ABAP Select data from SAP table DMEE_SYNC_TREE_ITEM_STRUC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DMEE_SYNC_TREE_ITEM_STRUC
*  INTO TABLE @DATA(IT_DMEE_SYNC_TREE_ITEM_STRUC2).
*--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_DMEE_SYNC_TREE_ITEM_STRUC INDEX 1 INTO DATA(WA_DMEE_SYNC_TREE_ITEM_STRUC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DMEE_SYNC_TREE_ITEM_STRUC>-NODE_KEY = 1.
<DMEE_SYNC_TREE_ITEM_STRUC>-ITEM_NAME = 1.
<DMEE_SYNC_TREE_ITEM_STRUC>-CLASS = 1.
<DMEE_SYNC_TREE_ITEM_STRUC>-FONT = 1.
<DMEE_SYNC_TREE_ITEM_STRUC>-DISABLED = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DMEE_SYNC_TREE_ITEM_STRUC-EDITABLE, sy-vline,
  WA_DMEE_SYNC_TREE_ITEM_STRUC-HIDDEN, sy-vline,
  WA_DMEE_SYNC_TREE_ITEM_STRUC-ALIGNMENT, sy-vline,
  WA_DMEE_SYNC_TREE_ITEM_STRUC-T_IMAGE, sy-vline,
  WA_DMEE_SYNC_TREE_ITEM_STRUC-CHOSEN, sy-vline,
  WA_DMEE_SYNC_TREE_ITEM_STRUC-TOGG_RIGHT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DMEE_SYNC_TREE_ITEM_STRUC 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_DMEE_SYNC_TREE_ITEM_STRUC 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_DMEE_SYNC_TREE_ITEM_STRUC INTO WA_DMEE_SYNC_TREE_ITEM_STRUC.


*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 SYSTEM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DMEE_SYNC_TREE_ITEM_STRUC-SYSTEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DMEE_SYNC_TREE_ITEM_STRUC-SYSTEM.
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_DMEE_SYNC_TREE_ITEM_STRUC_STR, 
NODE_KEY TYPE STRING,
ITEM_NAME TYPE STRING,
CLASS TYPE STRING,
FONT TYPE STRING,
DISABLED TYPE STRING,
EDITABLE TYPE STRING,
HIDDEN TYPE STRING,
ALIGNMENT TYPE STRING,
T_IMAGE TYPE STRING,
CHOSEN TYPE STRING,
TOGG_RIGHT TYPE STRING,
STYLE TYPE STRING,
LENGTH TYPE STRING,
LENGTH_PIX TYPE STRING,
IGNOREIMAG TYPE STRING,
USEBGCOLOR TYPE STRING,
TXTISQINFO TYPE STRING,
TEXT TYPE STRING,
LEVEL TYPE STRING,
TYPE TYPE STRING,
ID TYPE STRING,
NUMBER TYPE STRING,
MESSAGE TYPE STRING,
LOG_NO TYPE STRING,
LOG_MSG_NO TYPE STRING,
MESSAGE_V1 TYPE STRING,
MESSAGE_V2 TYPE STRING,
MESSAGE_V3 TYPE STRING,
MESSAGE_V4 TYPE STRING,
PARAMETER TYPE STRING,
ROW TYPE STRING,
FIELD TYPE STRING,
SYSTEM TYPE STRING,
SOURCE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DMEE_SYNC_TREE_ITEM_STRUC_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_DMEE_SYNC_TREE_ITEM_STRUC_STR-NODE_KEY sy-vline 
WA_DMEE_SYNC_TREE_ITEM_STRUC_STR-ITEM_NAME sy-vline 
WA_DMEE_SYNC_TREE_ITEM_STRUC_STR-CLASS sy-vline 
WA_DMEE_SYNC_TREE_ITEM_STRUC_STR-FONT sy-vline 
WA_DMEE_SYNC_TREE_ITEM_STRUC_STR-DISABLED sy-vline 
WA_DMEE_SYNC_TREE_ITEM_STRUC_STR-EDITABLE sy-vline 
WA_DMEE_SYNC_TREE_ITEM_STRUC_STR-HIDDEN sy-vline 
WA_DMEE_SYNC_TREE_ITEM_STRUC_STR-ALIGNMENT sy-vline 
WA_DMEE_SYNC_TREE_ITEM_STRUC_STR-T_IMAGE sy-vline 
WA_DMEE_SYNC_TREE_ITEM_STRUC_STR-CHOSEN sy-vline 
WA_DMEE_SYNC_TREE_ITEM_STRUC_STR-TOGG_RIGHT sy-vline 
WA_DMEE_SYNC_TREE_ITEM_STRUC_STR-STYLE sy-vline 
WA_DMEE_SYNC_TREE_ITEM_STRUC_STR-LENGTH sy-vline 
WA_DMEE_SYNC_TREE_ITEM_STRUC_STR-LENGTH_PIX sy-vline 
WA_DMEE_SYNC_TREE_ITEM_STRUC_STR-IGNOREIMAG sy-vline 
WA_DMEE_SYNC_TREE_ITEM_STRUC_STR-USEBGCOLOR sy-vline 
WA_DMEE_SYNC_TREE_ITEM_STRUC_STR-TXTISQINFO sy-vline 
WA_DMEE_SYNC_TREE_ITEM_STRUC_STR-TEXT sy-vline 
WA_DMEE_SYNC_TREE_ITEM_STRUC_STR-LEVEL sy-vline 
WA_DMEE_SYNC_TREE_ITEM_STRUC_STR-TYPE sy-vline 
WA_DMEE_SYNC_TREE_ITEM_STRUC_STR-ID sy-vline 
WA_DMEE_SYNC_TREE_ITEM_STRUC_STR-NUMBER sy-vline 
WA_DMEE_SYNC_TREE_ITEM_STRUC_STR-MESSAGE sy-vline 
WA_DMEE_SYNC_TREE_ITEM_STRUC_STR-LOG_NO sy-vline 
WA_DMEE_SYNC_TREE_ITEM_STRUC_STR-LOG_MSG_NO sy-vline 
WA_DMEE_SYNC_TREE_ITEM_STRUC_STR-MESSAGE_V1 sy-vline 
WA_DMEE_SYNC_TREE_ITEM_STRUC_STR-MESSAGE_V2 sy-vline 
WA_DMEE_SYNC_TREE_ITEM_STRUC_STR-MESSAGE_V3 sy-vline 
WA_DMEE_SYNC_TREE_ITEM_STRUC_STR-MESSAGE_V4 sy-vline 
WA_DMEE_SYNC_TREE_ITEM_STRUC_STR-PARAMETER sy-vline 
WA_DMEE_SYNC_TREE_ITEM_STRUC_STR-ROW sy-vline 
WA_DMEE_SYNC_TREE_ITEM_STRUC_STR-FIELD sy-vline 
WA_DMEE_SYNC_TREE_ITEM_STRUC_STR-SYSTEM sy-vline 
WA_DMEE_SYNC_TREE_ITEM_STRUC_STR-SOURCE sy-vline      INTO ld_text SEPARATED BY SPACE.

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