA_JBKLBEST_EXT.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_JBKLBEST_EXT_STR, 
MANDT TYPE STRING,
OBJNR TYPE STRING,
RPORTB TYPE STRING,
RDEALER TYPE STRING,
UPUSERK TYPE STRING,
DUPDATK TYPE STRING,
TUPTIMK TYPE STRING,
CRUSERK TYPE STRING,
DCRDATK TYPE STRING,
TCRTIMK TYPE STRING,
AKTDB TYPE STRING,
BFTNR_TMP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_JBKLBEST_EXT_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_JBKLBEST_EXT_STR-MANDT sy-vline 
WA_JBKLBEST_EXT_STR-OBJNR sy-vline 
WA_JBKLBEST_EXT_STR-RPORTB sy-vline 
WA_JBKLBEST_EXT_STR-RDEALER sy-vline 
WA_JBKLBEST_EXT_STR-UPUSERK sy-vline 
WA_JBKLBEST_EXT_STR-DUPDATK sy-vline 
WA_JBKLBEST_EXT_STR-TUPTIMK sy-vline 
WA_JBKLBEST_EXT_STR-CRUSERK sy-vline 
WA_JBKLBEST_EXT_STR-DCRDATK sy-vline 
WA_JBKLBEST_EXT_STR-TCRTIMK sy-vline 
WA_JBKLBEST_EXT_STR-AKTDB sy-vline 
WA_JBKLBEST_EXT_STR-BFTNR_TMP sy-vline      INTO ld_text SEPARATED BY SPACE.

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