ABAP Select data from SAP table CNVOM_S_DMC_STREE_DEEP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CNVOM_S_DMC_STREE_DEEP
*  INTO TABLE @DATA(IT_CNVOM_S_DMC_STREE_DEEP2).
*--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_CNVOM_S_DMC_STREE_DEEP INDEX 1 INTO DATA(WA_CNVOM_S_DMC_STREE_DEEP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CNVOM_S_DMC_STREE_DEEP>-GUID = 1.
<CNVOM_S_DMC_STREE_DEEP>-CONTAINER = 1.
<CNVOM_S_DMC_STREE_DEEP>-STYPE = 1.
<CNVOM_S_DMC_STREE_DEEP>-SEQNUM = 1.
<CNVOM_S_DMC_STREE_DEEP>-IDENT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CNVOM_S_DMC_STREE_DEEP-STRUCT, sy-vline,
  WA_CNVOM_S_DMC_STREE_DEEP-FILEDESC, sy-vline,
  WA_CNVOM_S_DMC_STREE_DEEP-PREC, sy-vline,
  WA_CNVOM_S_DMC_STREE_DEEP-VERSIO, sy-vline,
  WA_CNVOM_S_DMC_STREE_DEEP-CHNAM, sy-vline,
  WA_CNVOM_S_DMC_STREE_DEEP-STRUCLEVEL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CNVOM_S_DMC_STREE_DEEP 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_CNVOM_S_DMC_STREE_DEEP 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_CNVOM_S_DMC_STREE_DEEP INTO WA_CNVOM_S_DMC_STREE_DEEP.


*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_CNVOM_S_DMC_STREE_DEEP_STR, 
GUID TYPE STRING,
CONTAINER TYPE STRING,
STYPE TYPE STRING,
SEQNUM TYPE STRING,
IDENT TYPE STRING,
STRUCT TYPE STRING,
FILEDESC TYPE STRING,
PREC TYPE STRING,
VERSIO TYPE STRING,
CHNAM TYPE STRING,
STRUCLEVEL TYPE STRING,
PARENTID TYPE STRING,
CHANGEDATE TYPE STRING,
AUTHOR TYPE STRING,
CREATEDATE TYPE STRING,
DESCR TYPE STRING,
REFNAME TYPE STRING,
STREE_TYPE TYPE STRING,
TAB_STRUCT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CNVOM_S_DMC_STREE_DEEP_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_CNVOM_S_DMC_STREE_DEEP_STR-GUID sy-vline 
WA_CNVOM_S_DMC_STREE_DEEP_STR-CONTAINER sy-vline 
WA_CNVOM_S_DMC_STREE_DEEP_STR-STYPE sy-vline 
WA_CNVOM_S_DMC_STREE_DEEP_STR-SEQNUM sy-vline 
WA_CNVOM_S_DMC_STREE_DEEP_STR-IDENT sy-vline 
WA_CNVOM_S_DMC_STREE_DEEP_STR-STRUCT sy-vline 
WA_CNVOM_S_DMC_STREE_DEEP_STR-FILEDESC sy-vline 
WA_CNVOM_S_DMC_STREE_DEEP_STR-PREC sy-vline 
WA_CNVOM_S_DMC_STREE_DEEP_STR-VERSIO sy-vline 
WA_CNVOM_S_DMC_STREE_DEEP_STR-CHNAM sy-vline 
WA_CNVOM_S_DMC_STREE_DEEP_STR-STRUCLEVEL sy-vline 
WA_CNVOM_S_DMC_STREE_DEEP_STR-PARENTID sy-vline 
WA_CNVOM_S_DMC_STREE_DEEP_STR-CHANGEDATE sy-vline 
WA_CNVOM_S_DMC_STREE_DEEP_STR-AUTHOR sy-vline 
WA_CNVOM_S_DMC_STREE_DEEP_STR-CREATEDATE sy-vline 
WA_CNVOM_S_DMC_STREE_DEEP_STR-DESCR sy-vline 
WA_CNVOM_S_DMC_STREE_DEEP_STR-REFNAME sy-vline 
WA_CNVOM_S_DMC_STREE_DEEP_STR-STREE_TYPE sy-vline 
WA_CNVOM_S_DMC_STREE_DEEP_STR-TAB_STRUCT sy-vline      INTO ld_text SEPARATED BY SPACE.

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