ABAP Select data from SAP table ROIU_PR_MPVD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ROIU_PR_MPVD
*  INTO TABLE @DATA(IT_ROIU_PR_MPVD2).
*--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_ROIU_PR_MPVD INDEX 1 INTO DATA(WA_ROIU_PR_MPVD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ROIU_PR_MPVD>-MANDT = 1.
<ROIU_PR_MPVD>-MP_NO = 1.
<ROIU_PR_MPVD>-EFF_FROM_DT = 1.
<ROIU_PR_MPVD>-EFF_TO_DT = 1.
<ROIU_PR_MPVD>-HVCLS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ROIU_PR_MPVD-CRUD_TYPE_CD, sy-vline,
  WA_ROIU_PR_MPVD-SA_PT_FL, sy-vline,
  WA_ROIU_PR_MPVD-INACTIVE_FL, sy-vline,
  WA_ROIU_PR_MPVD-OP_FL, sy-vline,
  WA_ROIU_PR_MPVD-SAT_DRY_CD, sy-vline,
  WA_ROIU_PR_MPVD-INTRA_NWK_FL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ROIU_PR_MPVD 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_ROIU_PR_MPVD 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_ROIU_PR_MPVD INTO WA_ROIU_PR_MPVD.


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

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

*Conversion exit ALPHA, internal->external for field REF_MP_NO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ROIU_PR_MPVD-REF_MP_NO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIU_PR_MPVD-REF_MP_NO.
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_ROIU_PR_MPVD_STR, 
MANDT TYPE STRING,
MP_NO TYPE STRING,
EFF_FROM_DT TYPE STRING,
EFF_TO_DT TYPE STRING,
HVCLS TYPE STRING,
CRUD_TYPE_CD TYPE STRING,
SA_PT_FL TYPE STRING,
INACTIVE_FL TYPE STRING,
OP_FL TYPE STRING,
SAT_DRY_CD TYPE STRING,
INTRA_NWK_FL TYPE STRING,
PLT_INLET_FL TYPE STRING,
STRM_TYPE_CD TYPE STRING,
STRM_DFLT_FL TYPE STRING,
RLF_USAGE_FL TYPE STRING,
COMPANY_CODE TYPE STRING,
COST_CENTER TYPE STRING,
CHRT_TYP_CD TYPE STRING,
OIU_CRUSER TYPE STRING,
OIU_TIMESTAMP TYPE STRING,
PIPL_OPEN_PD TYPE STRING,
XXDBACTION TYPE STRING,
MP_DE TYPE STRING,
MP_SHTXT TYPE STRING,
TYPE_CD TYPE STRING,
MP_TYPE_DE TYPE STRING,
STRM_TYP_DE TYPE STRING,
HVCLS_DE TYPE STRING,
CHRT_TYPE_DE TYPE STRING,
CRTYP_DE TYPE STRING,
MAKTX TYPE STRING,
BUTXT TYPE STRING,
KOSTL_TEXT TYPE STRING,
SAT_DRY_DE TYPE STRING,
REF_MP_NO TYPE STRING,
REF_MP_DE TYPE STRING,
REF_MP_SHTXT TYPE STRING,
REF_EFF_FROM_DT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ROIU_PR_MPVD_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_ROIU_PR_MPVD_STR-MANDT sy-vline 
WA_ROIU_PR_MPVD_STR-MP_NO sy-vline 
WA_ROIU_PR_MPVD_STR-EFF_FROM_DT sy-vline 
WA_ROIU_PR_MPVD_STR-EFF_TO_DT sy-vline 
WA_ROIU_PR_MPVD_STR-HVCLS sy-vline 
WA_ROIU_PR_MPVD_STR-CRUD_TYPE_CD sy-vline 
WA_ROIU_PR_MPVD_STR-SA_PT_FL sy-vline 
WA_ROIU_PR_MPVD_STR-INACTIVE_FL sy-vline 
WA_ROIU_PR_MPVD_STR-OP_FL sy-vline 
WA_ROIU_PR_MPVD_STR-SAT_DRY_CD sy-vline 
WA_ROIU_PR_MPVD_STR-INTRA_NWK_FL sy-vline 
WA_ROIU_PR_MPVD_STR-PLT_INLET_FL sy-vline 
WA_ROIU_PR_MPVD_STR-STRM_TYPE_CD sy-vline 
WA_ROIU_PR_MPVD_STR-STRM_DFLT_FL sy-vline 
WA_ROIU_PR_MPVD_STR-RLF_USAGE_FL sy-vline 
WA_ROIU_PR_MPVD_STR-COMPANY_CODE sy-vline 
WA_ROIU_PR_MPVD_STR-COST_CENTER sy-vline 
WA_ROIU_PR_MPVD_STR-CHRT_TYP_CD sy-vline 
WA_ROIU_PR_MPVD_STR-OIU_CRUSER sy-vline 
WA_ROIU_PR_MPVD_STR-OIU_TIMESTAMP sy-vline 
WA_ROIU_PR_MPVD_STR-PIPL_OPEN_PD sy-vline 
WA_ROIU_PR_MPVD_STR-XXDBACTION sy-vline 
WA_ROIU_PR_MPVD_STR-MP_DE sy-vline 
WA_ROIU_PR_MPVD_STR-MP_SHTXT sy-vline 
WA_ROIU_PR_MPVD_STR-TYPE_CD sy-vline 
WA_ROIU_PR_MPVD_STR-MP_TYPE_DE sy-vline 
WA_ROIU_PR_MPVD_STR-STRM_TYP_DE sy-vline 
WA_ROIU_PR_MPVD_STR-HVCLS_DE sy-vline 
WA_ROIU_PR_MPVD_STR-CHRT_TYPE_DE sy-vline 
WA_ROIU_PR_MPVD_STR-CRTYP_DE sy-vline 
WA_ROIU_PR_MPVD_STR-MAKTX sy-vline 
WA_ROIU_PR_MPVD_STR-BUTXT sy-vline 
WA_ROIU_PR_MPVD_STR-KOSTL_TEXT sy-vline 
WA_ROIU_PR_MPVD_STR-SAT_DRY_DE sy-vline 
WA_ROIU_PR_MPVD_STR-REF_MP_NO sy-vline 
WA_ROIU_PR_MPVD_STR-REF_MP_DE sy-vline 
WA_ROIU_PR_MPVD_STR-REF_MP_SHTXT sy-vline 
WA_ROIU_PR_MPVD_STR-REF_EFF_FROM_DT sy-vline      INTO ld_text SEPARATED BY SPACE.

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