ABAP Select data from SAP table /OPT/VIM_PO_WIH into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /OPT/VIM_PO_WIH 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 /OPT/VIM_PO_WIH. 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 /OPT/VIM_PO_WIH 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_/OPT/VIM_PO_WIH TYPE STANDARD TABLE OF /OPT/VIM_PO_WIH,
      WA_/OPT/VIM_PO_WIH TYPE /OPT/VIM_PO_WIH,
      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: </OPT/VIM_PO_WIH> TYPE /OPT/VIM_PO_WIH.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /OPT/VIM_PO_WIH
  INTO TABLE IT_/OPT/VIM_PO_WIH.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /OPT/VIM_PO_WIH
*  INTO TABLE @DATA(IT_/OPT/VIM_PO_WIH2).
*--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_/OPT/VIM_PO_WIH INDEX 1 INTO DATA(WA_/OPT/VIM_PO_WIH2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/OPT/VIM_PO_WIH ASSIGNING </OPT/VIM_PO_WIH>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</OPT/VIM_PO_WIH>-MANDT = 1.
</OPT/VIM_PO_WIH>-DOC_NUM = 1.
</OPT/VIM_PO_WIH>-FISCAL_YEAR = 1.
</OPT/VIM_PO_WIH>-DOC_LINE = 1.
</OPT/VIM_PO_WIH>-BLOCK_REASON = 1.

ENDLOOP.

LOOP AT IT_/OPT/VIM_PO_WIH INTO WA_/OPT/VIM_PO_WIH.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/OPT/VIM_PO_WIH-WI_ID, sy-vline,
  WA_/OPT/VIM_PO_WIH-PARK_REASON, sy-vline,
  WA_/OPT/VIM_PO_WIH-CURR_AGENT, sy-vline,
  WA_/OPT/VIM_PO_WIH-MULTIPLE_AGENTS, sy-vline,
  WA_/OPT/VIM_PO_WIH-CURR_ROLE, sy-vline,
  WA_/OPT/VIM_PO_WIH-WI_STATUS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/OPT/VIM_PO_WIH 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_/OPT/VIM_PO_WIH 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_/OPT/VIM_PO_WIH INTO WA_/OPT/VIM_PO_WIH.


*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 DOC_NUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/OPT/VIM_PO_WIH-DOC_NUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/OPT/VIM_PO_WIH-DOC_NUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field FISCAL_YEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_/OPT/VIM_PO_WIH-FISCAL_YEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/OPT/VIM_PO_WIH-FISCAL_YEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PO_DOC_NUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/OPT/VIM_PO_WIH-PO_DOC_NUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/OPT/VIM_PO_WIH-PO_DOC_NUM.
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_/OPT/VIM_PO_WIH_STR, 
MANDT TYPE STRING,
DOC_NUM TYPE STRING,
FISCAL_YEAR TYPE STRING,
DOC_LINE TYPE STRING,
BLOCK_REASON TYPE STRING,
WI_ID TYPE STRING,
PARK_REASON TYPE STRING,
CURR_AGENT TYPE STRING,
MULTIPLE_AGENTS TYPE STRING,
CURR_ROLE TYPE STRING,
WI_STATUS TYPE STRING,
LAST_OPTION_TYP TYPE STRING,
LAST_OPTION_ID TYPE STRING,
TASK_ID TYPE STRING,
CREATE_DATE TYPE STRING,
CREATE_TIME TYPE STRING,
END_DATE TYPE STRING,
END_TIME TYPE STRING,
UPDATE_DATE TYPE STRING,
UPDATE_TIME TYPE STRING,
PO_DOC_NUM TYPE STRING,
PO_LIN_NUM TYPE STRING,
LINE_AMOUNT TYPE STRING,
LINE_CURR TYPE STRING,
UPDATE_POINT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/OPT/VIM_PO_WIH_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_/OPT/VIM_PO_WIH_STR-MANDT sy-vline 
WA_/OPT/VIM_PO_WIH_STR-DOC_NUM sy-vline 
WA_/OPT/VIM_PO_WIH_STR-FISCAL_YEAR sy-vline 
WA_/OPT/VIM_PO_WIH_STR-DOC_LINE sy-vline 
WA_/OPT/VIM_PO_WIH_STR-BLOCK_REASON sy-vline 
WA_/OPT/VIM_PO_WIH_STR-WI_ID sy-vline 
WA_/OPT/VIM_PO_WIH_STR-PARK_REASON sy-vline 
WA_/OPT/VIM_PO_WIH_STR-CURR_AGENT sy-vline 
WA_/OPT/VIM_PO_WIH_STR-MULTIPLE_AGENTS sy-vline 
WA_/OPT/VIM_PO_WIH_STR-CURR_ROLE sy-vline 
WA_/OPT/VIM_PO_WIH_STR-WI_STATUS sy-vline 
WA_/OPT/VIM_PO_WIH_STR-LAST_OPTION_TYP sy-vline 
WA_/OPT/VIM_PO_WIH_STR-LAST_OPTION_ID sy-vline 
WA_/OPT/VIM_PO_WIH_STR-TASK_ID sy-vline 
WA_/OPT/VIM_PO_WIH_STR-CREATE_DATE sy-vline 
WA_/OPT/VIM_PO_WIH_STR-CREATE_TIME sy-vline 
WA_/OPT/VIM_PO_WIH_STR-END_DATE sy-vline 
WA_/OPT/VIM_PO_WIH_STR-END_TIME sy-vline 
WA_/OPT/VIM_PO_WIH_STR-UPDATE_DATE sy-vline 
WA_/OPT/VIM_PO_WIH_STR-UPDATE_TIME sy-vline 
WA_/OPT/VIM_PO_WIH_STR-PO_DOC_NUM sy-vline 
WA_/OPT/VIM_PO_WIH_STR-PO_LIN_NUM sy-vline 
WA_/OPT/VIM_PO_WIH_STR-LINE_AMOUNT sy-vline 
WA_/OPT/VIM_PO_WIH_STR-LINE_CURR sy-vline 
WA_/OPT/VIM_PO_WIH_STR-UPDATE_POINT sy-vline      INTO ld_text SEPARATED BY SPACE.

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