ABAP Select data from SAP table MPES_RTGV_OPR_OAN 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_OPR_OAN 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_OPR_OAN. 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_OPR_OAN 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_OPR_OAN TYPE STANDARD TABLE OF MPES_RTGV_OPR_OAN,
      WA_MPES_RTGV_OPR_OAN TYPE MPES_RTGV_OPR_OAN,
      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_OPR_OAN> TYPE MPES_RTGV_OPR_OAN.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MPES_RTGV_OPR_OAN
*  INTO TABLE @DATA(IT_MPES_RTGV_OPR_OAN2).
*--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_OPR_OAN INDEX 1 INTO DATA(WA_MPES_RTGV_OPR_OAN2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MPES_RTGV_OPR_OAN-COUNTER, sy-vline,
  WA_MPES_RTGV_OPR_OAN-VERSN, sy-vline,
  WA_MPES_RTGV_OPR_OAN-SET_VERSN_TRACK_GUID, sy-vline,
  WA_MPES_RTGV_OPR_OAN-OAN_ID_SETUP, sy-vline,
  WA_MPES_RTGV_OPR_OAN-OAN_VERSION_SETUP, sy-vline,
  WA_MPES_RTGV_OPR_OAN-OAN_ID_PRODUCE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MPES_RTGV_OPR_OAN 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_OPR_OAN 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_OPR_OAN INTO WA_MPES_RTGV_OPR_OAN.


*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_OPR_OAN-PLNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPES_RTGV_OPR_OAN-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_OPR_OAN-PLNAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPES_RTGV_OPR_OAN-PLNAL.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field PLNFL_REFT_OLD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MPES_RTGV_OPR_OAN-PLNFL_REFT_OLD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPES_RTGV_OPR_OAN-PLNFL_REFT_OLD.
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_OPR_OAN_STR, 
PLNTY TYPE STRING,
PLNNR TYPE STRING,
PLNAL TYPE STRING,
PLNFL TYPE STRING,
PLNKN TYPE STRING,
COUNTER TYPE STRING,
VERSN TYPE STRING,
SET_VERSN_TRACK_GUID TYPE STRING,
OAN_ID_SETUP TYPE STRING,
OAN_VERSION_SETUP TYPE STRING,
OAN_ID_PRODUCE TYPE STRING,
OAN_VERSION_PRODUCE TYPE STRING,
OAN_ID_TEARDOWN TYPE STRING,
OAN_VERSION_TEARDOWN TYPE STRING,
PLNTY_REFT TYPE STRING,
PLNNR_REFT TYPE STRING,
PLNAL_REFT TYPE STRING,
VERSN_REFT TYPE STRING,
PLNFL_REFT TYPE STRING,
PLNKN_REFT TYPE STRING,
PLNTY_REFT_OLD TYPE STRING,
PLNNR_REFT_OLD TYPE STRING,
PLNAL_REFT_OLD TYPE STRING,
VERSN_REFT_OLD TYPE STRING,
PLNFL_REFT_OLD TYPE STRING,
PLNKN_REFT_OLD TYPE STRING,
HAS_BUYOFF TYPE STRING,
HAS_LCOMP TYPE STRING,
HAS_QUALIF TYPE STRING,
HAS_WORKINSTR TYPE STRING,
HAS_PREDECESSORS TYPE STRING,
HAS_SUCCESSORS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MPES_RTGV_OPR_OAN_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_OPR_OAN_STR-PLNTY sy-vline 
WA_MPES_RTGV_OPR_OAN_STR-PLNNR sy-vline 
WA_MPES_RTGV_OPR_OAN_STR-PLNAL sy-vline 
WA_MPES_RTGV_OPR_OAN_STR-PLNFL sy-vline 
WA_MPES_RTGV_OPR_OAN_STR-PLNKN sy-vline 
WA_MPES_RTGV_OPR_OAN_STR-COUNTER sy-vline 
WA_MPES_RTGV_OPR_OAN_STR-VERSN sy-vline 
WA_MPES_RTGV_OPR_OAN_STR-SET_VERSN_TRACK_GUID sy-vline 
WA_MPES_RTGV_OPR_OAN_STR-OAN_ID_SETUP sy-vline 
WA_MPES_RTGV_OPR_OAN_STR-OAN_VERSION_SETUP sy-vline 
WA_MPES_RTGV_OPR_OAN_STR-OAN_ID_PRODUCE sy-vline 
WA_MPES_RTGV_OPR_OAN_STR-OAN_VERSION_PRODUCE sy-vline 
WA_MPES_RTGV_OPR_OAN_STR-OAN_ID_TEARDOWN sy-vline 
WA_MPES_RTGV_OPR_OAN_STR-OAN_VERSION_TEARDOWN sy-vline 
WA_MPES_RTGV_OPR_OAN_STR-PLNTY_REFT sy-vline 
WA_MPES_RTGV_OPR_OAN_STR-PLNNR_REFT sy-vline 
WA_MPES_RTGV_OPR_OAN_STR-PLNAL_REFT sy-vline 
WA_MPES_RTGV_OPR_OAN_STR-VERSN_REFT sy-vline 
WA_MPES_RTGV_OPR_OAN_STR-PLNFL_REFT sy-vline 
WA_MPES_RTGV_OPR_OAN_STR-PLNKN_REFT sy-vline 
WA_MPES_RTGV_OPR_OAN_STR-PLNTY_REFT_OLD sy-vline 
WA_MPES_RTGV_OPR_OAN_STR-PLNNR_REFT_OLD sy-vline 
WA_MPES_RTGV_OPR_OAN_STR-PLNAL_REFT_OLD sy-vline 
WA_MPES_RTGV_OPR_OAN_STR-VERSN_REFT_OLD sy-vline 
WA_MPES_RTGV_OPR_OAN_STR-PLNFL_REFT_OLD sy-vline 
WA_MPES_RTGV_OPR_OAN_STR-PLNKN_REFT_OLD sy-vline 
WA_MPES_RTGV_OPR_OAN_STR-HAS_BUYOFF sy-vline 
WA_MPES_RTGV_OPR_OAN_STR-HAS_LCOMP sy-vline 
WA_MPES_RTGV_OPR_OAN_STR-HAS_QUALIF sy-vline 
WA_MPES_RTGV_OPR_OAN_STR-HAS_WORKINSTR sy-vline 
WA_MPES_RTGV_OPR_OAN_STR-HAS_PREDECESSORS sy-vline 
WA_MPES_RTGV_OPR_OAN_STR-HAS_SUCCESSORS sy-vline      INTO ld_text SEPARATED BY SPACE.

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