ABAP Select data from SAP table PPEARCHRES_NODEDATA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PPEARCHRES_NODEDATA
*  INTO TABLE @DATA(IT_PPEARCHRES_NODEDATA2).
*--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_PPEARCHRES_NODEDATA INDEX 1 INTO DATA(WA_PPEARCHRES_NODEDATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PPEARCHRES_NODEDATA>-NODE_ID = 1.
<PPEARCHRES_NODEDATA>-NODE_NAME = 1.
<PPEARCHRES_NODEDATA>-CLASS_NUM = 1.
<PPEARCHRES_NODEDATA>-CLASS_TYPE = 1.
<PPEARCHRES_NODEDATA>-NODE_TYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PPEARCHRES_NODEDATA-RESOURCE, sy-vline,
  WA_PPEARCHRES_NODEDATA-RESOURCE_ID, sy-vline,
  WA_PPEARCHRES_NODEDATA-TYPE, sy-vline,
  WA_PPEARCHRES_NODEDATA-LOCATION, sy-vline,
  WA_PPEARCHRES_NODEDATA-CALENDAR, sy-vline,
  WA_PPEARCHRES_NODEDATA-TIMEZONE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PPEARCHRES_NODEDATA 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_PPEARCHRES_NODEDATA 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_PPEARCHRES_NODEDATA INTO WA_PPEARCHRES_NODEDATA.


*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 PNUID, internal->external for field NODE_ID
CALL FUNCTION 'CONVERSION_EXIT_PNUID_OUTPUT'
  EXPORTING
    input =                      WA_PPEARCHRES_NODEDATA-NODE_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PPEARCHRES_NODEDATA-NODE_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field RESOURCE_QUANTITYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PPEARCHRES_NODEDATA-RESOURCE_QUANTITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PPEARCHRES_NODEDATA-RESOURCE_QUANTITYUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LOG_SYSTEM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PPEARCHRES_NODEDATA-LOG_SYSTEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PPEARCHRES_NODEDATA-LOG_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_PPEARCHRES_NODEDATA_STR, 
NODE_ID TYPE STRING,
NODE_NAME TYPE STRING,
CLASS_NUM TYPE STRING,
CLASS_TYPE TYPE STRING,
NODE_TYPE TYPE STRING,
RESOURCE TYPE STRING,
RESOURCE_ID TYPE STRING,
TYPE TYPE STRING,
LOCATION TYPE STRING,
CALENDAR TYPE STRING,
TIMEZONE TYPE STRING,
PRODRESOURCE_TYPE TYPE STRING,
RESOURCE_QUANTITY TYPE STRING,
RESOURCE_QUANTITYUNIT TYPE STRING,
RESOURCE_QUANTITY_UNITISO TYPE STRING,
CAPACITYPLNG_FLG TYPE STRING,
CONTROLLING_DATA_EXISTS TYPE STRING,
MATERIAL_LONG TYPE STRING,
MATERIAL_VERSION TYPE STRING,
MATERIAL_GUID TYPE STRING,
DELETE_FLG TYPE STRING,
LOG_SYSTEM TYPE STRING,
DEEP_DELETE_FLG TYPE STRING,
DIMENSION TYPE STRING,
NODE_REF_TYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PPEARCHRES_NODEDATA_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_PPEARCHRES_NODEDATA_STR-NODE_ID sy-vline 
WA_PPEARCHRES_NODEDATA_STR-NODE_NAME sy-vline 
WA_PPEARCHRES_NODEDATA_STR-CLASS_NUM sy-vline 
WA_PPEARCHRES_NODEDATA_STR-CLASS_TYPE sy-vline 
WA_PPEARCHRES_NODEDATA_STR-NODE_TYPE sy-vline 
WA_PPEARCHRES_NODEDATA_STR-RESOURCE sy-vline 
WA_PPEARCHRES_NODEDATA_STR-RESOURCE_ID sy-vline 
WA_PPEARCHRES_NODEDATA_STR-TYPE sy-vline 
WA_PPEARCHRES_NODEDATA_STR-LOCATION sy-vline 
WA_PPEARCHRES_NODEDATA_STR-CALENDAR sy-vline 
WA_PPEARCHRES_NODEDATA_STR-TIMEZONE sy-vline 
WA_PPEARCHRES_NODEDATA_STR-PRODRESOURCE_TYPE sy-vline 
WA_PPEARCHRES_NODEDATA_STR-RESOURCE_QUANTITY sy-vline 
WA_PPEARCHRES_NODEDATA_STR-RESOURCE_QUANTITYUNIT sy-vline 
WA_PPEARCHRES_NODEDATA_STR-RESOURCE_QUANTITY_UNITISO sy-vline 
WA_PPEARCHRES_NODEDATA_STR-CAPACITYPLNG_FLG sy-vline 
WA_PPEARCHRES_NODEDATA_STR-CONTROLLING_DATA_EXISTS sy-vline 
WA_PPEARCHRES_NODEDATA_STR-MATERIAL_LONG sy-vline 
WA_PPEARCHRES_NODEDATA_STR-MATERIAL_VERSION sy-vline 
WA_PPEARCHRES_NODEDATA_STR-MATERIAL_GUID sy-vline 
WA_PPEARCHRES_NODEDATA_STR-DELETE_FLG sy-vline 
WA_PPEARCHRES_NODEDATA_STR-LOG_SYSTEM sy-vline 
WA_PPEARCHRES_NODEDATA_STR-DEEP_DELETE_FLG sy-vline 
WA_PPEARCHRES_NODEDATA_STR-DIMENSION sy-vline 
WA_PPEARCHRES_NODEDATA_STR-NODE_REF_TYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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