ABAP Select data from SAP table MPES_RTGV_OAC_COM_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_COM_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_COM_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_COM_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_COM_BO TYPE STANDARD TABLE OF MPES_RTGV_OAC_COM_BO,
      WA_MPES_RTGV_OAC_COM_BO TYPE MPES_RTGV_OAC_COM_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_COM_BO> TYPE MPES_RTGV_OAC_COM_BO.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MPES_RTGV_OAC_COM_BO
*  INTO TABLE @DATA(IT_MPES_RTGV_OAC_COM_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_COM_BO INDEX 1 INTO DATA(WA_MPES_RTGV_OAC_COM_BO2).


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

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

ENDLOOP.

LOOP AT IT_MPES_RTGV_OAC_COM_BO INTO WA_MPES_RTGV_OAC_COM_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_COM_BO-PLNKN, sy-vline,
  WA_MPES_RTGV_OAC_COM_BO-SEGMENT_TYPE, sy-vline,
  WA_MPES_RTGV_OAC_COM_BO-OA_ID, sy-vline,
  WA_MPES_RTGV_OAC_COM_BO-OA_VERSION_NO, sy-vline,
  WA_MPES_RTGV_OAC_COM_BO-ZUONR, sy-vline,
  WA_MPES_RTGV_OAC_COM_BO-STLTY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MPES_RTGV_OAC_COM_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_COM_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_COM_BO INTO WA_MPES_RTGV_OAC_COM_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_COM_BO-PLNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPES_RTGV_OAC_COM_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_COM_BO-PLNAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPES_RTGV_OAC_COM_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_COM_BO-VERSN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPES_RTGV_OAC_COM_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_COM_BO-PLNFL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPES_RTGV_OAC_COM_BO-PLNFL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field STLNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_MPES_RTGV_OAC_COM_BO-STLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPES_RTGV_OAC_COM_BO-STLNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit MATN1, internal->external for field IDNRK
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MPES_RTGV_OAC_COM_BO-IDNRK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPES_RTGV_OAC_COM_BO-IDNRK.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field BASE_UOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MPES_RTGV_OAC_COM_BO-BASE_UOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPES_RTGV_OAC_COM_BO-BASE_UOM.
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_COM_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,
ZUONR TYPE STRING,
STLTY TYPE STRING,
STLNR TYPE STRING,
STLAL TYPE STRING,
BOM_VERSN TYPE STRING,
STVKN TYPE STRING,
ANDAT TYPE STRING,
ANNAM TYPE STRING,
AEDAT TYPE STRING,
AENAM TYPE STRING,
IDNRK TYPE STRING,
IMENG TYPE STRING,
IMEIN TYPE STRING,
RGEKZ TYPE STRING,
MAT_RGEKZ TYPE STRING,
WRKC_RGEKZ TYPE STRING,
IS_BACKFLUSHED TYPE STRING,
QUANTITY TYPE STRING,
BASE_UOM TYPE STRING,
IS_OUTPUT TYPE STRING,
SEQUENCE_NO TYPE STRING,
INSTANCE_ASSEMBLY_RQD TYPE STRING,
LOG_COMP_COUNTER TYPE STRING,
LOG_COMP 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_COM_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_COM_BO_STR-PLNTY sy-vline 
WA_MPES_RTGV_OAC_COM_BO_STR-PLNNR sy-vline 
WA_MPES_RTGV_OAC_COM_BO_STR-PLNAL sy-vline 
WA_MPES_RTGV_OAC_COM_BO_STR-VERSN sy-vline 
WA_MPES_RTGV_OAC_COM_BO_STR-PLNFL sy-vline 
WA_MPES_RTGV_OAC_COM_BO_STR-PLNKN sy-vline 
WA_MPES_RTGV_OAC_COM_BO_STR-SEGMENT_TYPE sy-vline 
WA_MPES_RTGV_OAC_COM_BO_STR-OA_ID sy-vline 
WA_MPES_RTGV_OAC_COM_BO_STR-OA_VERSION_NO sy-vline 
WA_MPES_RTGV_OAC_COM_BO_STR-ZUONR sy-vline 
WA_MPES_RTGV_OAC_COM_BO_STR-STLTY sy-vline 
WA_MPES_RTGV_OAC_COM_BO_STR-STLNR sy-vline 
WA_MPES_RTGV_OAC_COM_BO_STR-STLAL sy-vline 
WA_MPES_RTGV_OAC_COM_BO_STR-BOM_VERSN sy-vline 
WA_MPES_RTGV_OAC_COM_BO_STR-STVKN sy-vline 
WA_MPES_RTGV_OAC_COM_BO_STR-ANDAT sy-vline 
WA_MPES_RTGV_OAC_COM_BO_STR-ANNAM sy-vline 
WA_MPES_RTGV_OAC_COM_BO_STR-AEDAT sy-vline 
WA_MPES_RTGV_OAC_COM_BO_STR-AENAM sy-vline 
WA_MPES_RTGV_OAC_COM_BO_STR-IDNRK sy-vline 
WA_MPES_RTGV_OAC_COM_BO_STR-IMENG sy-vline 
WA_MPES_RTGV_OAC_COM_BO_STR-IMEIN sy-vline 
WA_MPES_RTGV_OAC_COM_BO_STR-RGEKZ sy-vline 
WA_MPES_RTGV_OAC_COM_BO_STR-MAT_RGEKZ sy-vline 
WA_MPES_RTGV_OAC_COM_BO_STR-WRKC_RGEKZ sy-vline 
WA_MPES_RTGV_OAC_COM_BO_STR-IS_BACKFLUSHED sy-vline 
WA_MPES_RTGV_OAC_COM_BO_STR-QUANTITY sy-vline 
WA_MPES_RTGV_OAC_COM_BO_STR-BASE_UOM sy-vline 
WA_MPES_RTGV_OAC_COM_BO_STR-IS_OUTPUT sy-vline 
WA_MPES_RTGV_OAC_COM_BO_STR-SEQUENCE_NO sy-vline 
WA_MPES_RTGV_OAC_COM_BO_STR-INSTANCE_ASSEMBLY_RQD sy-vline 
WA_MPES_RTGV_OAC_COM_BO_STR-LOG_COMP_COUNTER sy-vline 
WA_MPES_RTGV_OAC_COM_BO_STR-LOG_COMP sy-vline 
WA_MPES_RTGV_OAC_COM_BO_STR-CREATED_BY sy-vline 
WA_MPES_RTGV_OAC_COM_BO_STR-CREATED_AT sy-vline 
WA_MPES_RTGV_OAC_COM_BO_STR-CHANGED_BY sy-vline 
WA_MPES_RTGV_OAC_COM_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.