ABAP Select data from SAP table ROIUPR_MPCO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ROIUPR_MPCO
*  INTO TABLE @DATA(IT_ROIUPR_MPCO2).
*--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_ROIUPR_MPCO INDEX 1 INTO DATA(WA_ROIUPR_MPCO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ROIUPR_MPCO>-MP_NO = 1.
<ROIUPR_MPCO>-GPLT_CMPNT_CD = 1.
<ROIUPR_MPCO>-MP_TYPE_CD = 1.
<ROIUPR_MPCO>-RLF_USAGE_FL = 1.
<ROIUPR_MPCO>-HLD_ADJ_MTR_QY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ROIUPR_MPCO-DSTRM_PROD_MP, sy-vline,
  WA_ROIUPR_MPCO-UPSTRM_MTR_CNFIG, sy-vline,
  WA_ROIUPR_MPCO-MP_PREV_SUM_WL, sy-vline,
  WA_ROIUPR_MPCO-DWN_SUM_FL, sy-vline,
  WA_ROIUPR_MPCO-DWN_DED_REM_FL, sy-vline,
  WA_ROIUPR_MPCO-HAS_MEAS_PROD_FL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ROIUPR_MPCO 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_ROIUPR_MPCO 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_ROIUPR_MPCO INTO WA_ROIUPR_MPCO.


*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_ROIUPR_MPCO-MP_NO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIUPR_MPCO-MP_NO.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field STD_VOL_U
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ROIUPR_MPCO-STD_VOL_U
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIUPR_MPCO-STD_VOL_U.
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_ROIUPR_MPCO_STR, 
MP_NO TYPE STRING,
GPLT_CMPNT_CD TYPE STRING,
MP_TYPE_CD TYPE STRING,
RLF_USAGE_FL TYPE STRING,
HLD_ADJ_MTR_QY TYPE STRING,
DSTRM_PROD_MP TYPE STRING,
UPSTRM_MTR_CNFIG TYPE STRING,
MP_PREV_SUM_WL TYPE STRING,
DWN_SUM_FL TYPE STRING,
DWN_DED_REM_FL TYPE STRING,
HAS_MEAS_PROD_FL TYPE STRING,
OVR_FL TYPE STRING,
PREV_ALLOC_FL TYPE STRING,
ALLOC_VOL TYPE STRING,
REM_ALLOC_VOL TYPE STRING,
SUM_BEG_INV TYPE STRING,
SUM_REM_BEG_INV TYPE STRING,
STD_VOL_U TYPE STRING,
REM_DEDUCT TYPE STRING,
TOT_DEDUCT TYPE STRING,
SUM_THEO_QY TYPE STRING,
SUM_REM_THEO_QY TYPE STRING,
HLD_SUM_REM_THEO_QY TYPE STRING,
SUM_NET_THEO_QY TYPE STRING,
NET_THEO_QY TYPE STRING,
METERED_QY TYPE STRING,
ADJ_METERED_QY TYPE STRING,
DWN_MTR_QY TYPE STRING,
UP_SPLIT_QY TYPE STRING,
UP_SPLIT_QY_HOLD TYPE STRING,
UP_SPLIT_QY_CALC TYPE STRING,
UP_DEDUCT_MTR_QY TYPE STRING,
VRU_THEO_QY TYPE STRING,
NGL_C1C2TRA_QY TYPE STRING,
SUM_NGL_QY TYPE STRING,
SUM_NGL_MOL_QY TYPE STRING,
TABIX_COTB TYPE STRING,
SUM_THEO_ENERGY TYPE STRING,
METERED_ENERGY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ROIUPR_MPCO_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_ROIUPR_MPCO_STR-MP_NO sy-vline 
WA_ROIUPR_MPCO_STR-GPLT_CMPNT_CD sy-vline 
WA_ROIUPR_MPCO_STR-MP_TYPE_CD sy-vline 
WA_ROIUPR_MPCO_STR-RLF_USAGE_FL sy-vline 
WA_ROIUPR_MPCO_STR-HLD_ADJ_MTR_QY sy-vline 
WA_ROIUPR_MPCO_STR-DSTRM_PROD_MP sy-vline 
WA_ROIUPR_MPCO_STR-UPSTRM_MTR_CNFIG sy-vline 
WA_ROIUPR_MPCO_STR-MP_PREV_SUM_WL sy-vline 
WA_ROIUPR_MPCO_STR-DWN_SUM_FL sy-vline 
WA_ROIUPR_MPCO_STR-DWN_DED_REM_FL sy-vline 
WA_ROIUPR_MPCO_STR-HAS_MEAS_PROD_FL sy-vline 
WA_ROIUPR_MPCO_STR-OVR_FL sy-vline 
WA_ROIUPR_MPCO_STR-PREV_ALLOC_FL sy-vline 
WA_ROIUPR_MPCO_STR-ALLOC_VOL sy-vline 
WA_ROIUPR_MPCO_STR-REM_ALLOC_VOL sy-vline 
WA_ROIUPR_MPCO_STR-SUM_BEG_INV sy-vline 
WA_ROIUPR_MPCO_STR-SUM_REM_BEG_INV sy-vline 
WA_ROIUPR_MPCO_STR-STD_VOL_U sy-vline 
WA_ROIUPR_MPCO_STR-REM_DEDUCT sy-vline 
WA_ROIUPR_MPCO_STR-TOT_DEDUCT sy-vline 
WA_ROIUPR_MPCO_STR-SUM_THEO_QY sy-vline 
WA_ROIUPR_MPCO_STR-SUM_REM_THEO_QY sy-vline 
WA_ROIUPR_MPCO_STR-HLD_SUM_REM_THEO_QY sy-vline 
WA_ROIUPR_MPCO_STR-SUM_NET_THEO_QY sy-vline 
WA_ROIUPR_MPCO_STR-NET_THEO_QY sy-vline 
WA_ROIUPR_MPCO_STR-METERED_QY sy-vline 
WA_ROIUPR_MPCO_STR-ADJ_METERED_QY sy-vline 
WA_ROIUPR_MPCO_STR-DWN_MTR_QY sy-vline 
WA_ROIUPR_MPCO_STR-UP_SPLIT_QY sy-vline 
WA_ROIUPR_MPCO_STR-UP_SPLIT_QY_HOLD sy-vline 
WA_ROIUPR_MPCO_STR-UP_SPLIT_QY_CALC sy-vline 
WA_ROIUPR_MPCO_STR-UP_DEDUCT_MTR_QY sy-vline 
WA_ROIUPR_MPCO_STR-VRU_THEO_QY sy-vline 
WA_ROIUPR_MPCO_STR-NGL_C1C2TRA_QY sy-vline 
WA_ROIUPR_MPCO_STR-SUM_NGL_QY sy-vline 
WA_ROIUPR_MPCO_STR-SUM_NGL_MOL_QY sy-vline 
WA_ROIUPR_MPCO_STR-TABIX_COTB sy-vline 
WA_ROIUPR_MPCO_STR-SUM_THEO_ENERGY sy-vline 
WA_ROIUPR_MPCO_STR-METERED_ENERGY sy-vline      INTO ld_text SEPARATED BY SPACE.

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