ABAP Select data from SAP table POC_S_JNET_NODE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP POC_S_JNET_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 POC_S_JNET_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 POC_S_JNET_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_POC_S_JNET_NODE TYPE STANDARD TABLE OF POC_S_JNET_NODE,
      WA_POC_S_JNET_NODE TYPE POC_S_JNET_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: <POC_S_JNET_NODE> TYPE POC_S_JNET_NODE.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM POC_S_JNET_NODE
*  INTO TABLE @DATA(IT_POC_S_JNET_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_POC_S_JNET_NODE INDEX 1 INTO DATA(WA_POC_S_JNET_NODE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<POC_S_JNET_NODE>-ID = 1.
<POC_S_JNET_NODE>-PROCESS_ID = 1.
<POC_S_JNET_NODE>-PROCESS_STEP_ID = 1.
<POC_S_JNET_NODE>-PRO_STEP_TYPE_ID = 1.
<POC_S_JNET_NODE>-PRO_STP_TYP_NAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_POC_S_JNET_NODE-TIMESTAMP, sy-vline,
  WA_POC_S_JNET_NODE-ACTY_EXE_DATE, sy-vline,
  WA_POC_S_JNET_NODE-ACTY_EXE_TIME, sy-vline,
  WA_POC_S_JNET_NODE-BO_TYPE, sy-vline,
  WA_POC_S_JNET_NODE-BO_TYPE_NAME, sy-vline,
  WA_POC_S_JNET_NODE-BO_ID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_POC_S_JNET_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_POC_S_JNET_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_POC_S_JNET_NODE INTO WA_POC_S_JNET_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_POC_S_JNET_NODE-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_POC_S_JNET_NODE-LOGSYS.
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_POC_S_JNET_NODE_STR, 
ID TYPE STRING,
PROCESS_ID TYPE STRING,
PROCESS_STEP_ID TYPE STRING,
PRO_STEP_TYPE_ID TYPE STRING,
PRO_STP_TYP_NAME TYPE STRING,
TIMESTAMP TYPE STRING,
ACTY_EXE_DATE TYPE STRING,
ACTY_EXE_TIME TYPE STRING,
BO_TYPE TYPE STRING,
BO_TYPE_NAME TYPE STRING,
BO_ID TYPE STRING,
BA_TYPE TYPE STRING,
BA_TYPE_NAME TYPE STRING,
BA_NAME TYPE STRING,
BA_CATEGORY TYPE STRING,
BA_ID TYPE STRING,
ITEM_ID TYPE STRING,
CBE_CATEGORY TYPE STRING,
CBE_TYPE TYPE STRING,
CBE_NAME TYPE STRING,
UNAME TYPE STRING,
LOGSYS TYPE STRING,
COMPOUND_ACTIVITY TYPE STRING,
TRANSACTION_ID TYPE STRING,
IS_EXTRA TYPE STRING,
PROCESS_TYPE_ID TYPE STRING,
PROCESS_TYPE_NAME TYPE STRING,
PROCESS_START TYPE STRING,
PROCESS_END TYPE STRING,
CREATION TYPE STRING,
PROCESSOR_DESCRIPTION TYPE STRING,
NUMBER_EXECUTED TYPE STRING,
PHASE_ID TYPE STRING,
VISIBILITY TYPE STRING,
EXECUTED TYPE STRING,
STATUS_TEXT TYPE STRING,
EXPANDED TYPE STRING,
INTEGRATION_NAMES TYPE STRING,
INTEGRATIONS TYPE STRING,
INTEGRATION_STATUS1 TYPE STRING,
INTEGRATION_STATUS2 TYPE STRING,
INTEGRATION_STATUS3 TYPE STRING,
INTEGRATION_STATUS4 TYPE STRING,
IS_MAIN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_POC_S_JNET_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_POC_S_JNET_NODE_STR-ID sy-vline 
WA_POC_S_JNET_NODE_STR-PROCESS_ID sy-vline 
WA_POC_S_JNET_NODE_STR-PROCESS_STEP_ID sy-vline 
WA_POC_S_JNET_NODE_STR-PRO_STEP_TYPE_ID sy-vline 
WA_POC_S_JNET_NODE_STR-PRO_STP_TYP_NAME sy-vline 
WA_POC_S_JNET_NODE_STR-TIMESTAMP sy-vline 
WA_POC_S_JNET_NODE_STR-ACTY_EXE_DATE sy-vline 
WA_POC_S_JNET_NODE_STR-ACTY_EXE_TIME sy-vline 
WA_POC_S_JNET_NODE_STR-BO_TYPE sy-vline 
WA_POC_S_JNET_NODE_STR-BO_TYPE_NAME sy-vline 
WA_POC_S_JNET_NODE_STR-BO_ID sy-vline 
WA_POC_S_JNET_NODE_STR-BA_TYPE sy-vline 
WA_POC_S_JNET_NODE_STR-BA_TYPE_NAME sy-vline 
WA_POC_S_JNET_NODE_STR-BA_NAME sy-vline 
WA_POC_S_JNET_NODE_STR-BA_CATEGORY sy-vline 
WA_POC_S_JNET_NODE_STR-BA_ID sy-vline 
WA_POC_S_JNET_NODE_STR-ITEM_ID sy-vline 
WA_POC_S_JNET_NODE_STR-CBE_CATEGORY sy-vline 
WA_POC_S_JNET_NODE_STR-CBE_TYPE sy-vline 
WA_POC_S_JNET_NODE_STR-CBE_NAME sy-vline 
WA_POC_S_JNET_NODE_STR-UNAME sy-vline 
WA_POC_S_JNET_NODE_STR-LOGSYS sy-vline 
WA_POC_S_JNET_NODE_STR-COMPOUND_ACTIVITY sy-vline 
WA_POC_S_JNET_NODE_STR-TRANSACTION_ID sy-vline 
WA_POC_S_JNET_NODE_STR-IS_EXTRA sy-vline 
WA_POC_S_JNET_NODE_STR-PROCESS_TYPE_ID sy-vline 
WA_POC_S_JNET_NODE_STR-PROCESS_TYPE_NAME sy-vline 
WA_POC_S_JNET_NODE_STR-PROCESS_START sy-vline 
WA_POC_S_JNET_NODE_STR-PROCESS_END sy-vline 
WA_POC_S_JNET_NODE_STR-CREATION sy-vline 
WA_POC_S_JNET_NODE_STR-PROCESSOR_DESCRIPTION sy-vline 
WA_POC_S_JNET_NODE_STR-NUMBER_EXECUTED sy-vline 
WA_POC_S_JNET_NODE_STR-PHASE_ID sy-vline 
WA_POC_S_JNET_NODE_STR-VISIBILITY sy-vline 
WA_POC_S_JNET_NODE_STR-EXECUTED sy-vline 
WA_POC_S_JNET_NODE_STR-STATUS_TEXT sy-vline 
WA_POC_S_JNET_NODE_STR-EXPANDED sy-vline 
WA_POC_S_JNET_NODE_STR-INTEGRATION_NAMES sy-vline 
WA_POC_S_JNET_NODE_STR-INTEGRATIONS sy-vline 
WA_POC_S_JNET_NODE_STR-INTEGRATION_STATUS1 sy-vline 
WA_POC_S_JNET_NODE_STR-INTEGRATION_STATUS2 sy-vline 
WA_POC_S_JNET_NODE_STR-INTEGRATION_STATUS3 sy-vline 
WA_POC_S_JNET_NODE_STR-INTEGRATION_STATUS4 sy-vline 
WA_POC_S_JNET_NODE_STR-IS_MAIN sy-vline      INTO ld_text SEPARATED BY SPACE.

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