ABAP Select data from SAP table /SCWM/S_WME_MC into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SCWM/S_WME_MC 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 /SCWM/S_WME_MC. 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 /SCWM/S_WME_MC 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_/SCWM/S_WME_MC TYPE STANDARD TABLE OF /SCWM/S_WME_MC,
      WA_/SCWM/S_WME_MC TYPE /SCWM/S_WME_MC,
      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: </SCWM/S_WME_MC> TYPE /SCWM/S_WME_MC.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SCWM/S_WME_MC
  INTO TABLE IT_/SCWM/S_WME_MC.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SCWM/S_WME_MC
*  INTO TABLE @DATA(IT_/SCWM/S_WME_MC2).
*--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_/SCWM/S_WME_MC INDEX 1 INTO DATA(WA_/SCWM/S_WME_MC2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SCWM/S_WME_MC ASSIGNING </SCWM/S_WME_MC>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SCWM/S_WME_MC>-KVEWE = 1.
</SCWM/S_WME_MC>-KOTABNR = 1.
</SCWM/S_WME_MC>-VARNUMH = 1.
</SCWM/S_WME_MC>-KSCHL = 1.
</SCWM/S_WME_MC>-OBJECT_ID = 1.

ENDLOOP.

LOOP AT IT_/SCWM/S_WME_MC INTO WA_/SCWM/S_WME_MC.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SCWM/S_WME_MC-TIMESTAMP_TO, sy-vline,
  WA_/SCWM/S_WME_MC-RELEASE_STATUS, sy-vline,
  WA_/SCWM/S_WME_MC-TIMESTAMP_FROM, sy-vline,
  WA_/SCWM/S_WME_MC-KSCHL_SUPP, sy-vline,
  WA_/SCWM/S_WME_MC-COND_GROUP_ID, sy-vline,
  WA_/SCWM/S_WME_MC-MAINT_STATUS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SCWM/S_WME_MC 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_/SCWM/S_WME_MC 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_/SCWM/S_WME_MC INTO WA_/SCWM/S_WME_MC.


*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 WME_CARRIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_WME_MC-WME_CARRIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_WME_MC-WME_CARRIER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit BPMAP, internal->external for field WME_CUSTOMER
CALL FUNCTION 'CONVERSION_EXIT_BPMAP_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_WME_MC-WME_CUSTOMER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_WME_MC-WME_CUSTOMER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field WME_ENTITLED
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_WME_MC-WME_ENTITLED
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_WME_MC-WME_ENTITLED.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit BPMAP, internal->external for field WME_OWNER
CALL FUNCTION 'CONVERSION_EXIT_BPMAP_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_WME_MC-WME_OWNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_WME_MC-WME_OWNER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field WME_PSA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_WME_MC-WME_PSA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_WME_MC-WME_PSA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPH0, internal->external for field WD_TMPLT
CALL FUNCTION 'CONVERSION_EXIT_ALPH0_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_WME_MC-WD_TMPLT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_WME_MC-WD_TMPLT.
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_/SCWM/S_WME_MC_STR, 
KVEWE TYPE STRING,
KOTABNR TYPE STRING,
VARNUMH TYPE STRING,
KSCHL TYPE STRING,
OBJECT_ID TYPE STRING,
TIMESTAMP_TO TYPE STRING,
RELEASE_STATUS TYPE STRING,
TIMESTAMP_FROM TYPE STRING,
KSCHL_SUPP TYPE STRING,
COND_GROUP_ID TYPE STRING,
MAINT_STATUS TYPE STRING,
CREATED_BY TYPE STRING,
CREATED_ON TYPE STRING,
WME_AAREA TYPE STRING,
WME_CARRIER TYPE STRING,
WME_CARRIER_GR TYPE STRING,
WME_CARRIER_TY TYPE STRING,
WME_CUSTOMER TYPE STRING,
WME_CUSTOMER_GR TYPE STRING,
WME_CUSTOMER_TY TYPE STRING,
WME_DEPART_SCHED TYPE STRING,
WME_DOCCAT TYPE STRING,
WME_DOCTYPE TYPE STRING,
WME_DOOR TYPE STRING,
WME_ENTITLED TYPE STRING,
WME_ITEMCAT TYPE STRING,
WME_ITEMSIND TYPE STRING,
WME_ITEMTYPE TYPE STRING,
WME_LGNUM TYPE STRING,
WME_MATKL TYPE STRING,
WME_MATNR TYPE STRING,
WME_MEDI_PROC TYPE STRING,
WME_MOVE_CNTRL TYPE STRING,
WME_MTR TYPE STRING,
WME_OWNER TYPE STRING,
WME_PROCTY TYPE STRING,
WME_PSA TYPE STRING,
WME_ROUTE TYPE STRING,
WME_SERV_LEVEL TYPE STRING,
WME_STAREA TYPE STRING,
WME_STAREA_GR TYPE STRING,
WME_STORAGEBIN TYPE STRING,
WME_STOSEC TYPE STRING,
WME_STOTYPE TYPE STRING,
WME_VOLUMEIND TYPE STRING,
WME_WAVEPRIO TYPE STRING,
WME_WEIGHTIND TYPE STRING,
WME_WH_PROD_GRP TYPE STRING,
DET_DEFAULT_TIMESTAMP TYPE STRING,
WD_TMPLT TYPE STRING,
KOPOS TYPE STRING,
SUPP_EXIST TYPE STRING,
SCALE_DIM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SCWM/S_WME_MC_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_/SCWM/S_WME_MC_STR-KVEWE sy-vline 
WA_/SCWM/S_WME_MC_STR-KOTABNR sy-vline 
WA_/SCWM/S_WME_MC_STR-VARNUMH sy-vline 
WA_/SCWM/S_WME_MC_STR-KSCHL sy-vline 
WA_/SCWM/S_WME_MC_STR-OBJECT_ID sy-vline 
WA_/SCWM/S_WME_MC_STR-TIMESTAMP_TO sy-vline 
WA_/SCWM/S_WME_MC_STR-RELEASE_STATUS sy-vline 
WA_/SCWM/S_WME_MC_STR-TIMESTAMP_FROM sy-vline 
WA_/SCWM/S_WME_MC_STR-KSCHL_SUPP sy-vline 
WA_/SCWM/S_WME_MC_STR-COND_GROUP_ID sy-vline 
WA_/SCWM/S_WME_MC_STR-MAINT_STATUS sy-vline 
WA_/SCWM/S_WME_MC_STR-CREATED_BY sy-vline 
WA_/SCWM/S_WME_MC_STR-CREATED_ON sy-vline 
WA_/SCWM/S_WME_MC_STR-WME_AAREA sy-vline 
WA_/SCWM/S_WME_MC_STR-WME_CARRIER sy-vline 
WA_/SCWM/S_WME_MC_STR-WME_CARRIER_GR sy-vline 
WA_/SCWM/S_WME_MC_STR-WME_CARRIER_TY sy-vline 
WA_/SCWM/S_WME_MC_STR-WME_CUSTOMER sy-vline 
WA_/SCWM/S_WME_MC_STR-WME_CUSTOMER_GR sy-vline 
WA_/SCWM/S_WME_MC_STR-WME_CUSTOMER_TY sy-vline 
WA_/SCWM/S_WME_MC_STR-WME_DEPART_SCHED sy-vline 
WA_/SCWM/S_WME_MC_STR-WME_DOCCAT sy-vline 
WA_/SCWM/S_WME_MC_STR-WME_DOCTYPE sy-vline 
WA_/SCWM/S_WME_MC_STR-WME_DOOR sy-vline 
WA_/SCWM/S_WME_MC_STR-WME_ENTITLED sy-vline 
WA_/SCWM/S_WME_MC_STR-WME_ITEMCAT sy-vline 
WA_/SCWM/S_WME_MC_STR-WME_ITEMSIND sy-vline 
WA_/SCWM/S_WME_MC_STR-WME_ITEMTYPE sy-vline 
WA_/SCWM/S_WME_MC_STR-WME_LGNUM sy-vline 
WA_/SCWM/S_WME_MC_STR-WME_MATKL sy-vline 
WA_/SCWM/S_WME_MC_STR-WME_MATNR sy-vline 
WA_/SCWM/S_WME_MC_STR-WME_MEDI_PROC sy-vline 
WA_/SCWM/S_WME_MC_STR-WME_MOVE_CNTRL sy-vline 
WA_/SCWM/S_WME_MC_STR-WME_MTR sy-vline 
WA_/SCWM/S_WME_MC_STR-WME_OWNER sy-vline 
WA_/SCWM/S_WME_MC_STR-WME_PROCTY sy-vline 
WA_/SCWM/S_WME_MC_STR-WME_PSA sy-vline 
WA_/SCWM/S_WME_MC_STR-WME_ROUTE sy-vline 
WA_/SCWM/S_WME_MC_STR-WME_SERV_LEVEL sy-vline 
WA_/SCWM/S_WME_MC_STR-WME_STAREA sy-vline 
WA_/SCWM/S_WME_MC_STR-WME_STAREA_GR sy-vline 
WA_/SCWM/S_WME_MC_STR-WME_STORAGEBIN sy-vline 
WA_/SCWM/S_WME_MC_STR-WME_STOSEC sy-vline 
WA_/SCWM/S_WME_MC_STR-WME_STOTYPE sy-vline 
WA_/SCWM/S_WME_MC_STR-WME_VOLUMEIND sy-vline 
WA_/SCWM/S_WME_MC_STR-WME_WAVEPRIO sy-vline 
WA_/SCWM/S_WME_MC_STR-WME_WEIGHTIND sy-vline 
WA_/SCWM/S_WME_MC_STR-WME_WH_PROD_GRP sy-vline 
WA_/SCWM/S_WME_MC_STR-DET_DEFAULT_TIMESTAMP sy-vline 
WA_/SCWM/S_WME_MC_STR-WD_TMPLT sy-vline 
WA_/SCWM/S_WME_MC_STR-KOPOS sy-vline 
WA_/SCWM/S_WME_MC_STR-SUPP_EXIST sy-vline 
WA_/SCWM/S_WME_MC_STR-SCALE_DIM sy-vline      INTO ld_text SEPARATED BY SPACE.

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