ABAP Select data from SAP table /SCWM/S_DSAPP_CARR_ELEMENTS 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_DSAPP_CARR_ELEMENTS 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_DSAPP_CARR_ELEMENTS. 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_DSAPP_CARR_ELEMENTS 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_DSAPP_CARR_ELEMENTS TYPE STANDARD TABLE OF /SCWM/S_DSAPP_CARR_ELEMENTS,
      WA_/SCWM/S_DSAPP_CARR_ELEMENTS TYPE /SCWM/S_DSAPP_CARR_ELEMENTS,
      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_DSAPP_CARR_ELEMENTS> TYPE /SCWM/S_DSAPP_CARR_ELEMENTS.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SCWM/S_DSAPP_CARR_ELEMENTS
*  INTO TABLE @DATA(IT_/SCWM/S_DSAPP_CARR_ELEMENTS2).
*--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_DSAPP_CARR_ELEMENTS INDEX 1 INTO DATA(WA_/SCWM/S_DSAPP_CARR_ELEMENTS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SCWM/S_DSAPP_CARR_ELEMENTS>-LOADPOINT = 1.
</SCWM/S_DSAPP_CARR_ELEMENTS>-START_DATE_SEL = 1.
</SCWM/S_DSAPP_CARR_ELEMENTS>-START_TIME_SEL = 1.
</SCWM/S_DSAPP_CARR_ELEMENTS>-DOCNO = 1.
</SCWM/S_DSAPP_CARR_ELEMENTS>-TRANSMEANSID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SCWM/S_DSAPP_CARR_ELEMENTS-MTR, sy-vline,
  WA_/SCWM/S_DSAPP_CARR_ELEMENTS-MOTSCODE, sy-vline,
  WA_/SCWM/S_DSAPP_CARR_ELEMENTS-DRIVER, sy-vline,
  WA_/SCWM/S_DSAPP_CARR_ELEMENTS-CAPALLOC, sy-vline,
  WA_/SCWM/S_DSAPP_CARR_ELEMENTS-CARRCREAIND, sy-vline,
  WA_/SCWM/S_DSAPP_CARR_ELEMENTS-PROCSTATUS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SCWM/S_DSAPP_CARR_ELEMENTS 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_DSAPP_CARR_ELEMENTS 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_DSAPP_CARR_ELEMENTS INTO WA_/SCWM/S_DSAPP_CARR_ELEMENTS.


*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 DOCNO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_DSAPP_CARR_ELEMENTS-DOCNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_DSAPP_CARR_ELEMENTS-DOCNO.
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_DSAPP_CARR_ELEMENTS_STR, 
LOADPOINT TYPE STRING,
START_DATE_SEL TYPE STRING,
START_TIME_SEL TYPE STRING,
DOCNO TYPE STRING,
TRANSMEANSID TYPE STRING,
MTR TYPE STRING,
MOTSCODE TYPE STRING,
DRIVER TYPE STRING,
CAPALLOC TYPE STRING,
CARRCREAIND TYPE STRING,
PROCSTATUS TYPE STRING,
REFDOCNO TYPE STRING,
REFDOCCAT TYPE STRING,
LP_PARENT TYPE STRING,
PROD_GRP TYPE STRING,
CATEGORY TYPE STRING,
REQ_START_DATE TYPE STRING,
REQ_START_TIME TYPE STRING,
PL_ARRIVAL_DATE TYPE STRING,
PL_ARRIVAL_TIME TYPE STRING,
RECURRING_IND TYPE STRING,
STAGING_IND TYPE STRING,
EEW_DSAPP_ROOT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SCWM/S_DSAPP_CARR_ELEMENTS_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_DSAPP_CARR_ELEMENTS_STR-LOADPOINT sy-vline 
WA_/SCWM/S_DSAPP_CARR_ELEMENTS_STR-START_DATE_SEL sy-vline 
WA_/SCWM/S_DSAPP_CARR_ELEMENTS_STR-START_TIME_SEL sy-vline 
WA_/SCWM/S_DSAPP_CARR_ELEMENTS_STR-DOCNO sy-vline 
WA_/SCWM/S_DSAPP_CARR_ELEMENTS_STR-TRANSMEANSID sy-vline 
WA_/SCWM/S_DSAPP_CARR_ELEMENTS_STR-MTR sy-vline 
WA_/SCWM/S_DSAPP_CARR_ELEMENTS_STR-MOTSCODE sy-vline 
WA_/SCWM/S_DSAPP_CARR_ELEMENTS_STR-DRIVER sy-vline 
WA_/SCWM/S_DSAPP_CARR_ELEMENTS_STR-CAPALLOC sy-vline 
WA_/SCWM/S_DSAPP_CARR_ELEMENTS_STR-CARRCREAIND sy-vline 
WA_/SCWM/S_DSAPP_CARR_ELEMENTS_STR-PROCSTATUS sy-vline 
WA_/SCWM/S_DSAPP_CARR_ELEMENTS_STR-REFDOCNO sy-vline 
WA_/SCWM/S_DSAPP_CARR_ELEMENTS_STR-REFDOCCAT sy-vline 
WA_/SCWM/S_DSAPP_CARR_ELEMENTS_STR-LP_PARENT sy-vline 
WA_/SCWM/S_DSAPP_CARR_ELEMENTS_STR-PROD_GRP sy-vline 
WA_/SCWM/S_DSAPP_CARR_ELEMENTS_STR-CATEGORY sy-vline 
WA_/SCWM/S_DSAPP_CARR_ELEMENTS_STR-REQ_START_DATE sy-vline 
WA_/SCWM/S_DSAPP_CARR_ELEMENTS_STR-REQ_START_TIME sy-vline 
WA_/SCWM/S_DSAPP_CARR_ELEMENTS_STR-PL_ARRIVAL_DATE sy-vline 
WA_/SCWM/S_DSAPP_CARR_ELEMENTS_STR-PL_ARRIVAL_TIME sy-vline 
WA_/SCWM/S_DSAPP_CARR_ELEMENTS_STR-RECURRING_IND sy-vline 
WA_/SCWM/S_DSAPP_CARR_ELEMENTS_STR-STAGING_IND sy-vline 
WA_/SCWM/S_DSAPP_CARR_ELEMENTS_STR-EEW_DSAPP_ROOT sy-vline      INTO ld_text SEPARATED BY SPACE.

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