ABAP Select data from SAP table CMPESFIWUL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMPESFIWUL
*  INTO TABLE @DATA(IT_CMPESFIWUL2).
*--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_CMPESFIWUL INDEX 1 INTO DATA(WA_CMPESFIWUL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CMPESFIWUL>-MANDT = 1.
<CMPESFIWUL>-RESERVATION = 1.
<CMPESFIWUL>-RESERVATIONITEM = 1.
<CMPESFIWUL>-RECORDTYPE = 1.
<CMPESFIWUL>-OPACTYNTWKINSTANCE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CMPESFIWUL-OPACTYNTWKELEMENT, sy-vline,
  WA_CMPESFIWUL-ASSEMBLYSHOPFLOORITEM, sy-vline,
  WA_CMPESFIWUL-SHOPFLOORITEM, sy-vline,
  WA_CMPESFIWUL-BATCH, sy-vline,
  WA_CMPESFIWUL-MATERIALCOMPONENT, sy-vline,
  WA_CMPESFIWUL-PLANT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CMPESFIWUL 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_CMPESFIWUL 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_CMPESFIWUL INTO WA_CMPESFIWUL.


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

*Conversion exit GERNR, internal->external for field SERIALNUMBER
CALL FUNCTION 'CONVERSION_EXIT_GERNR_OUTPUT'
  EXPORTING
    input =                      WA_CMPESFIWUL-SERIALNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMPESFIWUL-SERIALNUMBER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_CMPESFIWUL-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMPESFIWUL-MATERIAL.
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_CMPESFIWUL_STR, 
MANDT TYPE STRING,
RESERVATION TYPE STRING,
RESERVATIONITEM TYPE STRING,
RECORDTYPE TYPE STRING,
OPACTYNTWKINSTANCE TYPE STRING,
OPACTYNTWKELEMENT TYPE STRING,
ASSEMBLYSHOPFLOORITEM TYPE STRING,
SHOPFLOORITEM TYPE STRING,
BATCH TYPE STRING,
MATERIALCOMPONENT TYPE STRING,
PLANT TYPE STRING,
ORIGLDGTLMOCKUPCHARCSUUID TYPE STRING,
SERIALNUMBER TYPE STRING,
MATERIAL TYPE STRING,
MATERIALNAME TYPE STRING,
PRODUCTIONPLANT TYPE STRING,
REFERENCEDESIGNATORVALUE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMPESFIWUL_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_CMPESFIWUL_STR-MANDT sy-vline 
WA_CMPESFIWUL_STR-RESERVATION sy-vline 
WA_CMPESFIWUL_STR-RESERVATIONITEM sy-vline 
WA_CMPESFIWUL_STR-RECORDTYPE sy-vline 
WA_CMPESFIWUL_STR-OPACTYNTWKINSTANCE sy-vline 
WA_CMPESFIWUL_STR-OPACTYNTWKELEMENT sy-vline 
WA_CMPESFIWUL_STR-ASSEMBLYSHOPFLOORITEM sy-vline 
WA_CMPESFIWUL_STR-SHOPFLOORITEM sy-vline 
WA_CMPESFIWUL_STR-BATCH sy-vline 
WA_CMPESFIWUL_STR-MATERIALCOMPONENT sy-vline 
WA_CMPESFIWUL_STR-PLANT sy-vline 
WA_CMPESFIWUL_STR-ORIGLDGTLMOCKUPCHARCSUUID sy-vline 
WA_CMPESFIWUL_STR-SERIALNUMBER sy-vline 
WA_CMPESFIWUL_STR-MATERIAL sy-vline 
WA_CMPESFIWUL_STR-MATERIALNAME sy-vline 
WA_CMPESFIWUL_STR-PRODUCTIONPLANT sy-vline 
WA_CMPESFIWUL_STR-REFERENCEDESIGNATORVALUE sy-vline      INTO ld_text SEPARATED BY SPACE.

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