ABAP Select data from SAP table WB2_S_BVDETAIL_OUTPUT_BVDETAIL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP WB2_S_BVDETAIL_OUTPUT_BVDETAIL 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 WB2_S_BVDETAIL_OUTPUT_BVDETAIL. 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 WB2_S_BVDETAIL_OUTPUT_BVDETAIL 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_WB2_S_BVDETAIL_OUTPUT_BVDETAIL TYPE STANDARD TABLE OF WB2_S_BVDETAIL_OUTPUT_BVDETAIL,
      WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL TYPE WB2_S_BVDETAIL_OUTPUT_BVDETAIL,
      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: <WB2_S_BVDETAIL_OUTPUT_BVDETAIL> TYPE WB2_S_BVDETAIL_OUTPUT_BVDETAIL.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_WB2_S_BVDETAIL_OUTPUT_BVDETAIL.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM WB2_S_BVDETAIL_OUTPUT_BVDETAIL
  INTO TABLE IT_WB2_S_BVDETAIL_OUTPUT_BVDETAIL.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WB2_S_BVDETAIL_OUTPUT_BVDETAIL
*  INTO TABLE @DATA(IT_WB2_S_BVDETAIL_OUTPUT_BVDETAIL2).
*--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_WB2_S_BVDETAIL_OUTPUT_BVDETAIL INDEX 1 INTO DATA(WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_WB2_S_BVDETAIL_OUTPUT_BVDETAIL ASSIGNING <WB2_S_BVDETAIL_OUTPUT_BVDETAIL>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WB2_S_BVDETAIL_OUTPUT_BVDETAIL>-MANDT = 1.
<WB2_S_BVDETAIL_OUTPUT_BVDETAIL>-NUM = 1.
<WB2_S_BVDETAIL_OUTPUT_BVDETAIL>-WBELN = 1.
<WB2_S_BVDETAIL_OUTPUT_BVDETAIL>-POSNR = 1.
<WB2_S_BVDETAIL_OUTPUT_BVDETAIL>-DOC_TYPE = 1.

ENDLOOP.

LOOP AT IT_WB2_S_BVDETAIL_OUTPUT_BVDETAIL INTO WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL-DOC_ID, sy-vline,
  WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL-DOC_ID2, sy-vline,
  WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL-DOC_ID3, sy-vline,
  WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL-DOC_ITEM, sy-vline,
  WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL-BV_DATE, sy-vline,
  WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL-MENGE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL 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_WB2_S_BVDETAIL_OUTPUT_BVDETAIL 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_WB2_S_BVDETAIL_OUTPUT_BVDETAIL INTO WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL.


*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 NUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL-NUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL-NUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field WBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL-WBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL-WBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINA
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL-MEINA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL-MEINA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field GEWEI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL-GEWEI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL-GEWEI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VOLEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL-VOLEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL-VOLEH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field PUNEI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL-PUNEI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL-PUNEI.
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_WB2_S_BVDETAIL_OUTPUT_BVDETAIL_STR, 
MANDT TYPE STRING,
NUM TYPE STRING,
WBELN TYPE STRING,
POSNR TYPE STRING,
DOC_TYPE TYPE STRING,
DOC_ID TYPE STRING,
DOC_ID2 TYPE STRING,
DOC_ID3 TYPE STRING,
DOC_ITEM TYPE STRING,
BV_DATE TYPE STRING,
MENGE TYPE STRING,
MEINA TYPE STRING,
WAERS TYPE STRING,
NTGEW TYPE STRING,
BRGEW TYPE STRING,
GEWEI TYPE STRING,
VOLUM TYPE STRING,
VOLEH TYPE STRING,
ANZPU TYPE STRING,
PUNEI TYPE STRING,
SETTL_DOC_TYPE TYPE STRING,
BUSVOL_1 TYPE STRING,
BUSVOL_2 TYPE STRING,
BUSVOL_3 TYPE STRING,
BUSVOL_4 TYPE STRING,
DUMMY1 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL_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_WB2_S_BVDETAIL_OUTPUT_BVDETAIL_STR-MANDT sy-vline 
WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL_STR-NUM sy-vline 
WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL_STR-WBELN sy-vline 
WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL_STR-POSNR sy-vline 
WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL_STR-DOC_TYPE sy-vline 
WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL_STR-DOC_ID sy-vline 
WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL_STR-DOC_ID2 sy-vline 
WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL_STR-DOC_ID3 sy-vline 
WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL_STR-DOC_ITEM sy-vline 
WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL_STR-BV_DATE sy-vline 
WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL_STR-MENGE sy-vline 
WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL_STR-MEINA sy-vline 
WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL_STR-WAERS sy-vline 
WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL_STR-NTGEW sy-vline 
WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL_STR-BRGEW sy-vline 
WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL_STR-GEWEI sy-vline 
WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL_STR-VOLUM sy-vline 
WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL_STR-VOLEH sy-vline 
WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL_STR-ANZPU sy-vline 
WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL_STR-PUNEI sy-vline 
WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL_STR-SETTL_DOC_TYPE sy-vline 
WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL_STR-BUSVOL_1 sy-vline 
WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL_STR-BUSVOL_2 sy-vline 
WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL_STR-BUSVOL_3 sy-vline 
WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL_STR-BUSVOL_4 sy-vline 
WA_WB2_S_BVDETAIL_OUTPUT_BVDETAIL_STR-DUMMY1 sy-vline      INTO ld_text SEPARATED BY SPACE.

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