ABAP Select data from SAP table CSMNODEDATA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CSMNODEDATA
*  INTO TABLE @DATA(IT_CSMNODEDATA2).
*--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_CSMNODEDATA INDEX 1 INTO DATA(WA_CSMNODEDATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CSMNODEDATA>-MTSYSID = 1.
<CSMNODEDATA>-MTETYPE = 1.
<CSMNODEDATA>-MTESUBTYPE = 1.
<CSMNODEDATA>-MTLONGNAME = 1.
<CSMNODEDATA>-TIDSTRING = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CSMNODEDATA-MTECLASS, sy-vline,
  WA_CSMNODEDATA-ALTREENUM, sy-vline,
  WA_CSMNODEDATA-ALIDXINTRE, sy-vline,
  WA_CSMNODEDATA-ALLEVINTRE, sy-vline,
  WA_CSMNODEDATA-ALPARINTRE, sy-vline,
  WA_CSMNODEDATA-CNTALINLST, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CSMNODEDATA 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_CSMNODEDATA 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_CSMNODEDATA INTO WA_CSMNODEDATA.


*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_CSMNODEDATA_STR, 
MTSYSID TYPE STRING,
MTETYPE TYPE STRING,
MTESUBTYPE TYPE STRING,
MTLONGNAME TYPE STRING,
TIDSTRING TYPE STRING,
MTECLASS TYPE STRING,
ALTREENUM TYPE STRING,
ALIDXINTRE TYPE STRING,
ALLEVINTRE TYPE STRING,
ALPARINTRE TYPE STRING,
CNTALINLST TYPE STRING,
CNTMTCHILD TYPE STRING,
DELIVERSTA TYPE STRING,
HIGHALVAL TYPE STRING,
HIGHALSEV TYPE STRING,
ALSYSID TYPE STRING,
MSEGNAME TYPE STRING,
ALUNIQNUM TYPE STRING,
ALINDEX TYPE STRING,
ALERTDATE TYPE STRING,
ALERTTIME TYPE STRING,
DUMMYALIGN TYPE STRING,
ALERTTMSTAMP TYPE STRING,
HIGHALTXT TYPE STRING,
LASTVALTMSTAMP TYPE STRING,
ACTUALVAL TYPE STRING,
ACTUALSEV TYPE STRING,
VALSYSID TYPE STRING,
VMSEGNAME TYPE STRING,
VALUNIQNUM TYPE STRING,
VALINDEX TYPE STRING,
VALERTDATE TYPE STRING,
VALERTTIME TYPE STRING,
VALERTDUM TYPE STRING,
VALTMSTAMP TYPE STRING,
COUNTOFACT TYPE STRING,
COUNTSUM TYPE STRING,
TDSTATUS TYPE STRING,
RC TYPE STRING,
PERFVAL_INDX TYPE STRING,
STATVAL_INDX TYPE STRING,
MSGLOG_INDX TYPE STRING,
TEXTVAL_INDX TYPE STRING,
GENCUST_INDX TYPE STRING,
PERFCUS_INDX TYPE STRING,
STATCUS_INDX TYPE STRING,
LOGCUST_INDX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CSMNODEDATA_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_CSMNODEDATA_STR-MTSYSID sy-vline 
WA_CSMNODEDATA_STR-MTETYPE sy-vline 
WA_CSMNODEDATA_STR-MTESUBTYPE sy-vline 
WA_CSMNODEDATA_STR-MTLONGNAME sy-vline 
WA_CSMNODEDATA_STR-TIDSTRING sy-vline 
WA_CSMNODEDATA_STR-MTECLASS sy-vline 
WA_CSMNODEDATA_STR-ALTREENUM sy-vline 
WA_CSMNODEDATA_STR-ALIDXINTRE sy-vline 
WA_CSMNODEDATA_STR-ALLEVINTRE sy-vline 
WA_CSMNODEDATA_STR-ALPARINTRE sy-vline 
WA_CSMNODEDATA_STR-CNTALINLST sy-vline 
WA_CSMNODEDATA_STR-CNTMTCHILD sy-vline 
WA_CSMNODEDATA_STR-DELIVERSTA sy-vline 
WA_CSMNODEDATA_STR-HIGHALVAL sy-vline 
WA_CSMNODEDATA_STR-HIGHALSEV sy-vline 
WA_CSMNODEDATA_STR-ALSYSID sy-vline 
WA_CSMNODEDATA_STR-MSEGNAME sy-vline 
WA_CSMNODEDATA_STR-ALUNIQNUM sy-vline 
WA_CSMNODEDATA_STR-ALINDEX sy-vline 
WA_CSMNODEDATA_STR-ALERTDATE sy-vline 
WA_CSMNODEDATA_STR-ALERTTIME sy-vline 
WA_CSMNODEDATA_STR-DUMMYALIGN sy-vline 
WA_CSMNODEDATA_STR-ALERTTMSTAMP sy-vline 
WA_CSMNODEDATA_STR-HIGHALTXT sy-vline 
WA_CSMNODEDATA_STR-LASTVALTMSTAMP sy-vline 
WA_CSMNODEDATA_STR-ACTUALVAL sy-vline 
WA_CSMNODEDATA_STR-ACTUALSEV sy-vline 
WA_CSMNODEDATA_STR-VALSYSID sy-vline 
WA_CSMNODEDATA_STR-VMSEGNAME sy-vline 
WA_CSMNODEDATA_STR-VALUNIQNUM sy-vline 
WA_CSMNODEDATA_STR-VALINDEX sy-vline 
WA_CSMNODEDATA_STR-VALERTDATE sy-vline 
WA_CSMNODEDATA_STR-VALERTTIME sy-vline 
WA_CSMNODEDATA_STR-VALERTDUM sy-vline 
WA_CSMNODEDATA_STR-VALTMSTAMP sy-vline 
WA_CSMNODEDATA_STR-COUNTOFACT sy-vline 
WA_CSMNODEDATA_STR-COUNTSUM sy-vline 
WA_CSMNODEDATA_STR-TDSTATUS sy-vline 
WA_CSMNODEDATA_STR-RC sy-vline 
WA_CSMNODEDATA_STR-PERFVAL_INDX sy-vline 
WA_CSMNODEDATA_STR-STATVAL_INDX sy-vline 
WA_CSMNODEDATA_STR-MSGLOG_INDX sy-vline 
WA_CSMNODEDATA_STR-TEXTVAL_INDX sy-vline 
WA_CSMNODEDATA_STR-GENCUST_INDX sy-vline 
WA_CSMNODEDATA_STR-PERFCUS_INDX sy-vline 
WA_CSMNODEDATA_STR-STATCUS_INDX sy-vline 
WA_CSMNODEDATA_STR-LOGCUST_INDX sy-vline      INTO ld_text SEPARATED BY SPACE.

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