ABAP Select data from SAP table ALMDEFNODE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ALMDEFNODE
*  INTO TABLE @DATA(IT_ALMDEFNODE2).
*--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_ALMDEFNODE INDEX 1 INTO DATA(WA_ALMDEFNODE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ALMDEFNODE>-NODE_KEY = 1.
<ALMDEFNODE>-PARENT_KEY = 1.
<ALMDEFNODE>-NAME = 1.
<ALMDEFNODE>-TYPE = 1.
<ALMDEFNODE>-NODESEQNO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ALMDEFNODE-TID, sy-vline,
  WA_ALMDEFNODE-MTSYSID, sy-vline,
  WA_ALMDEFNODE-MTMCNAME, sy-vline,
  WA_ALMDEFNODE-MTNUMRANGE, sy-vline,
  WA_ALMDEFNODE-MTUID, sy-vline,
  WA_ALMDEFNODE-MTCLASS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ALMDEFNODE 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_ALMDEFNODE 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_ALMDEFNODE INTO WA_ALMDEFNODE.


*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_ALMDEFNODE_STR, 
NODE_KEY TYPE STRING,
PARENT_KEY TYPE STRING,
NAME TYPE STRING,
TYPE TYPE STRING,
NODESEQNO TYPE STRING,
TID TYPE STRING,
MTSYSID TYPE STRING,
MTMCNAME TYPE STRING,
MTNUMRANGE TYPE STRING,
MTUID TYPE STRING,
MTCLASS TYPE STRING,
MTINDEX TYPE STRING,
EXTINDEX TYPE STRING,
MTESHRTNAM TYPE STRING,
MTECLASS TYPE STRING,
MTEINFO TYPE STRING,
XMIMSGCLS TYPE STRING,
XMIMSGID TYPE STRING,
PARAM1 TYPE STRING,
PARAM2 TYPE STRING,
PARAM3 TYPE STRING,
PARAM4 TYPE STRING,
MTEDISPOPT TYPE STRING,
SHSYSID TYPE STRING,
SHCONTEXT TYPE STRING,
SHOBJECT TYPE STRING,
SHATTR TYPE STRING,
SHRESNODES TYPE STRING,
NODNAMRULE TYPE STRING,
MTEVIRTNDK TYPE STRING,
MTEREPOSAV TYPE STRING,
RULE_KEY TYPE STRING,
NODNAMRULE TYPE STRING,
RULEPARAMS TYPE STRING,
LNKDMDGUID TYPE STRING,
NODEGUID TYPE STRING,
MONIGUID TYPE STRING,
MARKED TYPE STRING,
EXPAND TYPE STRING,
SYNTXERR TYPE STRING,
XMIMSGCLS TYPE STRING,
XMIMSGID TYPE STRING,
PARAM1 TYPE STRING,
PARAM2 TYPE STRING,
PARAM3 TYPE STRING,
PARAM4 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ALMDEFNODE_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_ALMDEFNODE_STR-NODE_KEY sy-vline 
WA_ALMDEFNODE_STR-PARENT_KEY sy-vline 
WA_ALMDEFNODE_STR-NAME sy-vline 
WA_ALMDEFNODE_STR-TYPE sy-vline 
WA_ALMDEFNODE_STR-NODESEQNO sy-vline 
WA_ALMDEFNODE_STR-TID sy-vline 
WA_ALMDEFNODE_STR-MTSYSID sy-vline 
WA_ALMDEFNODE_STR-MTMCNAME sy-vline 
WA_ALMDEFNODE_STR-MTNUMRANGE sy-vline 
WA_ALMDEFNODE_STR-MTUID sy-vline 
WA_ALMDEFNODE_STR-MTCLASS sy-vline 
WA_ALMDEFNODE_STR-MTINDEX sy-vline 
WA_ALMDEFNODE_STR-EXTINDEX sy-vline 
WA_ALMDEFNODE_STR-MTESHRTNAM sy-vline 
WA_ALMDEFNODE_STR-MTECLASS sy-vline 
WA_ALMDEFNODE_STR-MTEINFO sy-vline 
WA_ALMDEFNODE_STR-XMIMSGCLS sy-vline 
WA_ALMDEFNODE_STR-XMIMSGID sy-vline 
WA_ALMDEFNODE_STR-PARAM1 sy-vline 
WA_ALMDEFNODE_STR-PARAM2 sy-vline 
WA_ALMDEFNODE_STR-PARAM3 sy-vline 
WA_ALMDEFNODE_STR-PARAM4 sy-vline 
WA_ALMDEFNODE_STR-MTEDISPOPT sy-vline 
WA_ALMDEFNODE_STR-SHSYSID sy-vline 
WA_ALMDEFNODE_STR-SHCONTEXT sy-vline 
WA_ALMDEFNODE_STR-SHOBJECT sy-vline 
WA_ALMDEFNODE_STR-SHATTR sy-vline 
WA_ALMDEFNODE_STR-SHRESNODES sy-vline 
WA_ALMDEFNODE_STR-NODNAMRULE sy-vline 
WA_ALMDEFNODE_STR-MTEVIRTNDK sy-vline 
WA_ALMDEFNODE_STR-MTEREPOSAV sy-vline 
WA_ALMDEFNODE_STR-RULE_KEY sy-vline 
WA_ALMDEFNODE_STR-NODNAMRULE sy-vline 
WA_ALMDEFNODE_STR-RULEPARAMS sy-vline 
WA_ALMDEFNODE_STR-LNKDMDGUID sy-vline 
WA_ALMDEFNODE_STR-NODEGUID sy-vline 
WA_ALMDEFNODE_STR-MONIGUID sy-vline 
WA_ALMDEFNODE_STR-MARKED sy-vline 
WA_ALMDEFNODE_STR-EXPAND sy-vline 
WA_ALMDEFNODE_STR-SYNTXERR sy-vline 
WA_ALMDEFNODE_STR-XMIMSGCLS sy-vline 
WA_ALMDEFNODE_STR-XMIMSGID sy-vline 
WA_ALMDEFNODE_STR-PARAM1 sy-vline 
WA_ALMDEFNODE_STR-PARAM2 sy-vline 
WA_ALMDEFNODE_STR-PARAM3 sy-vline 
WA_ALMDEFNODE_STR-PARAM4 sy-vline      INTO ld_text SEPARATED BY SPACE.

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