ABAP Select data from SAP table MPES_RTGV_PROD_VERS 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_PROD_VERS 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_PROD_VERS. 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_PROD_VERS 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_PROD_VERS TYPE STANDARD TABLE OF MPES_RTGV_PROD_VERS,
      WA_MPES_RTGV_PROD_VERS TYPE MPES_RTGV_PROD_VERS,
      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_PROD_VERS> TYPE MPES_RTGV_PROD_VERS.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MPES_RTGV_PROD_VERS
*  INTO TABLE @DATA(IT_MPES_RTGV_PROD_VERS2).
*--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_PROD_VERS INDEX 1 INTO DATA(WA_MPES_RTGV_PROD_VERS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MPES_RTGV_PROD_VERS>-GUID = 1.
<MPES_RTGV_PROD_VERS>-MATNR = 1.
<MPES_RTGV_PROD_VERS>-WERKS = 1.
<MPES_RTGV_PROD_VERS>-VERID = 1.
<MPES_RTGV_PROD_VERS>-TEXT1 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MPES_RTGV_PROD_VERS-PLNTY, sy-vline,
  WA_MPES_RTGV_PROD_VERS-PLNNR, sy-vline,
  WA_MPES_RTGV_PROD_VERS-ALNAL, sy-vline,
  WA_MPES_RTGV_PROD_VERS-STLTY, sy-vline,
  WA_MPES_RTGV_PROD_VERS-STLAN, sy-vline,
  WA_MPES_RTGV_PROD_VERS-STLNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MPES_RTGV_PROD_VERS 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_PROD_VERS 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_PROD_VERS INTO WA_MPES_RTGV_PROD_VERS.


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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field EXE_ALNAL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MPES_RTGV_PROD_VERS-EXE_ALNAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPES_RTGV_PROD_VERS-EXE_ALNAL.
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_PROD_VERS_STR, 
GUID TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
VERID TYPE STRING,
TEXT1 TYPE STRING,
PLNTY TYPE STRING,
PLNNR TYPE STRING,
ALNAL TYPE STRING,
STLTY TYPE STRING,
STLAN TYPE STRING,
STLNR TYPE STRING,
STLAL TYPE STRING,
BSTMI TYPE STRING,
BSTMA TYPE STRING,
ADATU TYPE STRING,
BDATU TYPE STRING,
MKSP TYPE STRING,
ASSIGNED TYPE STRING,
EXE_STLTY TYPE STRING,
EXE_STLAN TYPE STRING,
EXE_STLNR TYPE STRING,
EXE_STLAL TYPE STRING,
EXE_PLNTY TYPE STRING,
EXE_PLNNR TYPE STRING,
EXE_ALNAL TYPE STRING,
DRAFT_GUID TYPE STRING,
DIFFPLANEXEMSTR TYPE STRING,
STLAN_TEXT TYPE STRING,
EXE_STLAN_TEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MPES_RTGV_PROD_VERS_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_PROD_VERS_STR-GUID sy-vline 
WA_MPES_RTGV_PROD_VERS_STR-MATNR sy-vline 
WA_MPES_RTGV_PROD_VERS_STR-WERKS sy-vline 
WA_MPES_RTGV_PROD_VERS_STR-VERID sy-vline 
WA_MPES_RTGV_PROD_VERS_STR-TEXT1 sy-vline 
WA_MPES_RTGV_PROD_VERS_STR-PLNTY sy-vline 
WA_MPES_RTGV_PROD_VERS_STR-PLNNR sy-vline 
WA_MPES_RTGV_PROD_VERS_STR-ALNAL sy-vline 
WA_MPES_RTGV_PROD_VERS_STR-STLTY sy-vline 
WA_MPES_RTGV_PROD_VERS_STR-STLAN sy-vline 
WA_MPES_RTGV_PROD_VERS_STR-STLNR sy-vline 
WA_MPES_RTGV_PROD_VERS_STR-STLAL sy-vline 
WA_MPES_RTGV_PROD_VERS_STR-BSTMI sy-vline 
WA_MPES_RTGV_PROD_VERS_STR-BSTMA sy-vline 
WA_MPES_RTGV_PROD_VERS_STR-ADATU sy-vline 
WA_MPES_RTGV_PROD_VERS_STR-BDATU sy-vline 
WA_MPES_RTGV_PROD_VERS_STR-MKSP sy-vline 
WA_MPES_RTGV_PROD_VERS_STR-ASSIGNED sy-vline 
WA_MPES_RTGV_PROD_VERS_STR-EXE_STLTY sy-vline 
WA_MPES_RTGV_PROD_VERS_STR-EXE_STLAN sy-vline 
WA_MPES_RTGV_PROD_VERS_STR-EXE_STLNR sy-vline 
WA_MPES_RTGV_PROD_VERS_STR-EXE_STLAL sy-vline 
WA_MPES_RTGV_PROD_VERS_STR-EXE_PLNTY sy-vline 
WA_MPES_RTGV_PROD_VERS_STR-EXE_PLNNR sy-vline 
WA_MPES_RTGV_PROD_VERS_STR-EXE_ALNAL sy-vline 
WA_MPES_RTGV_PROD_VERS_STR-DRAFT_GUID sy-vline 
WA_MPES_RTGV_PROD_VERS_STR-DIFFPLANEXEMSTR sy-vline 
WA_MPES_RTGV_PROD_VERS_STR-STLAN_TEXT sy-vline 
WA_MPES_RTGV_PROD_VERS_STR-EXE_STLAN_TEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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