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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SCWM/S_GWDS_CARR_APP
*  INTO TABLE @DATA(IT_/SCWM/S_GWDS_CARR_APP2).
*--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_GWDS_CARR_APP INDEX 1 INTO DATA(WA_/SCWM/S_GWDS_CARR_APP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SCWM/S_GWDS_CARR_APP>-KEY = 1.
</SCWM/S_GWDS_CARR_APP>-LOADPOINT = 1.
</SCWM/S_GWDS_CARR_APP>-LOADPOINT_KEY = 1.
</SCWM/S_GWDS_CARR_APP>-LOADPOINT_TEXT = 1.
</SCWM/S_GWDS_CARR_APP>-START_TIME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SCWM/S_GWDS_CARR_APP-FINISH_TIME, sy-vline,
  WA_/SCWM/S_GWDS_CARR_APP-SLOT_ROOT_KEY, sy-vline,
  WA_/SCWM/S_GWDS_CARR_APP-DOCNO, sy-vline,
  WA_/SCWM/S_GWDS_CARR_APP-CARRIER, sy-vline,
  WA_/SCWM/S_GWDS_CARR_APP-CARRIER_TEXT, sy-vline,
  WA_/SCWM/S_GWDS_CARR_APP-SCAC_CARR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SCWM/S_GWDS_CARR_APP 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_GWDS_CARR_APP 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_GWDS_CARR_APP INTO WA_/SCWM/S_GWDS_CARR_APP.


*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_GWDS_CARR_APP-DOCNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_GWDS_CARR_APP-DOCNO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CARRIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_GWDS_CARR_APP-CARRIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_GWDS_CARR_APP-CARRIER.
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_GWDS_CARR_APP_STR, 
KEY TYPE STRING,
LOADPOINT TYPE STRING,
LOADPOINT_KEY TYPE STRING,
LOADPOINT_TEXT TYPE STRING,
START_TIME TYPE STRING,
FINISH_TIME TYPE STRING,
SLOT_ROOT_KEY TYPE STRING,
DOCNO TYPE STRING,
CARRIER TYPE STRING,
CARRIER_TEXT TYPE STRING,
SCAC_CARR TYPE STRING,
TRANSMEANSID TYPE STRING,
MTR TYPE STRING,
MTR_TEXT TYPE STRING,
MOTSCODE TYPE STRING,
DRIVER TYPE STRING,
CAPALLOC TYPE STRING,
CARRCREAIND TYPE STRING,
APP_LENGTH TYPE STRING,
REQ_START_TIME TYPE STRING,
REQ_FINISH_TIME TYPE STRING,
REQ_LENGTH TYPE STRING,
PROCSTATUS TYPE STRING,
PROCSTATUS_TXT TYPE STRING,
APP_TYPE TYPE STRING,
CHECKIN_TIME TYPE STRING,
DOCK_TIME TYPE STRING,
UNDOCK_TIME TYPE STRING,
CHECKOUT_TIME TYPE STRING,
NOTE TYPE STRING,
REFDOCNO TYPE STRING,
REFDOCCAT TYPE STRING,
REFDOCNO_MULT TYPE STRING,
LP_PARENT TYPE STRING,
LP_PARENT_KEY TYPE STRING,
LP_PARENT_TEXT TYPE STRING,
NUMBER_PACKAGES TYPE STRING,
PROD_GRP TYPE STRING,
CATEGORY TYPE STRING,
CATEGORY_TXT TYPE STRING,
LOADPOINT_IND TYPE STRING,
IN_YARD_LENGTH TYPE STRING,
RECURRING_IND TYPE STRING,
STAGING_IND TYPE STRING,
PL_CHECKIN_TIME TYPE STRING,
CREATED_BY TYPE STRING,
CREATED_ON TYPE STRING,
CHANGED_BY TYPE STRING,
CHANGED_ON TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SCWM/S_GWDS_CARR_APP_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_GWDS_CARR_APP_STR-KEY sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-LOADPOINT sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-LOADPOINT_KEY sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-LOADPOINT_TEXT sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-START_TIME sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-FINISH_TIME sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-SLOT_ROOT_KEY sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-DOCNO sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-CARRIER sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-CARRIER_TEXT sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-SCAC_CARR sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-TRANSMEANSID sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-MTR sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-MTR_TEXT sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-MOTSCODE sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-DRIVER sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-CAPALLOC sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-CARRCREAIND sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-APP_LENGTH sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-REQ_START_TIME sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-REQ_FINISH_TIME sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-REQ_LENGTH sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-PROCSTATUS sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-PROCSTATUS_TXT sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-APP_TYPE sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-CHECKIN_TIME sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-DOCK_TIME sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-UNDOCK_TIME sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-CHECKOUT_TIME sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-NOTE sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-REFDOCNO sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-REFDOCCAT sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-REFDOCNO_MULT sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-LP_PARENT sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-LP_PARENT_KEY sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-LP_PARENT_TEXT sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-NUMBER_PACKAGES sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-PROD_GRP sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-CATEGORY sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-CATEGORY_TXT sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-LOADPOINT_IND sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-IN_YARD_LENGTH sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-RECURRING_IND sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-STAGING_IND sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-PL_CHECKIN_TIME sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-CREATED_BY sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-CREATED_ON sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-CHANGED_BY sy-vline 
WA_/SCWM/S_GWDS_CARR_APP_STR-CHANGED_ON sy-vline      INTO ld_text SEPARATED BY SPACE.

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