ABAP Select data from SAP table /PLMI/S_PPE_EXPL_CMP_NODE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /PLMI/S_PPE_EXPL_CMP_NODE 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 /PLMI/S_PPE_EXPL_CMP_NODE. 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 /PLMI/S_PPE_EXPL_CMP_NODE 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_/PLMI/S_PPE_EXPL_CMP_NODE TYPE STANDARD TABLE OF /PLMI/S_PPE_EXPL_CMP_NODE,
      WA_/PLMI/S_PPE_EXPL_CMP_NODE TYPE /PLMI/S_PPE_EXPL_CMP_NODE,
      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: </PLMI/S_PPE_EXPL_CMP_NODE> TYPE /PLMI/S_PPE_EXPL_CMP_NODE.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /PLMI/S_PPE_EXPL_CMP_NODE
  INTO TABLE IT_/PLMI/S_PPE_EXPL_CMP_NODE.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /PLMI/S_PPE_EXPL_CMP_NODE
*  INTO TABLE @DATA(IT_/PLMI/S_PPE_EXPL_CMP_NODE2).
*--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_/PLMI/S_PPE_EXPL_CMP_NODE INDEX 1 INTO DATA(WA_/PLMI/S_PPE_EXPL_CMP_NODE2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/PLMI/S_PPE_EXPL_CMP_NODE ASSIGNING </PLMI/S_PPE_EXPL_CMP_NODE>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</PLMI/S_PPE_EXPL_CMP_NODE>-GUIDID = 1.
</PLMI/S_PPE_EXPL_CMP_NODE>-OBJECT_TYPEID = 1.
</PLMI/S_PPE_EXPL_CMP_NODE>-ECN_COUNTERID = 1.
</PLMI/S_PPE_EXPL_CMP_NODE>-GUID = 1.
</PLMI/S_PPE_EXPL_CMP_NODE>-NODE_NAME = 1.

ENDLOOP.

LOOP AT IT_/PLMI/S_PPE_EXPL_CMP_NODE INTO WA_/PLMI/S_PPE_EXPL_CMP_NODE.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/PLMI/S_PPE_EXPL_CMP_NODE-NAMEID, sy-vline,
  WA_/PLMI/S_PPE_EXPL_CMP_NODE-NAMEID_OBJECT_TYPE, sy-vline,
  WA_/PLMI/S_PPE_EXPL_CMP_NODE-NAMEID_APPLOBJ, sy-vline,
  WA_/PLMI/S_PPE_EXPL_CMP_NODE-CLINT, sy-vline,
  WA_/PLMI/S_PPE_EXPL_CMP_NODE-NODE_TYPE, sy-vline,
  WA_/PLMI/S_PPE_EXPL_CMP_NODE-APPLOBJ_TYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/PLMI/S_PPE_EXPL_CMP_NODE 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_/PLMI/S_PPE_EXPL_CMP_NODE 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_/PLMI/S_PPE_EXPL_CMP_NODE INTO WA_/PLMI/S_PPE_EXPL_CMP_NODE.


*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 LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/PLMI/S_PPE_EXPL_CMP_NODE-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PLMI/S_PPE_EXPL_CMP_NODE-LOGSYS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field LANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_/PLMI/S_PPE_EXPL_CMP_NODE-LANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PLMI/S_PPE_EXPL_CMP_NODE-LANGUAGE.
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_/PLMI/S_PPE_EXPL_CMP_NODE_STR, 
GUIDID TYPE STRING,
OBJECT_TYPEID TYPE STRING,
ECN_COUNTERID TYPE STRING,
GUID TYPE STRING,
NODE_NAME TYPE STRING,
NAMEID TYPE STRING,
NAMEID_OBJECT_TYPE TYPE STRING,
NAMEID_APPLOBJ TYPE STRING,
CLINT TYPE STRING,
NODE_TYPE TYPE STRING,
APPLOBJ_TYPE TYPE STRING,
TIMESTMP TYPE STRING,
CREADAT TYPE STRING,
CREABY TYPE STRING,
CHNGDAT TYPE STRING,
CHNGBY TYPE STRING,
LOGSYS TYPE STRING,
HISTFLG TYPE STRING,
CLASS TYPE STRING,
CLASS_TYPE TYPE STRING,
PVCMAND TYPE STRING,
PVCMULT TYPE STRING,
PVCFREE TYPE STRING,
PVCPRIO TYPE STRING,
LANGUAGE TYPE STRING,
TEXT TYPE STRING,
NODE_ACC_EXT_ID TYPE STRING,
ROOT_FLG TYPE STRING,
LEAF_FLG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/PLMI/S_PPE_EXPL_CMP_NODE_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_/PLMI/S_PPE_EXPL_CMP_NODE_STR-GUIDID sy-vline 
WA_/PLMI/S_PPE_EXPL_CMP_NODE_STR-OBJECT_TYPEID sy-vline 
WA_/PLMI/S_PPE_EXPL_CMP_NODE_STR-ECN_COUNTERID sy-vline 
WA_/PLMI/S_PPE_EXPL_CMP_NODE_STR-GUID sy-vline 
WA_/PLMI/S_PPE_EXPL_CMP_NODE_STR-NODE_NAME sy-vline 
WA_/PLMI/S_PPE_EXPL_CMP_NODE_STR-NAMEID sy-vline 
WA_/PLMI/S_PPE_EXPL_CMP_NODE_STR-NAMEID_OBJECT_TYPE sy-vline 
WA_/PLMI/S_PPE_EXPL_CMP_NODE_STR-NAMEID_APPLOBJ sy-vline 
WA_/PLMI/S_PPE_EXPL_CMP_NODE_STR-CLINT sy-vline 
WA_/PLMI/S_PPE_EXPL_CMP_NODE_STR-NODE_TYPE sy-vline 
WA_/PLMI/S_PPE_EXPL_CMP_NODE_STR-APPLOBJ_TYPE sy-vline 
WA_/PLMI/S_PPE_EXPL_CMP_NODE_STR-TIMESTMP sy-vline 
WA_/PLMI/S_PPE_EXPL_CMP_NODE_STR-CREADAT sy-vline 
WA_/PLMI/S_PPE_EXPL_CMP_NODE_STR-CREABY sy-vline 
WA_/PLMI/S_PPE_EXPL_CMP_NODE_STR-CHNGDAT sy-vline 
WA_/PLMI/S_PPE_EXPL_CMP_NODE_STR-CHNGBY sy-vline 
WA_/PLMI/S_PPE_EXPL_CMP_NODE_STR-LOGSYS sy-vline 
WA_/PLMI/S_PPE_EXPL_CMP_NODE_STR-HISTFLG sy-vline 
WA_/PLMI/S_PPE_EXPL_CMP_NODE_STR-CLASS sy-vline 
WA_/PLMI/S_PPE_EXPL_CMP_NODE_STR-CLASS_TYPE sy-vline 
WA_/PLMI/S_PPE_EXPL_CMP_NODE_STR-PVCMAND sy-vline 
WA_/PLMI/S_PPE_EXPL_CMP_NODE_STR-PVCMULT sy-vline 
WA_/PLMI/S_PPE_EXPL_CMP_NODE_STR-PVCFREE sy-vline 
WA_/PLMI/S_PPE_EXPL_CMP_NODE_STR-PVCPRIO sy-vline 
WA_/PLMI/S_PPE_EXPL_CMP_NODE_STR-LANGUAGE sy-vline 
WA_/PLMI/S_PPE_EXPL_CMP_NODE_STR-TEXT sy-vline 
WA_/PLMI/S_PPE_EXPL_CMP_NODE_STR-NODE_ACC_EXT_ID sy-vline 
WA_/PLMI/S_PPE_EXPL_CMP_NODE_STR-ROOT_FLG sy-vline 
WA_/PLMI/S_PPE_EXPL_CMP_NODE_STR-LEAF_FLG sy-vline      INTO ld_text SEPARATED BY SPACE.

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