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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SCWM/S_DSLP_ROOT_K
*  INTO TABLE @DATA(IT_/SCWM/S_DSLP_ROOT_K2).
*--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_DSLP_ROOT_K INDEX 1 INTO DATA(WA_/SCWM/S_DSLP_ROOT_K2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SCWM/S_DSLP_ROOT_K>-KEY = 1.
</SCWM/S_DSLP_ROOT_K>-PARENT_KEY = 1.
</SCWM/S_DSLP_ROOT_K>-ROOT_KEY = 1.
</SCWM/S_DSLP_ROOT_K>-LOADPOINT = 1.
</SCWM/S_DSLP_ROOT_K>-CAL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SCWM/S_DSLP_ROOT_K-SLOTDURA, sy-vline,
  WA_/SCWM/S_DSLP_ROOT_K-SLOTMIN, sy-vline,
  WA_/SCWM/S_DSLP_ROOT_K-SLOTMAX, sy-vline,
  WA_/SCWM/S_DSLP_ROOT_K-NUMRIN, sy-vline,
  WA_/SCWM/S_DSLP_ROOT_K-LPTYPE, sy-vline,
  WA_/SCWM/S_DSLP_ROOT_K-LP_PARENT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SCWM/S_DSLP_ROOT_K 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_DSLP_ROOT_K 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_DSLP_ROOT_K INTO WA_/SCWM/S_DSLP_ROOT_K.


*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 DSTST, internal->external for field SLOTMIN
CALL FUNCTION 'CONVERSION_EXIT_DSTST_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_DSLP_ROOT_K-SLOTMIN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_DSLP_ROOT_K-SLOTMIN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit DSTST, internal->external for field SLOTMAX
CALL FUNCTION 'CONVERSION_EXIT_DSTST_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_DSLP_ROOT_K-SLOTMAX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_DSLP_ROOT_K-SLOTMAX.
WRITE:/ 'New Value:', ld_input.

*Conversion exit DSDUR, internal->external for field APP_LEAD_TIME
CALL FUNCTION 'CONVERSION_EXIT_DSDUR_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_DSLP_ROOT_K-APP_LEAD_TIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_DSLP_ROOT_K-APP_LEAD_TIME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTLC, internal->external for field CREATED_ON
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_DSLP_ROOT_K-CREATED_ON
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_DSLP_ROOT_K-CREATED_ON.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTLC, internal->external for field CHANGED_ON
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_DSLP_ROOT_K-CHANGED_ON
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_DSLP_ROOT_K-CHANGED_ON.
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_DSLP_ROOT_K_STR, 
KEY TYPE STRING,
PARENT_KEY TYPE STRING,
ROOT_KEY TYPE STRING,
LOADPOINT TYPE STRING,
CAL TYPE STRING,
SLOTDURA TYPE STRING,
SLOTMIN TYPE STRING,
SLOTMAX TYPE STRING,
NUMRIN TYPE STRING,
LPTYPE TYPE STRING,
LP_PARENT TYPE STRING,
LPLOCA TYPE STRING,
EWMINT TYPE STRING,
PLHOR_IND TYPE STRING,
PLHOR_REL_HOURS TYPE STRING,
PLHOR_ABS_DAYS TYPE STRING,
PLHOR_ABS_TIME TYPE STRING,
APP_LEAD_TIME TYPE STRING,
VAR_LENGTH_IND TYPE STRING,
CREATED_BY TYPE STRING,
CREATED_ON TYPE STRING,
CHANGED_BY TYPE STRING,
CHANGED_ON TYPE STRING,
EEW_DSLP_ROOT TYPE STRING,
TZONE TYPE STRING,
COUNTRY TYPE STRING,
REGION TYPE STRING,
STREET TYPE STRING,
HOUSE_NUM1 TYPE STRING,
POST_CODE1 TYPE STRING,
CITY1 TYPE STRING,
LPLOCA_EXISTS_ON_DB TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SCWM/S_DSLP_ROOT_K_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_DSLP_ROOT_K_STR-KEY sy-vline 
WA_/SCWM/S_DSLP_ROOT_K_STR-PARENT_KEY sy-vline 
WA_/SCWM/S_DSLP_ROOT_K_STR-ROOT_KEY sy-vline 
WA_/SCWM/S_DSLP_ROOT_K_STR-LOADPOINT sy-vline 
WA_/SCWM/S_DSLP_ROOT_K_STR-CAL sy-vline 
WA_/SCWM/S_DSLP_ROOT_K_STR-SLOTDURA sy-vline 
WA_/SCWM/S_DSLP_ROOT_K_STR-SLOTMIN sy-vline 
WA_/SCWM/S_DSLP_ROOT_K_STR-SLOTMAX sy-vline 
WA_/SCWM/S_DSLP_ROOT_K_STR-NUMRIN sy-vline 
WA_/SCWM/S_DSLP_ROOT_K_STR-LPTYPE sy-vline 
WA_/SCWM/S_DSLP_ROOT_K_STR-LP_PARENT sy-vline 
WA_/SCWM/S_DSLP_ROOT_K_STR-LPLOCA sy-vline 
WA_/SCWM/S_DSLP_ROOT_K_STR-EWMINT sy-vline 
WA_/SCWM/S_DSLP_ROOT_K_STR-PLHOR_IND sy-vline 
WA_/SCWM/S_DSLP_ROOT_K_STR-PLHOR_REL_HOURS sy-vline 
WA_/SCWM/S_DSLP_ROOT_K_STR-PLHOR_ABS_DAYS sy-vline 
WA_/SCWM/S_DSLP_ROOT_K_STR-PLHOR_ABS_TIME sy-vline 
WA_/SCWM/S_DSLP_ROOT_K_STR-APP_LEAD_TIME sy-vline 
WA_/SCWM/S_DSLP_ROOT_K_STR-VAR_LENGTH_IND sy-vline 
WA_/SCWM/S_DSLP_ROOT_K_STR-CREATED_BY sy-vline 
WA_/SCWM/S_DSLP_ROOT_K_STR-CREATED_ON sy-vline 
WA_/SCWM/S_DSLP_ROOT_K_STR-CHANGED_BY sy-vline 
WA_/SCWM/S_DSLP_ROOT_K_STR-CHANGED_ON sy-vline 
WA_/SCWM/S_DSLP_ROOT_K_STR-EEW_DSLP_ROOT sy-vline 
WA_/SCWM/S_DSLP_ROOT_K_STR-TZONE sy-vline 
WA_/SCWM/S_DSLP_ROOT_K_STR-COUNTRY sy-vline 
WA_/SCWM/S_DSLP_ROOT_K_STR-REGION sy-vline 
WA_/SCWM/S_DSLP_ROOT_K_STR-STREET sy-vline 
WA_/SCWM/S_DSLP_ROOT_K_STR-HOUSE_NUM1 sy-vline 
WA_/SCWM/S_DSLP_ROOT_K_STR-POST_CODE1 sy-vline 
WA_/SCWM/S_DSLP_ROOT_K_STR-CITY1 sy-vline 
WA_/SCWM/S_DSLP_ROOT_K_STR-LPLOCA_EXISTS_ON_DB sy-vline      INTO ld_text SEPARATED BY SPACE.

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