ABAP Select data from SAP table /MRSS/T_CUP_DEM_H_WRK into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /MRSS/T_CUP_DEM_H_WRK
*  INTO TABLE @DATA(IT_/MRSS/T_CUP_DEM_H_WRK2).
*--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_/MRSS/T_CUP_DEM_H_WRK INDEX 1 INTO DATA(WA_/MRSS/T_CUP_DEM_H_WRK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</MRSS/T_CUP_DEM_H_WRK>-KEY_EXT = 1.
</MRSS/T_CUP_DEM_H_WRK>-LOGSYS = 1.
</MRSS/T_CUP_DEM_H_WRK>-GUID = 1.
</MRSS/T_CUP_DEM_H_WRK>-HEADER_EXT = 1.
</MRSS/T_CUP_DEM_H_WRK>-PARENT_EXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/MRSS/T_CUP_DEM_H_WRK-HEADER, sy-vline,
  WA_/MRSS/T_CUP_DEM_H_WRK-PARENT, sy-vline,
  WA_/MRSS/T_CUP_DEM_H_WRK-DEM_TYPE, sy-vline,
  WA_/MRSS/T_CUP_DEM_H_WRK-ID, sy-vline,
  WA_/MRSS/T_CUP_DEM_H_WRK-DESCRIPTION, sy-vline,
  WA_/MRSS/T_CUP_DEM_H_WRK-BASIC_START, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/MRSS/T_CUP_DEM_H_WRK 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_/MRSS/T_CUP_DEM_H_WRK 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_/MRSS/T_CUP_DEM_H_WRK INTO WA_/MRSS/T_CUP_DEM_H_WRK.


*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 LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/MRSS/T_CUP_DEM_H_WRK-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MRSS/T_CUP_DEM_H_WRK-LOGSYS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PROBABILITY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/MRSS/T_CUP_DEM_H_WRK-PROBABILITY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MRSS/T_CUP_DEM_H_WRK-PROBABILITY.
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_/MRSS/T_CUP_DEM_H_WRK_STR, 
KEY_EXT TYPE STRING,
LOGSYS TYPE STRING,
GUID TYPE STRING,
HEADER_EXT TYPE STRING,
PARENT_EXT TYPE STRING,
HEADER TYPE STRING,
PARENT TYPE STRING,
DEM_TYPE TYPE STRING,
ID TYPE STRING,
DESCRIPTION TYPE STRING,
BASIC_START TYPE STRING,
BASIC_END TYPE STRING,
SCHED_START TYPE STRING,
SCHED_END TYPE STRING,
ACTUAL_START TYPE STRING,
ACTUAL_END TYPE STRING,
PLVAR TYPE STRING,
OTYPE TYPE STRING,
OBJID TYPE STRING,
STAT_ERR TYPE STRING,
STAT_COMPL TYPE STRING,
PROBABILITY TYPE STRING,
ORIG_ORDER_TYPE TYPE STRING,
PLANT TYPE STRING,
ACTIVITY_TYPE TYPE STRING,
CREATED_BY TYPE STRING,
CREATED_AT TYPE STRING,
CHANGED_BY TYPE STRING,
CHANGED_AT TYPE STRING,
WORKCENTER_ID TYPE STRING,
WORKCENTER_TYPE TYPE STRING,
WORKCENTER_PLANT TYPE STRING,
SCHEDULING_TYPE TYPE STRING,
STATUS_TAB TYPE STRING,
PARTNER_TAB TYPE STRING,
DELETED TYPE STRING,
MESSAGE TYPE STRING,
MSGTY TYPE STRING,
MSGID TYPE STRING,
MSGNO TYPE STRING,
MSGV1 TYPE STRING,
MSGV2 TYPE STRING,
MSGV3 TYPE STRING,
MSGV4 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/MRSS/T_CUP_DEM_H_WRK_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_/MRSS/T_CUP_DEM_H_WRK_STR-KEY_EXT sy-vline 
WA_/MRSS/T_CUP_DEM_H_WRK_STR-LOGSYS sy-vline 
WA_/MRSS/T_CUP_DEM_H_WRK_STR-GUID sy-vline 
WA_/MRSS/T_CUP_DEM_H_WRK_STR-HEADER_EXT sy-vline 
WA_/MRSS/T_CUP_DEM_H_WRK_STR-PARENT_EXT sy-vline 
WA_/MRSS/T_CUP_DEM_H_WRK_STR-HEADER sy-vline 
WA_/MRSS/T_CUP_DEM_H_WRK_STR-PARENT sy-vline 
WA_/MRSS/T_CUP_DEM_H_WRK_STR-DEM_TYPE sy-vline 
WA_/MRSS/T_CUP_DEM_H_WRK_STR-ID sy-vline 
WA_/MRSS/T_CUP_DEM_H_WRK_STR-DESCRIPTION sy-vline 
WA_/MRSS/T_CUP_DEM_H_WRK_STR-BASIC_START sy-vline 
WA_/MRSS/T_CUP_DEM_H_WRK_STR-BASIC_END sy-vline 
WA_/MRSS/T_CUP_DEM_H_WRK_STR-SCHED_START sy-vline 
WA_/MRSS/T_CUP_DEM_H_WRK_STR-SCHED_END sy-vline 
WA_/MRSS/T_CUP_DEM_H_WRK_STR-ACTUAL_START sy-vline 
WA_/MRSS/T_CUP_DEM_H_WRK_STR-ACTUAL_END sy-vline 
WA_/MRSS/T_CUP_DEM_H_WRK_STR-PLVAR sy-vline 
WA_/MRSS/T_CUP_DEM_H_WRK_STR-OTYPE sy-vline 
WA_/MRSS/T_CUP_DEM_H_WRK_STR-OBJID sy-vline 
WA_/MRSS/T_CUP_DEM_H_WRK_STR-STAT_ERR sy-vline 
WA_/MRSS/T_CUP_DEM_H_WRK_STR-STAT_COMPL sy-vline 
WA_/MRSS/T_CUP_DEM_H_WRK_STR-PROBABILITY sy-vline 
WA_/MRSS/T_CUP_DEM_H_WRK_STR-ORIG_ORDER_TYPE sy-vline 
WA_/MRSS/T_CUP_DEM_H_WRK_STR-PLANT sy-vline 
WA_/MRSS/T_CUP_DEM_H_WRK_STR-ACTIVITY_TYPE sy-vline 
WA_/MRSS/T_CUP_DEM_H_WRK_STR-CREATED_BY sy-vline 
WA_/MRSS/T_CUP_DEM_H_WRK_STR-CREATED_AT sy-vline 
WA_/MRSS/T_CUP_DEM_H_WRK_STR-CHANGED_BY sy-vline 
WA_/MRSS/T_CUP_DEM_H_WRK_STR-CHANGED_AT sy-vline 
WA_/MRSS/T_CUP_DEM_H_WRK_STR-WORKCENTER_ID sy-vline 
WA_/MRSS/T_CUP_DEM_H_WRK_STR-WORKCENTER_TYPE sy-vline 
WA_/MRSS/T_CUP_DEM_H_WRK_STR-WORKCENTER_PLANT sy-vline 
WA_/MRSS/T_CUP_DEM_H_WRK_STR-SCHEDULING_TYPE sy-vline 
WA_/MRSS/T_CUP_DEM_H_WRK_STR-STATUS_TAB sy-vline 
WA_/MRSS/T_CUP_DEM_H_WRK_STR-PARTNER_TAB sy-vline 
WA_/MRSS/T_CUP_DEM_H_WRK_STR-DELETED sy-vline 
WA_/MRSS/T_CUP_DEM_H_WRK_STR-MESSAGE sy-vline 
WA_/MRSS/T_CUP_DEM_H_WRK_STR-MSGTY sy-vline 
WA_/MRSS/T_CUP_DEM_H_WRK_STR-MSGID sy-vline 
WA_/MRSS/T_CUP_DEM_H_WRK_STR-MSGNO sy-vline 
WA_/MRSS/T_CUP_DEM_H_WRK_STR-MSGV1 sy-vline 
WA_/MRSS/T_CUP_DEM_H_WRK_STR-MSGV2 sy-vline 
WA_/MRSS/T_CUP_DEM_H_WRK_STR-MSGV3 sy-vline 
WA_/MRSS/T_CUP_DEM_H_WRK_STR-MSGV4 sy-vline      INTO ld_text SEPARATED BY SPACE.

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