ABAP Select data from SAP table U_15958 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP U_15958 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 U_15958. 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 U_15958 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_U_15958 TYPE STANDARD TABLE OF U_15958,
      WA_U_15958 TYPE U_15958,
      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: <U_15958> TYPE U_15958.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_U_15958.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM U_15958
  INTO TABLE IT_U_15958.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM U_15958
*  INTO TABLE @DATA(IT_U_159582).
*--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_U_15958 INDEX 1 INTO DATA(WA_U_159582).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_U_15958 ASSIGNING <U_15958>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<U_15958>-MANDT = 1.
<U_15958>-AKART = 1.
<U_15958>-SPRAS = 1.
<U_15958>-ARTTX = 1.
<U_15958>-AKTYP = 1.

ENDLOOP.

LOOP AT IT_U_15958 INTO WA_U_15958.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_U_15958-VKONB, sy-vline,
  WA_U_15958-VKONE, sy-vline,
  WA_U_15958-VLISB, sy-vline,
  WA_U_15958-VLISE, sy-vline,
  WA_U_15958-VBEKB, sy-vline,
  WA_U_15958-VWEFI, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_U_15958 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_U_15958 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_U_15958 INTO WA_U_15958.


*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 ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_U_15958-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_15958-SPRAS.
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_U_15958_STR, 
MANDT TYPE STRING,
AKART TYPE STRING,
SPRAS TYPE STRING,
ARTTX TYPE STRING,
AKTYP TYPE STRING,
VKONB TYPE STRING,
VKONE TYPE STRING,
VLISB TYPE STRING,
VLISE TYPE STRING,
VBEKB TYPE STRING,
VWEFI TYPE STRING,
NUMKI TYPE STRING,
NUMKE TYPE STRING,
KOPGR TYPE STRING,
FELDK TYPE STRING,
AUFAR TYPE STRING,
EKKON TYPE STRING,
VKKON TYPE STRING,
KOBOG TYPE STRING,
BEKTY TYPE STRING,
KAPPL TYPE STRING,
KSBEK TYPE STRING,
KOBVK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_U_15958_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_U_15958_STR-MANDT sy-vline 
WA_U_15958_STR-AKART sy-vline 
WA_U_15958_STR-SPRAS sy-vline 
WA_U_15958_STR-ARTTX sy-vline 
WA_U_15958_STR-AKTYP sy-vline 
WA_U_15958_STR-VKONB sy-vline 
WA_U_15958_STR-VKONE sy-vline 
WA_U_15958_STR-VLISB sy-vline 
WA_U_15958_STR-VLISE sy-vline 
WA_U_15958_STR-VBEKB sy-vline 
WA_U_15958_STR-VWEFI sy-vline 
WA_U_15958_STR-NUMKI sy-vline 
WA_U_15958_STR-NUMKE sy-vline 
WA_U_15958_STR-KOPGR sy-vline 
WA_U_15958_STR-FELDK sy-vline 
WA_U_15958_STR-AUFAR sy-vline 
WA_U_15958_STR-EKKON sy-vline 
WA_U_15958_STR-VKKON sy-vline 
WA_U_15958_STR-KOBOG sy-vline 
WA_U_15958_STR-BEKTY sy-vline 
WA_U_15958_STR-KAPPL sy-vline 
WA_U_15958_STR-KSBEK sy-vline 
WA_U_15958_STR-KOBVK sy-vline      INTO ld_text SEPARATED BY SPACE.

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