ABAP Select data from SAP table WRPL_IMPORT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WRPL_IMPORT
*  INTO TABLE @DATA(IT_WRPL_IMPORT2).
*--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_WRPL_IMPORT INDEX 1 INTO DATA(WA_WRPL_IMPORT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WRPL_IMPORT>-KUNNR = 1.
<WRPL_IMPORT>-MATNR = 1.
<WRPL_IMPORT>-DISMM = 1.
<WRPL_IMPORT>-SOBST = 1.
<WRPL_IMPORT>-MINBE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WRPL_IMPORT-EISBE, sy-vline,
  WA_WRPL_IMPORT-PRWUG, sy-vline,
  WA_WRPL_IMPORT-PRWOG, sy-vline,
  WA_WRPL_IMPORT-TRCOV, sy-vline,
  WA_WRPL_IMPORT-NIMGT, sy-vline,
  WA_WRPL_IMPORT-NGRCT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WRPL_IMPORT 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_WRPL_IMPORT 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_WRPL_IMPORT INTO WA_WRPL_IMPORT.


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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WRPL_IMPORT-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRPL_IMPORT-MATNR.
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_WRPL_IMPORT_STR, 
KUNNR TYPE STRING,
MATNR TYPE STRING,
DISMM TYPE STRING,
SOBST TYPE STRING,
MINBE TYPE STRING,
EISBE TYPE STRING,
PRWUG TYPE STRING,
PRWOG TYPE STRING,
TRCOV TYPE STRING,
NIMGT TYPE STRING,
NGRCT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WRPL_IMPORT_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_WRPL_IMPORT_STR-KUNNR sy-vline 
WA_WRPL_IMPORT_STR-MATNR sy-vline 
WA_WRPL_IMPORT_STR-DISMM sy-vline 
WA_WRPL_IMPORT_STR-SOBST sy-vline 
WA_WRPL_IMPORT_STR-MINBE sy-vline 
WA_WRPL_IMPORT_STR-EISBE sy-vline 
WA_WRPL_IMPORT_STR-PRWUG sy-vline 
WA_WRPL_IMPORT_STR-PRWOG sy-vline 
WA_WRPL_IMPORT_STR-TRCOV sy-vline 
WA_WRPL_IMPORT_STR-NIMGT sy-vline 
WA_WRPL_IMPORT_STR-NGRCT sy-vline      INTO ld_text SEPARATED BY SPACE.

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