ABAP Select data from SAP table DMC_S_RTO_MD_OBJECT_DATA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DMC_S_RTO_MD_OBJECT_DATA
*  INTO TABLE @DATA(IT_DMC_S_RTO_MD_OBJECT_DATA2).
*--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_DMC_S_RTO_MD_OBJECT_DATA INDEX 1 INTO DATA(WA_DMC_S_RTO_MD_OBJECT_DATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DMC_S_RTO_MD_OBJECT_DATA>-CONVOBJ_GUID = 1.
<DMC_S_RTO_MD_OBJECT_DATA>-CONVOBJ_IDENT = 1.
<DMC_S_RTO_MD_OBJECT_DATA>-SUBPROJ_IDENT = 1.
<DMC_S_RTO_MD_OBJECT_DATA>-PROJECT_IDENT = 1.
<DMC_S_RTO_MD_OBJECT_DATA>-PROJECT_TYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DMC_S_RTO_MD_OBJECT_DATA-CONFIG_GUID, sy-vline,
  WA_DMC_S_RTO_MD_OBJECT_DATA-MTID, sy-vline,
  WA_DMC_S_RTO_MD_OBJECT_DATA-ALIAS, sy-vline,
  WA_DMC_S_RTO_MD_OBJECT_DATA-SYSID, sy-vline,
  WA_DMC_S_RTO_MD_OBJECT_DATA-FMID, sy-vline,
  WA_DMC_S_RTO_MD_OBJECT_DATA-READING_TYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DMC_S_RTO_MD_OBJECT_DATA 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_DMC_S_RTO_MD_OBJECT_DATA 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_DMC_S_RTO_MD_OBJECT_DATA INTO WA_DMC_S_RTO_MD_OBJECT_DATA.


*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_DMC_S_RTO_MD_OBJECT_DATA_STR, 
CONVOBJ_GUID TYPE STRING,
CONVOBJ_IDENT TYPE STRING,
SUBPROJ_IDENT TYPE STRING,
PROJECT_IDENT TYPE STRING,
PROJECT_TYPE TYPE STRING,
CONFIG_GUID TYPE STRING,
MTID TYPE STRING,
ALIAS TYPE STRING,
SYSID TYPE STRING,
FMID TYPE STRING,
READING_TYPE TYPE STRING,
ACPL_FAE_SEL TYPE STRING,
SELPAR TYPE STRING,
ROOT_STRUCT TYPE STRING,
IS_STRUCTURED_OBJECT TYPE STRING,
SOURCE TYPE STRING,
SOURCE_ID TYPE STRING,
OBJECT_TYPE TYPE STRING,
STRINGS_USED TYPE STRING,
DBCON_NAME TYPE STRING,
DBCON_DBMS TYPE STRING,
REPL_VIEW TYPE STRING,
CLUSTER_GENERIC TYPE STRING,
VIRTUAL_HEADER TYPE STRING,
CONFIG_APPLICATION TYPE STRING,
DATAAG_AVAILABLE TYPE STRING,
DATAAG_FIELDNAME TYPE STRING,
DATAAG_TEMPERATURE TYPE STRING,
DATAAG_TEMP_USED TYPE STRING,
CONSUMER_NR TYPE STRING,
LOGTAB_SEC_INDEX TYPE STRING,
ORIGTAB_PRIMARY_INDEX TYPE STRING,
PACKID TYPE STRING,
ROLLBACK_ACTIVE TYPE STRING,
TCR_ACTIVE TYPE STRING,
ODQ_ALIAS TYPE STRING,
SQLTAB TYPE STRING,
TABCLASS TYPE STRING,
UC_ACTIVE TYPE STRING,
ODQ_REQUEST_ID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DMC_S_RTO_MD_OBJECT_DATA_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_DMC_S_RTO_MD_OBJECT_DATA_STR-CONVOBJ_GUID sy-vline 
WA_DMC_S_RTO_MD_OBJECT_DATA_STR-CONVOBJ_IDENT sy-vline 
WA_DMC_S_RTO_MD_OBJECT_DATA_STR-SUBPROJ_IDENT sy-vline 
WA_DMC_S_RTO_MD_OBJECT_DATA_STR-PROJECT_IDENT sy-vline 
WA_DMC_S_RTO_MD_OBJECT_DATA_STR-PROJECT_TYPE sy-vline 
WA_DMC_S_RTO_MD_OBJECT_DATA_STR-CONFIG_GUID sy-vline 
WA_DMC_S_RTO_MD_OBJECT_DATA_STR-MTID sy-vline 
WA_DMC_S_RTO_MD_OBJECT_DATA_STR-ALIAS sy-vline 
WA_DMC_S_RTO_MD_OBJECT_DATA_STR-SYSID sy-vline 
WA_DMC_S_RTO_MD_OBJECT_DATA_STR-FMID sy-vline 
WA_DMC_S_RTO_MD_OBJECT_DATA_STR-READING_TYPE sy-vline 
WA_DMC_S_RTO_MD_OBJECT_DATA_STR-ACPL_FAE_SEL sy-vline 
WA_DMC_S_RTO_MD_OBJECT_DATA_STR-SELPAR sy-vline 
WA_DMC_S_RTO_MD_OBJECT_DATA_STR-ROOT_STRUCT sy-vline 
WA_DMC_S_RTO_MD_OBJECT_DATA_STR-IS_STRUCTURED_OBJECT sy-vline 
WA_DMC_S_RTO_MD_OBJECT_DATA_STR-SOURCE sy-vline 
WA_DMC_S_RTO_MD_OBJECT_DATA_STR-SOURCE_ID sy-vline 
WA_DMC_S_RTO_MD_OBJECT_DATA_STR-OBJECT_TYPE sy-vline 
WA_DMC_S_RTO_MD_OBJECT_DATA_STR-STRINGS_USED sy-vline 
WA_DMC_S_RTO_MD_OBJECT_DATA_STR-DBCON_NAME sy-vline 
WA_DMC_S_RTO_MD_OBJECT_DATA_STR-DBCON_DBMS sy-vline 
WA_DMC_S_RTO_MD_OBJECT_DATA_STR-REPL_VIEW sy-vline 
WA_DMC_S_RTO_MD_OBJECT_DATA_STR-CLUSTER_GENERIC sy-vline 
WA_DMC_S_RTO_MD_OBJECT_DATA_STR-VIRTUAL_HEADER sy-vline 
WA_DMC_S_RTO_MD_OBJECT_DATA_STR-CONFIG_APPLICATION sy-vline 
WA_DMC_S_RTO_MD_OBJECT_DATA_STR-DATAAG_AVAILABLE sy-vline 
WA_DMC_S_RTO_MD_OBJECT_DATA_STR-DATAAG_FIELDNAME sy-vline 
WA_DMC_S_RTO_MD_OBJECT_DATA_STR-DATAAG_TEMPERATURE sy-vline 
WA_DMC_S_RTO_MD_OBJECT_DATA_STR-DATAAG_TEMP_USED sy-vline 
WA_DMC_S_RTO_MD_OBJECT_DATA_STR-CONSUMER_NR sy-vline 
WA_DMC_S_RTO_MD_OBJECT_DATA_STR-LOGTAB_SEC_INDEX sy-vline 
WA_DMC_S_RTO_MD_OBJECT_DATA_STR-ORIGTAB_PRIMARY_INDEX sy-vline 
WA_DMC_S_RTO_MD_OBJECT_DATA_STR-PACKID sy-vline 
WA_DMC_S_RTO_MD_OBJECT_DATA_STR-ROLLBACK_ACTIVE sy-vline 
WA_DMC_S_RTO_MD_OBJECT_DATA_STR-TCR_ACTIVE sy-vline 
WA_DMC_S_RTO_MD_OBJECT_DATA_STR-ODQ_ALIAS sy-vline 
WA_DMC_S_RTO_MD_OBJECT_DATA_STR-SQLTAB sy-vline 
WA_DMC_S_RTO_MD_OBJECT_DATA_STR-TABCLASS sy-vline 
WA_DMC_S_RTO_MD_OBJECT_DATA_STR-UC_ACTIVE sy-vline 
WA_DMC_S_RTO_MD_OBJECT_DATA_STR-ODQ_REQUEST_ID sy-vline      INTO ld_text SEPARATED BY SPACE.

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