ABAP Select data from SAP table CRCPWUCOMP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CRCPWUCOMP
*  INTO TABLE @DATA(IT_CRCPWUCOMP2).
*--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_CRCPWUCOMP INDEX 1 INTO DATA(WA_CRCPWUCOMP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CRCPWUCOMP>-MANDT = 1.
<CRCPWUCOMP>-RCPFMLAITEMUUID = 1.
<CRCPWUCOMP>-SPECIFICATIONINTERNALID = 1.
<CRCPWUCOMP>-REFERENCEDSPECIFICATIONINTID = 1.
<CRCPWUCOMP>-RCPFMLAUUID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CRCPWUCOMP-RECIPEUUID, sy-vline,
  WA_CRCPWUCOMP-RCPFMLAITEMTYPE, sy-vline,
  WA_CRCPWUCOMP-RCPPRIMARYOUTPUTHASEXPLSNSTOP, sy-vline,
  WA_CRCPWUCOMP-RECIPEFMLAITEMALTVISUSED, sy-vline,
  WA_CRCPWUCOMP-RCPFMLAITEMCOMPONENTTYPE, sy-vline,
  WA_CRCPWUCOMP-RCPFMLAITEMSTREAMQUANTITYINKG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CRCPWUCOMP 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_CRCPWUCOMP 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_CRCPWUCOMP INTO WA_CRCPWUCOMP.


*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 REFERENCEDSPECIFICATIONINTID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CRCPWUCOMP-REFERENCEDSPECIFICATIONINTID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRCPWUCOMP-REFERENCEDSPECIFICATIONINTID.
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_CRCPWUCOMP_STR, 
MANDT TYPE STRING,
RCPFMLAITEMUUID TYPE STRING,
SPECIFICATIONINTERNALID TYPE STRING,
REFERENCEDSPECIFICATIONINTID TYPE STRING,
RCPFMLAUUID TYPE STRING,
RECIPEUUID TYPE STRING,
RCPFMLAITEMTYPE TYPE STRING,
RCPPRIMARYOUTPUTHASEXPLSNSTOP TYPE STRING,
RECIPEFMLAITEMALTVISUSED TYPE STRING,
RCPFMLAITEMCOMPONENTTYPE TYPE STRING,
RCPFMLAITEMSTREAMQUANTITYINKG TYPE STRING,
COMPSPECQUANTITY TYPE STRING,
SPECVALASSGMTTYPE TYPE STRING,
SPECIFICATIONVALIDITYAREA TYPE STRING,
SPECIFICATIONRATING TYPE STRING,
COMPONENTSPECIFICATIONINTID TYPE STRING,
EXPLOSIONSCOPE TYPE STRING,
RCPPRIMOUTPCOMPONENTTYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CRCPWUCOMP_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_CRCPWUCOMP_STR-MANDT sy-vline 
WA_CRCPWUCOMP_STR-RCPFMLAITEMUUID sy-vline 
WA_CRCPWUCOMP_STR-SPECIFICATIONINTERNALID sy-vline 
WA_CRCPWUCOMP_STR-REFERENCEDSPECIFICATIONINTID sy-vline 
WA_CRCPWUCOMP_STR-RCPFMLAUUID sy-vline 
WA_CRCPWUCOMP_STR-RECIPEUUID sy-vline 
WA_CRCPWUCOMP_STR-RCPFMLAITEMTYPE sy-vline 
WA_CRCPWUCOMP_STR-RCPPRIMARYOUTPUTHASEXPLSNSTOP sy-vline 
WA_CRCPWUCOMP_STR-RECIPEFMLAITEMALTVISUSED sy-vline 
WA_CRCPWUCOMP_STR-RCPFMLAITEMCOMPONENTTYPE sy-vline 
WA_CRCPWUCOMP_STR-RCPFMLAITEMSTREAMQUANTITYINKG sy-vline 
WA_CRCPWUCOMP_STR-COMPSPECQUANTITY sy-vline 
WA_CRCPWUCOMP_STR-SPECVALASSGMTTYPE sy-vline 
WA_CRCPWUCOMP_STR-SPECIFICATIONVALIDITYAREA sy-vline 
WA_CRCPWUCOMP_STR-SPECIFICATIONRATING sy-vline 
WA_CRCPWUCOMP_STR-COMPONENTSPECIFICATIONINTID sy-vline 
WA_CRCPWUCOMP_STR-EXPLOSIONSCOPE sy-vline 
WA_CRCPWUCOMP_STR-RCPPRIMOUTPCOMPONENTTYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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