ABAP Select data from SAP table /SCF/UI_DSSCHDLN_STR into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SCF/UI_DSSCHDLN_STR 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 /SCF/UI_DSSCHDLN_STR. 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 /SCF/UI_DSSCHDLN_STR 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_/SCF/UI_DSSCHDLN_STR TYPE STANDARD TABLE OF /SCF/UI_DSSCHDLN_STR,
      WA_/SCF/UI_DSSCHDLN_STR TYPE /SCF/UI_DSSCHDLN_STR,
      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: </SCF/UI_DSSCHDLN_STR> TYPE /SCF/UI_DSSCHDLN_STR.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SCF/UI_DSSCHDLN_STR
*  INTO TABLE @DATA(IT_/SCF/UI_DSSCHDLN_STR2).
*--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_/SCF/UI_DSSCHDLN_STR INDEX 1 INTO DATA(WA_/SCF/UI_DSSCHDLN_STR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SCF/UI_DSSCHDLN_STR>-RELNUMBER = 1.
</SCF/UI_DSSCHDLN_STR>-SCHEDLINEDATE = 1.
</SCF/UI_DSSCHDLN_STR>-SCHEDLINEQUANTITY = 1.
</SCF/UI_DSSCHDLN_STR>-SCHEDLINEQTYUNIT = 1.
</SCF/UI_DSSCHDLN_STR>-DUEQUANTITY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SCF/UI_DSSCHDLN_STR-DUEQTYUNIT, sy-vline,
  WA_/SCF/UI_DSSCHDLN_STR-DEMANDTYPE, sy-vline,
  WA_/SCF/UI_DSSCHDLN_STR-CUMSCHEDLINEQTY, sy-vline,
  WA_/SCF/UI_DSSCHDLN_STR-TABIX, sy-vline,
  WA_/SCF/UI_DSSCHDLN_STR-SCHEDLINEDATETO, sy-vline,
  WA_/SCF/UI_DSSCHDLN_STR-PICKUP_START_DATETIME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SCF/UI_DSSCHDLN_STR 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_/SCF/UI_DSSCHDLN_STR 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_/SCF/UI_DSSCHDLN_STR INTO WA_/SCF/UI_DSSCHDLN_STR.


*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 RELCV, internal->external for field RELNUMBER
CALL FUNCTION 'CONVERSION_EXIT_RELCV_OUTPUT'
  EXPORTING
    input =                      WA_/SCF/UI_DSSCHDLN_STR-RELNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCF/UI_DSSCHDLN_STR-RELNUMBER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field SCHEDLINEQTYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SCF/UI_DSSCHDLN_STR-SCHEDLINEQTYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCF/UI_DSSCHDLN_STR-SCHEDLINEQTYUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field DUEQTYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SCF/UI_DSSCHDLN_STR-DUEQTYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCF/UI_DSSCHDLN_STR-DUEQTYUNIT.
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_/SCF/UI_DSSCHDLN_STR_STR, 
RELNUMBER TYPE STRING,
SCHEDLINEDATE TYPE STRING,
SCHEDLINEQUANTITY TYPE STRING,
SCHEDLINEQTYUNIT TYPE STRING,
DUEQUANTITY TYPE STRING,
DUEQTYUNIT TYPE STRING,
DEMANDTYPE TYPE STRING,
CUMSCHEDLINEQTY TYPE STRING,
TABIX TYPE STRING,
SCHEDLINEDATETO TYPE STRING,
PICKUP_START_DATETIME TYPE STRING,
PICKUP_END_DATETIME TYPE STRING,
CHANGE_NUMBER TYPE STRING,
ORDID TYPE STRING,
ITMID TYPE STRING,
SDLID TYPE STRING,
NOTES TYPE STRING,
BUYTYPE_CODE TYPE STRING,
COMP_TYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SCF/UI_DSSCHDLN_STR_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_/SCF/UI_DSSCHDLN_STR_STR-RELNUMBER sy-vline 
WA_/SCF/UI_DSSCHDLN_STR_STR-SCHEDLINEDATE sy-vline 
WA_/SCF/UI_DSSCHDLN_STR_STR-SCHEDLINEQUANTITY sy-vline 
WA_/SCF/UI_DSSCHDLN_STR_STR-SCHEDLINEQTYUNIT sy-vline 
WA_/SCF/UI_DSSCHDLN_STR_STR-DUEQUANTITY sy-vline 
WA_/SCF/UI_DSSCHDLN_STR_STR-DUEQTYUNIT sy-vline 
WA_/SCF/UI_DSSCHDLN_STR_STR-DEMANDTYPE sy-vline 
WA_/SCF/UI_DSSCHDLN_STR_STR-CUMSCHEDLINEQTY sy-vline 
WA_/SCF/UI_DSSCHDLN_STR_STR-TABIX sy-vline 
WA_/SCF/UI_DSSCHDLN_STR_STR-SCHEDLINEDATETO sy-vline 
WA_/SCF/UI_DSSCHDLN_STR_STR-PICKUP_START_DATETIME sy-vline 
WA_/SCF/UI_DSSCHDLN_STR_STR-PICKUP_END_DATETIME sy-vline 
WA_/SCF/UI_DSSCHDLN_STR_STR-CHANGE_NUMBER sy-vline 
WA_/SCF/UI_DSSCHDLN_STR_STR-ORDID sy-vline 
WA_/SCF/UI_DSSCHDLN_STR_STR-ITMID sy-vline 
WA_/SCF/UI_DSSCHDLN_STR_STR-SDLID sy-vline 
WA_/SCF/UI_DSSCHDLN_STR_STR-NOTES sy-vline 
WA_/SCF/UI_DSSCHDLN_STR_STR-BUYTYPE_CODE sy-vline 
WA_/SCF/UI_DSSCHDLN_STR_STR-COMP_TYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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