ABAP Select data from SAP table ROIUP_INVOLVED_TABLES into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ROIUP_INVOLVED_TABLES
*  INTO TABLE @DATA(IT_ROIUP_INVOLVED_TABLES2).
*--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_ROIUP_INVOLVED_TABLES INDEX 1 INTO DATA(WA_ROIUP_INVOLVED_TABLES2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ROIUP_INVOLVED_TABLES>-TABNAME = 1.
<ROIUP_INVOLVED_TABLES>-ENABLED = 1.
<ROIUP_INVOLVED_TABLES>-MANDT = 1.
<ROIUP_INVOLVED_TABLES>-PRA_TABNAME = 1.
<ROIUP_INVOLVED_TABLES>-APP_AREA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ROIUP_INVOLVED_TABLES-PRA_ITABTYPE, sy-vline,
  WA_ROIUP_INVOLVED_TABLES-PRA_SPLIT_FIELD, sy-vline,
  WA_ROIUP_INVOLVED_TABLES-CONVERSION_CLASS, sy-vline,
  WA_ROIUP_INVOLVED_TABLES-DEPENDENT_ON_CLS, sy-vline,
  WA_ROIUP_INVOLVED_TABLES-DEPENDENT_CLASS, sy-vline,
  WA_ROIUP_INVOLVED_TABLES-SHADOW_TABNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ROIUP_INVOLVED_TABLES 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_ROIUP_INVOLVED_TABLES 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_ROIUP_INVOLVED_TABLES INTO WA_ROIUP_INVOLVED_TABLES.


*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_ROIUP_INVOLVED_TABLES_STR, 
TABNAME TYPE STRING,
ENABLED TYPE STRING,
MANDT TYPE STRING,
PRA_TABNAME TYPE STRING,
APP_AREA TYPE STRING,
PRA_ITABTYPE TYPE STRING,
PRA_SPLIT_FIELD TYPE STRING,
CONVERSION_CLASS TYPE STRING,
DEPENDENT_ON_CLS TYPE STRING,
DEPENDENT_CLASS TYPE STRING,
SHADOW_TABNAME TYPE STRING,
SHADOW_ITABTYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ROIUP_INVOLVED_TABLES_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_ROIUP_INVOLVED_TABLES_STR-TABNAME sy-vline 
WA_ROIUP_INVOLVED_TABLES_STR-ENABLED sy-vline 
WA_ROIUP_INVOLVED_TABLES_STR-MANDT sy-vline 
WA_ROIUP_INVOLVED_TABLES_STR-PRA_TABNAME sy-vline 
WA_ROIUP_INVOLVED_TABLES_STR-APP_AREA sy-vline 
WA_ROIUP_INVOLVED_TABLES_STR-PRA_ITABTYPE sy-vline 
WA_ROIUP_INVOLVED_TABLES_STR-PRA_SPLIT_FIELD sy-vline 
WA_ROIUP_INVOLVED_TABLES_STR-CONVERSION_CLASS sy-vline 
WA_ROIUP_INVOLVED_TABLES_STR-DEPENDENT_ON_CLS sy-vline 
WA_ROIUP_INVOLVED_TABLES_STR-DEPENDENT_CLASS sy-vline 
WA_ROIUP_INVOLVED_TABLES_STR-SHADOW_TABNAME sy-vline 
WA_ROIUP_INVOLVED_TABLES_STR-SHADOW_ITABTYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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