ABAP Select data from SAP table MPES_RTGV_OAC_PRT_BO into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MPES_RTGV_OAC_PRT_BO 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 MPES_RTGV_OAC_PRT_BO. 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 MPES_RTGV_OAC_PRT_BO 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_MPES_RTGV_OAC_PRT_BO TYPE STANDARD TABLE OF MPES_RTGV_OAC_PRT_BO,
      WA_MPES_RTGV_OAC_PRT_BO TYPE MPES_RTGV_OAC_PRT_BO,
      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: <MPES_RTGV_OAC_PRT_BO> TYPE MPES_RTGV_OAC_PRT_BO.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM MPES_RTGV_OAC_PRT_BO
  INTO TABLE IT_MPES_RTGV_OAC_PRT_BO.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MPES_RTGV_OAC_PRT_BO
*  INTO TABLE @DATA(IT_MPES_RTGV_OAC_PRT_BO2).
*--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_MPES_RTGV_OAC_PRT_BO INDEX 1 INTO DATA(WA_MPES_RTGV_OAC_PRT_BO2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_MPES_RTGV_OAC_PRT_BO ASSIGNING <MPES_RTGV_OAC_PRT_BO>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MPES_RTGV_OAC_PRT_BO>-PLNTY = 1.
<MPES_RTGV_OAC_PRT_BO>-PLNNR = 1.
<MPES_RTGV_OAC_PRT_BO>-PLNAL = 1.
<MPES_RTGV_OAC_PRT_BO>-VERSN = 1.
<MPES_RTGV_OAC_PRT_BO>-PLNFL = 1.

ENDLOOP.

LOOP AT IT_MPES_RTGV_OAC_PRT_BO INTO WA_MPES_RTGV_OAC_PRT_BO.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MPES_RTGV_OAC_PRT_BO-PLNKN, sy-vline,
  WA_MPES_RTGV_OAC_PRT_BO-SEGMENT_TYPE, sy-vline,
  WA_MPES_RTGV_OAC_PRT_BO-OA_ID, sy-vline,
  WA_MPES_RTGV_OAC_PRT_BO-OA_VERSION_NO, sy-vline,
  WA_MPES_RTGV_OAC_PRT_BO-PZLFH, sy-vline,
  WA_MPES_RTGV_OAC_PRT_BO-OBJTY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MPES_RTGV_OAC_PRT_BO 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_MPES_RTGV_OAC_PRT_BO 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_MPES_RTGV_OAC_PRT_BO INTO WA_MPES_RTGV_OAC_PRT_BO.


*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 PLNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MPES_RTGV_OAC_PRT_BO-PLNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPES_RTGV_OAC_PRT_BO-PLNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PLNAL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MPES_RTGV_OAC_PRT_BO-PLNAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPES_RTGV_OAC_PRT_BO-PLNAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VERSN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MPES_RTGV_OAC_PRT_BO-VERSN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPES_RTGV_OAC_PRT_BO-VERSN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PLNFL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MPES_RTGV_OAC_PRT_BO-PLNFL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPES_RTGV_OAC_PRT_BO-PLNFL.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit FHMAR, internal->external for field FHMAR
CALL FUNCTION 'CONVERSION_EXIT_FHMAR_OUTPUT'
  EXPORTING
    input =                      WA_MPES_RTGV_OAC_PRT_BO-FHMAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPES_RTGV_OAC_PRT_BO-FHMAR.
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_MPES_RTGV_OAC_PRT_BO_STR, 
PLNTY TYPE STRING,
PLNNR TYPE STRING,
PLNAL TYPE STRING,
VERSN TYPE STRING,
PLNFL TYPE STRING,
PLNKN TYPE STRING,
SEGMENT_TYPE TYPE STRING,
OA_ID TYPE STRING,
OA_VERSION_NO TYPE STRING,
PZLFH TYPE STRING,
OBJTY TYPE STRING,
OBJID TYPE STRING,
PSNFH TYPE STRING,
STEUF TYPE STRING,
MGEINH TYPE STRING,
MGVGW TYPE STRING,
MGFORM TYPE STRING,
EWEINH TYPE STRING,
EWVGW TYPE STRING,
EWFORM TYPE STRING,
KTSCH TYPE STRING,
TXTZ1 TYPE STRING,
FHMAR TYPE STRING,
VERSN_ORIGIN_ROUTING TYPE STRING,
REGISTRABLE TYPE STRING,
CREATED_BY TYPE STRING,
CREATED_AT TYPE STRING,
CHANGED_BY TYPE STRING,
CHANGED_AT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MPES_RTGV_OAC_PRT_BO_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_MPES_RTGV_OAC_PRT_BO_STR-PLNTY sy-vline 
WA_MPES_RTGV_OAC_PRT_BO_STR-PLNNR sy-vline 
WA_MPES_RTGV_OAC_PRT_BO_STR-PLNAL sy-vline 
WA_MPES_RTGV_OAC_PRT_BO_STR-VERSN sy-vline 
WA_MPES_RTGV_OAC_PRT_BO_STR-PLNFL sy-vline 
WA_MPES_RTGV_OAC_PRT_BO_STR-PLNKN sy-vline 
WA_MPES_RTGV_OAC_PRT_BO_STR-SEGMENT_TYPE sy-vline 
WA_MPES_RTGV_OAC_PRT_BO_STR-OA_ID sy-vline 
WA_MPES_RTGV_OAC_PRT_BO_STR-OA_VERSION_NO sy-vline 
WA_MPES_RTGV_OAC_PRT_BO_STR-PZLFH sy-vline 
WA_MPES_RTGV_OAC_PRT_BO_STR-OBJTY sy-vline 
WA_MPES_RTGV_OAC_PRT_BO_STR-OBJID sy-vline 
WA_MPES_RTGV_OAC_PRT_BO_STR-PSNFH sy-vline 
WA_MPES_RTGV_OAC_PRT_BO_STR-STEUF sy-vline 
WA_MPES_RTGV_OAC_PRT_BO_STR-MGEINH sy-vline 
WA_MPES_RTGV_OAC_PRT_BO_STR-MGVGW sy-vline 
WA_MPES_RTGV_OAC_PRT_BO_STR-MGFORM sy-vline 
WA_MPES_RTGV_OAC_PRT_BO_STR-EWEINH sy-vline 
WA_MPES_RTGV_OAC_PRT_BO_STR-EWVGW sy-vline 
WA_MPES_RTGV_OAC_PRT_BO_STR-EWFORM sy-vline 
WA_MPES_RTGV_OAC_PRT_BO_STR-KTSCH sy-vline 
WA_MPES_RTGV_OAC_PRT_BO_STR-TXTZ1 sy-vline 
WA_MPES_RTGV_OAC_PRT_BO_STR-FHMAR sy-vline 
WA_MPES_RTGV_OAC_PRT_BO_STR-VERSN_ORIGIN_ROUTING sy-vline 
WA_MPES_RTGV_OAC_PRT_BO_STR-REGISTRABLE sy-vline 
WA_MPES_RTGV_OAC_PRT_BO_STR-CREATED_BY sy-vline 
WA_MPES_RTGV_OAC_PRT_BO_STR-CREATED_AT sy-vline 
WA_MPES_RTGV_OAC_PRT_BO_STR-CHANGED_BY sy-vline 
WA_MPES_RTGV_OAC_PRT_BO_STR-CHANGED_AT sy-vline      INTO ld_text SEPARATED BY SPACE.

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