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

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /MRSS/DPR_PROJECT_DEF_DETAIL
*  INTO TABLE @DATA(IT_/MRSS/DPR_PROJECT_DEF_DETAIL2).
*--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/DPR_PROJECT_DEF_DETAIL INDEX 1 INTO DATA(WA_/MRSS/DPR_PROJECT_DEF_DETAIL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</MRSS/DPR_PROJECT_DEF_DETAIL>-PROJECT_NUMBER = 1.
</MRSS/DPR_PROJECT_DEF_DETAIL>-PROJECT_TYPE = 1.
</MRSS/DPR_PROJECT_DEF_DETAIL>-PROJECT_TYPE_TEXT = 1.
</MRSS/DPR_PROJECT_DEF_DETAIL>-PROJECT_CAUSE = 1.
</MRSS/DPR_PROJECT_DEF_DETAIL>-PROJECT_CAUSE_TEXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/MRSS/DPR_PROJECT_DEF_DETAIL-MASTER_LANGUAGE, sy-vline,
  WA_/MRSS/DPR_PROJECT_DEF_DETAIL-RESPONSIBLE_ROLE, sy-vline,
  WA_/MRSS/DPR_PROJECT_DEF_DETAIL-RESPONSIBLE_ROLE_GUID, sy-vline,
  WA_/MRSS/DPR_PROJECT_DEF_DETAIL-RESPONSIBLE_NAME, sy-vline,
  WA_/MRSS/DPR_PROJECT_DEF_DETAIL-PRIORITY, sy-vline,
  WA_/MRSS/DPR_PROJECT_DEF_DETAIL-FIXED_START_CONSTRAINT_TYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/MRSS/DPR_PROJECT_DEF_DETAIL 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/DPR_PROJECT_DEF_DETAIL 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/DPR_PROJECT_DEF_DETAIL INTO WA_/MRSS/DPR_PROJECT_DEF_DETAIL.


*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 CUNIT, internal->external for field ACTUAL_WORK_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/MRSS/DPR_PROJECT_DEF_DETAIL-ACTUAL_WORK_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MRSS/DPR_PROJECT_DEF_DETAIL-ACTUAL_WORK_UNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ALLOCATION_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/MRSS/DPR_PROJECT_DEF_DETAIL-ALLOCATION_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MRSS/DPR_PROJECT_DEF_DETAIL-ALLOCATION_UNIT.
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/DPR_PROJECT_DEF_DETAIL_STR, 
PROJECT_NUMBER TYPE STRING,
PROJECT_TYPE TYPE STRING,
PROJECT_TYPE_TEXT TYPE STRING,
PROJECT_CAUSE TYPE STRING,
PROJECT_CAUSE_TEXT TYPE STRING,
MASTER_LANGUAGE TYPE STRING,
RESPONSIBLE_ROLE TYPE STRING,
RESPONSIBLE_ROLE_GUID TYPE STRING,
RESPONSIBLE_NAME TYPE STRING,
PRIORITY TYPE STRING,
FIXED_START_CONSTRAINT_TYPE TYPE STRING,
FIXED_START_CONSTRAINT_TEXT TYPE STRING,
FIXED_START_DATE TYPE STRING,
FIXED_FINISH_CONSTRAINT_TYPE TYPE STRING,
FIXED_FINISH_CONSTRAINT_TEXT TYPE STRING,
FIXED_FINISH_DATE TYPE STRING,
CALCULATED_START_DATE TYPE STRING,
CALCULATED_FINISH_DATE TYPE STRING,
CALENDAR TYPE STRING,
CALENDAR_TEXT TYPE STRING,
SOLD_TO_PARTY_NUMBER TYPE STRING,
SOLD_TO_PARTY_NAME TYPE STRING,
SOLD_TO_PARTY_GUID TYPE STRING,
CUSTOMER_NUMBER TYPE STRING,
CUSTOMER_NAME TYPE STRING,
CUSTOMER_GUID TYPE STRING,
GROUPING TYPE STRING,
SEARCH_FIELD TYPE STRING,
ACTUAL_WORK TYPE STRING,
ACTUAL_WORK_UNIT TYPE STRING,
ACTUAL_WORK_UNIT_TEXT TYPE STRING,
CONFIRMATION_GUID TYPE STRING,
RESPONSIBLE_ORGA_UNIT TYPE STRING,
RESPONSIBLE_ORGA_UNIT_SHORT TYPE STRING,
RESPONSIBLE_ORGA_UNIT_TEXT TYPE STRING,
CREATED_BY TYPE STRING,
CREATED_ON TYPE STRING,
CHANGED_BY TYPE STRING,
CHANGED_ON TYPE STRING,
PROJECT_TEMPLATE_NUMBER TYPE STRING,
PROJECT_TEMPLATE_RESPONSIBLE TYPE STRING,
STATUS_PROFILE TYPE STRING,
EVALUATION_SEVERITY TYPE STRING,
EVALUATION_SEVERITY_TEXT TYPE STRING,
MANUAL_SEVERITY TYPE STRING,
MANUAL_SEVERITY_TEXT TYPE STRING,
AGGREGATED_SEVERITY TYPE STRING,
AGGREGATED_SEVERITY_TEXT TYPE STRING,
LOCATION TYPE STRING,
LOCATION_TEXT TYPE STRING,
AREA TYPE STRING,
AREA_TEXT TYPE STRING,
ALLOCATION_UNIT TYPE STRING,
ALLOCATION_UNIT_TEXT TYPE STRING,
PERIOD_TYPE TYPE STRING,
PERIOD_TYPE_TEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/MRSS/DPR_PROJECT_DEF_DETAIL_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/DPR_PROJECT_DEF_DETAIL_STR-PROJECT_NUMBER sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-PROJECT_TYPE sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-PROJECT_TYPE_TEXT sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-PROJECT_CAUSE sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-PROJECT_CAUSE_TEXT sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-MASTER_LANGUAGE sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-RESPONSIBLE_ROLE sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-RESPONSIBLE_ROLE_GUID sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-RESPONSIBLE_NAME sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-PRIORITY sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-FIXED_START_CONSTRAINT_TYPE sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-FIXED_START_CONSTRAINT_TEXT sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-FIXED_START_DATE sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-FIXED_FINISH_CONSTRAINT_TYPE sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-FIXED_FINISH_CONSTRAINT_TEXT sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-FIXED_FINISH_DATE sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-CALCULATED_START_DATE sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-CALCULATED_FINISH_DATE sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-CALENDAR sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-CALENDAR_TEXT sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-SOLD_TO_PARTY_NUMBER sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-SOLD_TO_PARTY_NAME sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-SOLD_TO_PARTY_GUID sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-CUSTOMER_NUMBER sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-CUSTOMER_NAME sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-CUSTOMER_GUID sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-GROUPING sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-SEARCH_FIELD sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-ACTUAL_WORK sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-ACTUAL_WORK_UNIT sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-ACTUAL_WORK_UNIT_TEXT sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-CONFIRMATION_GUID sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-RESPONSIBLE_ORGA_UNIT sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-RESPONSIBLE_ORGA_UNIT_SHORT sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-RESPONSIBLE_ORGA_UNIT_TEXT sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-CREATED_BY sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-CREATED_ON sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-CHANGED_BY sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-CHANGED_ON sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-PROJECT_TEMPLATE_NUMBER sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-PROJECT_TEMPLATE_RESPONSIBLE sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-STATUS_PROFILE sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-EVALUATION_SEVERITY sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-EVALUATION_SEVERITY_TEXT sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-MANUAL_SEVERITY sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-MANUAL_SEVERITY_TEXT sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-AGGREGATED_SEVERITY sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-AGGREGATED_SEVERITY_TEXT sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-LOCATION sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-LOCATION_TEXT sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-AREA sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-AREA_TEXT sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-ALLOCATION_UNIT sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-ALLOCATION_UNIT_TEXT sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-PERIOD_TYPE sy-vline 
WA_/MRSS/DPR_PROJECT_DEF_DETAIL_STR-PERIOD_TYPE_TEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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