ABAP Select data from SAP table FKKEPOSSUM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKEPOSSUM
*  INTO TABLE @DATA(IT_FKKEPOSSUM2).
*--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_FKKEPOSSUM INDEX 1 INTO DATA(WA_FKKEPOSSUM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKEPOSSUM>-OBETH = 1.
<FKKEPOSSUM>-OBETW = 1.
<FKKEPOSSUM>-GBETH = 1.
<FKKEPOSSUM>-GBETW = 1.
<FKKEPOSSUM>-CBETH = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKEPOSSUM-CBETW, sy-vline,
  WA_FKKEPOSSUM-DBETH, sy-vline,
  WA_FKKEPOSSUM-DBETW, sy-vline,
  WA_FKKEPOSSUM-SBTRH, sy-vline,
  WA_FKKEPOSSUM-HBTRH, sy-vline,
  WA_FKKEPOSSUM-SBTRW, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKEPOSSUM 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_FKKEPOSSUM 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_FKKEPOSSUM INTO WA_FKKEPOSSUM.


*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_FKKEPOSSUM_STR, 
OBETH TYPE STRING,
OBETW TYPE STRING,
GBETH TYPE STRING,
GBETW TYPE STRING,
CBETH TYPE STRING,
CBETW TYPE STRING,
DBETH TYPE STRING,
DBETW TYPE STRING,
SBTRH TYPE STRING,
HBTRH TYPE STRING,
SBTRW TYPE STRING,
HBTRW TYPE STRING,
LBTRH TYPE STRING,
LBTRW TYPE STRING,
AUGBW_PO TYPE STRING,
AUGBH_PO TYPE STRING,
DSPAM TYPE STRING,
MBETM TYPE STRING,
MBETH TYPE STRING,
FSCD_BBETW TYPE STRING,
FSCD_PBETW TYPE STRING,
FSCD_NBETW TYPE STRING,
FSCD_OBETW TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKEPOSSUM_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_FKKEPOSSUM_STR-OBETH sy-vline 
WA_FKKEPOSSUM_STR-OBETW sy-vline 
WA_FKKEPOSSUM_STR-GBETH sy-vline 
WA_FKKEPOSSUM_STR-GBETW sy-vline 
WA_FKKEPOSSUM_STR-CBETH sy-vline 
WA_FKKEPOSSUM_STR-CBETW sy-vline 
WA_FKKEPOSSUM_STR-DBETH sy-vline 
WA_FKKEPOSSUM_STR-DBETW sy-vline 
WA_FKKEPOSSUM_STR-SBTRH sy-vline 
WA_FKKEPOSSUM_STR-HBTRH sy-vline 
WA_FKKEPOSSUM_STR-SBTRW sy-vline 
WA_FKKEPOSSUM_STR-HBTRW sy-vline 
WA_FKKEPOSSUM_STR-LBTRH sy-vline 
WA_FKKEPOSSUM_STR-LBTRW sy-vline 
WA_FKKEPOSSUM_STR-AUGBW_PO sy-vline 
WA_FKKEPOSSUM_STR-AUGBH_PO sy-vline 
WA_FKKEPOSSUM_STR-DSPAM sy-vline 
WA_FKKEPOSSUM_STR-MBETM sy-vline 
WA_FKKEPOSSUM_STR-MBETH sy-vline 
WA_FKKEPOSSUM_STR-FSCD_BBETW sy-vline 
WA_FKKEPOSSUM_STR-FSCD_PBETW sy-vline 
WA_FKKEPOSSUM_STR-FSCD_NBETW sy-vline 
WA_FKKEPOSSUM_STR-FSCD_OBETW sy-vline      INTO ld_text SEPARATED BY SPACE.

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