ABAP Select data from SAP table WRPL_ENHANCED into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP WRPL_ENHANCED 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_ENHANCED. 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_ENHANCED 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_ENHANCED TYPE STANDARD TABLE OF WRPL_ENHANCED,
      WA_WRPL_ENHANCED TYPE WRPL_ENHANCED,
      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_ENHANCED> TYPE WRPL_ENHANCED.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WRPL_ENHANCED
*  INTO TABLE @DATA(IT_WRPL_ENHANCED2).
*--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_ENHANCED INDEX 1 INTO DATA(WA_WRPL_ENHANCED2).


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

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

ENDLOOP.

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

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


*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_ENHANCED-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRPL_ENHANCED-KUNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WRPL_ENHANCED-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRPL_ENHANCED-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field HEAD
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WRPL_ENHANCED-HEAD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRPL_ENHANCED-HEAD.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WRPL_ENHANCED-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRPL_ENHANCED-MEINS.
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_ENHANCED_STR, 
MANDT TYPE STRING,
KUNNR TYPE STRING,
MATNR TYPE STRING,
SOBST TYPE STRING,
MINBE TYPE STRING,
EISBE TYPE STRING,
NIMGT TYPE STRING,
NGRCT TYPE STRING,
DISMM TYPE STRING,
PRWUG TYPE STRING,
PRWOG TYPE STRING,
TRCOV TYPE STRING,
STOCK TYPE STRING,
PLTIMEPT TYPE STRING,
PLTIMEZONE TYPE STRING,
GRTIMEPT TYPE STRING,
GRTIMEZONE TYPE STRING,
RPLID TYPE STRING,
RPLRQ TYPE STRING,
RPLST TYPE STRING,
CHCNT TYPE STRING,
ONORD TYPE STRING,
WERKS TYPE STRING,
MENGE TYPE STRING,
RSHKZ TYPE STRING,
IMFLG TYPE STRING,
ATPFLG TYPE STRING,
S130FLG TYPE STRING,
DYNTS TYPE STRING,
HEAD TYPE STRING,
RECEIPTS TYPE STRING,
SALES TYPE STRING,
PRSTOCK TYPE STRING,
PRMOD TYPE STRING,
PERAN TYPE STRING,
ANZPR TYPE STRING,
PERINF TYPE STRING,
PERKZ TYPE STRING,
PERIV TYPE STRING,
FCALID TYPE STRING,
PNUM2 TYPE STRING,
MATKL TYPE STRING,
MEINS TYPE STRING,
LOGISTICAL_MAT_CATEGORY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WRPL_ENHANCED_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_ENHANCED_STR-MANDT sy-vline 
WA_WRPL_ENHANCED_STR-KUNNR sy-vline 
WA_WRPL_ENHANCED_STR-MATNR sy-vline 
WA_WRPL_ENHANCED_STR-SOBST sy-vline 
WA_WRPL_ENHANCED_STR-MINBE sy-vline 
WA_WRPL_ENHANCED_STR-EISBE sy-vline 
WA_WRPL_ENHANCED_STR-NIMGT sy-vline 
WA_WRPL_ENHANCED_STR-NGRCT sy-vline 
WA_WRPL_ENHANCED_STR-DISMM sy-vline 
WA_WRPL_ENHANCED_STR-PRWUG sy-vline 
WA_WRPL_ENHANCED_STR-PRWOG sy-vline 
WA_WRPL_ENHANCED_STR-TRCOV sy-vline 
WA_WRPL_ENHANCED_STR-STOCK sy-vline 
WA_WRPL_ENHANCED_STR-PLTIMEPT sy-vline 
WA_WRPL_ENHANCED_STR-PLTIMEZONE sy-vline 
WA_WRPL_ENHANCED_STR-GRTIMEPT sy-vline 
WA_WRPL_ENHANCED_STR-GRTIMEZONE sy-vline 
WA_WRPL_ENHANCED_STR-RPLID sy-vline 
WA_WRPL_ENHANCED_STR-RPLRQ sy-vline 
WA_WRPL_ENHANCED_STR-RPLST sy-vline 
WA_WRPL_ENHANCED_STR-CHCNT sy-vline 
WA_WRPL_ENHANCED_STR-ONORD sy-vline 
WA_WRPL_ENHANCED_STR-WERKS sy-vline 
WA_WRPL_ENHANCED_STR-MENGE sy-vline 
WA_WRPL_ENHANCED_STR-RSHKZ sy-vline 
WA_WRPL_ENHANCED_STR-IMFLG sy-vline 
WA_WRPL_ENHANCED_STR-ATPFLG sy-vline 
WA_WRPL_ENHANCED_STR-S130FLG sy-vline 
WA_WRPL_ENHANCED_STR-DYNTS sy-vline 
WA_WRPL_ENHANCED_STR-HEAD sy-vline 
WA_WRPL_ENHANCED_STR-RECEIPTS sy-vline 
WA_WRPL_ENHANCED_STR-SALES sy-vline 
WA_WRPL_ENHANCED_STR-PRSTOCK sy-vline 
WA_WRPL_ENHANCED_STR-PRMOD sy-vline 
WA_WRPL_ENHANCED_STR-PERAN sy-vline 
WA_WRPL_ENHANCED_STR-ANZPR sy-vline 
WA_WRPL_ENHANCED_STR-PERINF sy-vline 
WA_WRPL_ENHANCED_STR-PERKZ sy-vline 
WA_WRPL_ENHANCED_STR-PERIV sy-vline 
WA_WRPL_ENHANCED_STR-FCALID sy-vline 
WA_WRPL_ENHANCED_STR-PNUM2 sy-vline 
WA_WRPL_ENHANCED_STR-MATKL sy-vline 
WA_WRPL_ENHANCED_STR-MEINS sy-vline 
WA_WRPL_ENHANCED_STR-LOGISTICAL_MAT_CATEGORY sy-vline      INTO ld_text SEPARATED BY SPACE.

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