ABAP Select data from SAP table ISU_BI_MDATA_ALL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISU_BI_MDATA_ALL
*  INTO TABLE @DATA(IT_ISU_BI_MDATA_ALL2).
*--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_ISU_BI_MDATA_ALL INDEX 1 INTO DATA(WA_ISU_BI_MDATA_ALL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISU_BI_MDATA_ALL>-IETRF = 1.
<ISU_BI_MDATA_ALL>-IETRFT = 1.
<ISU_BI_MDATA_ALL>-IETRFV = 1.
<ISU_BI_MDATA_ALL>-IEKDI = 1.
<ISU_BI_MDATA_ALL>-IETTA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISU_BI_MDATA_ALL-IETTAF, sy-vline,
  WA_ISU_BI_MDATA_ALL-IETTAT, sy-vline,
  WA_ISU_BI_MDATA_ALL-IESCH, sy-vline,
  WA_ISU_BI_MDATA_ALL-IESCHS, sy-vline,
  WA_ISU_BI_MDATA_ALL-IESCHT, sy-vline,
  WA_ISU_BI_MDATA_ALL-IERTFND, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISU_BI_MDATA_ALL 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_ISU_BI_MDATA_ALL 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_ISU_BI_MDATA_ALL INTO WA_ISU_BI_MDATA_ALL.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_ISU_BI_MDATA_ALL_STR, 
IETRF TYPE STRING,
IETRFT TYPE STRING,
IETRFV TYPE STRING,
IEKDI TYPE STRING,
IETTA TYPE STRING,
IETTAF TYPE STRING,
IETTAT TYPE STRING,
IESCH TYPE STRING,
IESCHS TYPE STRING,
IESCHT TYPE STRING,
IERTFND TYPE STRING,
ITE221 TYPE STRING,
ITE221T TYPE STRING,
IEPREIT TYPE STRING,
IEPREI TYPE STRING,
IEPREIH TYPE STRING,
IEPRESCL TYPE STRING,
IEPRESCLH TYPE STRING,
IEPRESCLT TYPE STRING,
IEDSCH TYPE STRING,
IEDSCT TYPE STRING,
IEDSC TYPE STRING,
IEDSCHINDEXA TYPE STRING,
KEYS TYPE STRING,
ITARIFTYP TYPE STRING,
ITARIFFND TYPE STRING,
ISCHEMANR TYPE STRING,
ITARIFNR TYPE STRING,
IOPERAND TYPE STRING,
IPREIS TYPE STRING,
IDISC TYPE STRING,
IPREIGKL TYPE STRING,
IPREISTUF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISU_BI_MDATA_ALL_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_ISU_BI_MDATA_ALL_STR-IETRF sy-vline 
WA_ISU_BI_MDATA_ALL_STR-IETRFT sy-vline 
WA_ISU_BI_MDATA_ALL_STR-IETRFV sy-vline 
WA_ISU_BI_MDATA_ALL_STR-IEKDI sy-vline 
WA_ISU_BI_MDATA_ALL_STR-IETTA sy-vline 
WA_ISU_BI_MDATA_ALL_STR-IETTAF sy-vline 
WA_ISU_BI_MDATA_ALL_STR-IETTAT sy-vline 
WA_ISU_BI_MDATA_ALL_STR-IESCH sy-vline 
WA_ISU_BI_MDATA_ALL_STR-IESCHS sy-vline 
WA_ISU_BI_MDATA_ALL_STR-IESCHT sy-vline 
WA_ISU_BI_MDATA_ALL_STR-IERTFND sy-vline 
WA_ISU_BI_MDATA_ALL_STR-ITE221 sy-vline 
WA_ISU_BI_MDATA_ALL_STR-ITE221T sy-vline 
WA_ISU_BI_MDATA_ALL_STR-IEPREIT sy-vline 
WA_ISU_BI_MDATA_ALL_STR-IEPREI sy-vline 
WA_ISU_BI_MDATA_ALL_STR-IEPREIH sy-vline 
WA_ISU_BI_MDATA_ALL_STR-IEPRESCL sy-vline 
WA_ISU_BI_MDATA_ALL_STR-IEPRESCLH sy-vline 
WA_ISU_BI_MDATA_ALL_STR-IEPRESCLT sy-vline 
WA_ISU_BI_MDATA_ALL_STR-IEDSCH sy-vline 
WA_ISU_BI_MDATA_ALL_STR-IEDSCT sy-vline 
WA_ISU_BI_MDATA_ALL_STR-IEDSC sy-vline 
WA_ISU_BI_MDATA_ALL_STR-IEDSCHINDEXA sy-vline 
WA_ISU_BI_MDATA_ALL_STR-KEYS sy-vline 
WA_ISU_BI_MDATA_ALL_STR-ITARIFTYP sy-vline 
WA_ISU_BI_MDATA_ALL_STR-ITARIFFND sy-vline 
WA_ISU_BI_MDATA_ALL_STR-ISCHEMANR sy-vline 
WA_ISU_BI_MDATA_ALL_STR-ITARIFNR sy-vline 
WA_ISU_BI_MDATA_ALL_STR-IOPERAND sy-vline 
WA_ISU_BI_MDATA_ALL_STR-IPREIS sy-vline 
WA_ISU_BI_MDATA_ALL_STR-IDISC sy-vline 
WA_ISU_BI_MDATA_ALL_STR-IPREIGKL sy-vline 
WA_ISU_BI_MDATA_ALL_STR-IPREISTUF sy-vline      INTO ld_text SEPARATED BY SPACE.

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