ABAP Select data from SAP table IWIPURREQNHDRTXT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IWIPURREQNHDRTXT
*  INTO TABLE @DATA(IT_IWIPURREQNHDRTXT2).
*--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_IWIPURREQNHDRTXT INDEX 1 INTO DATA(WA_IWIPURREQNHDRTXT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IWIPURREQNHDRTXT>-MANDT = 1.
<IWIPURREQNHDRTXT>-WORKFLOWTASKINTERNALID = 1.
<IWIPURREQNHDRTXT>-PURCHASEREQUISITION = 1.
<IWIPURREQNHDRTXT>-PURCHASEREQUISITIONITEM = 1.
<IWIPURREQNHDRTXT>-LANGUAGE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IWIPURREQNHDRTXT-DOCUMENTTEXT, sy-vline,
  WA_IWIPURREQNHDRTXT-TECHNICALOBJECTTYPE, sy-vline,
  WA_IWIPURREQNHDRTXT-ARCHOBJECTNUMBER, sy-vline,
  WA_IWIPURREQNHDRTXT-ARCHOBJECTNUMBERFOREDIT, sy-vline,
  WA_IWIPURREQNHDRTXT-TECHNICALOBJECTTYPEFOREDIT, sy-vline,
  WA_IWIPURREQNHDRTXT-LANGUAGEFOREDIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IWIPURREQNHDRTXT 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_IWIPURREQNHDRTXT 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_IWIPURREQNHDRTXT INTO WA_IWIPURREQNHDRTXT.


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

*Conversion exit ISOLA, internal->external for field LANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_IWIPURREQNHDRTXT-LANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IWIPURREQNHDRTXT-LANGUAGE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field LANGUAGEFOREDIT
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_IWIPURREQNHDRTXT-LANGUAGEFOREDIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IWIPURREQNHDRTXT-LANGUAGEFOREDIT.
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_IWIPURREQNHDRTXT_STR, 
MANDT TYPE STRING,
WORKFLOWTASKINTERNALID TYPE STRING,
PURCHASEREQUISITION TYPE STRING,
PURCHASEREQUISITIONITEM TYPE STRING,
LANGUAGE TYPE STRING,
DOCUMENTTEXT TYPE STRING,
TECHNICALOBJECTTYPE TYPE STRING,
ARCHOBJECTNUMBER TYPE STRING,
ARCHOBJECTNUMBERFOREDIT TYPE STRING,
TECHNICALOBJECTTYPEFOREDIT TYPE STRING,
LANGUAGEFOREDIT TYPE STRING,
NOTEDESCRIPTION TYPE STRING,
FIXEDINDICATOR TYPE STRING,
DISPLAYMODEOFTEXTTYPEINPURG TYPE STRING,
TEXTISADOPTEDFROMREFERENCE TYPE STRING,
WORKFLOWTASKRECIPIENT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IWIPURREQNHDRTXT_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_IWIPURREQNHDRTXT_STR-MANDT sy-vline 
WA_IWIPURREQNHDRTXT_STR-WORKFLOWTASKINTERNALID sy-vline 
WA_IWIPURREQNHDRTXT_STR-PURCHASEREQUISITION sy-vline 
WA_IWIPURREQNHDRTXT_STR-PURCHASEREQUISITIONITEM sy-vline 
WA_IWIPURREQNHDRTXT_STR-LANGUAGE sy-vline 
WA_IWIPURREQNHDRTXT_STR-DOCUMENTTEXT sy-vline 
WA_IWIPURREQNHDRTXT_STR-TECHNICALOBJECTTYPE sy-vline 
WA_IWIPURREQNHDRTXT_STR-ARCHOBJECTNUMBER sy-vline 
WA_IWIPURREQNHDRTXT_STR-ARCHOBJECTNUMBERFOREDIT sy-vline 
WA_IWIPURREQNHDRTXT_STR-TECHNICALOBJECTTYPEFOREDIT sy-vline 
WA_IWIPURREQNHDRTXT_STR-LANGUAGEFOREDIT sy-vline 
WA_IWIPURREQNHDRTXT_STR-NOTEDESCRIPTION sy-vline 
WA_IWIPURREQNHDRTXT_STR-FIXEDINDICATOR sy-vline 
WA_IWIPURREQNHDRTXT_STR-DISPLAYMODEOFTEXTTYPEINPURG sy-vline 
WA_IWIPURREQNHDRTXT_STR-TEXTISADOPTEDFROMREFERENCE sy-vline 
WA_IWIPURREQNHDRTXT_STR-WORKFLOWTASKRECIPIENT sy-vline      INTO ld_text SEPARATED BY SPACE.

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