ABAP Select data from SAP table CSITNACTYMNTR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CSITNACTYMNTR
*  INTO TABLE @DATA(IT_CSITNACTYMNTR2).
*--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_CSITNACTYMNTR INDEX 1 INTO DATA(WA_CSITNACTYMNTR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CSITNACTYMNTR>-MANDT = 1.
<CSITNACTYMNTR>-SITNINSTCEACTIVITYID = 1.
<CSITNACTYMNTR>-CALENDARYEAR = 1.
<CSITNACTYMNTR>-SITNINSTCEACTYDATETIME = 1.
<CSITNACTYMNTR>-SITNDEFINITIONID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CSITNACTYMNTR-SITNINSTCEACTYDATE, sy-vline,
  WA_CSITNACTYMNTR-SITNINSTCEACTYTYPEDESC, sy-vline,
  WA_CSITNACTYMNTR-SITUATIONINSTANCESTATUSDESC, sy-vline,
  WA_CSITNACTYMNTR-SITNINSTCEANCHOROBJECTKEY, sy-vline,
  WA_CSITNACTYMNTR-SITNINSTCETRIGGEROBJECTKEY, sy-vline,
  WA_CSITNACTYMNTR-SITNDEFANCHOROBJECTDESC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CSITNACTYMNTR 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_CSITNACTYMNTR 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_CSITNACTYMNTR INTO WA_CSITNACTYMNTR.


*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_CSITNACTYMNTR_STR, 
MANDT TYPE STRING,
SITNINSTCEACTIVITYID TYPE STRING,
CALENDARYEAR TYPE STRING,
SITNINSTCEACTYDATETIME TYPE STRING,
SITNDEFINITIONID TYPE STRING,
SITNINSTCEACTYDATE TYPE STRING,
SITNINSTCEACTYTYPEDESC TYPE STRING,
SITUATIONINSTANCESTATUSDESC TYPE STRING,
SITNINSTCEANCHOROBJECTKEY TYPE STRING,
SITNINSTCETRIGGEROBJECTKEY TYPE STRING,
SITNDEFANCHOROBJECTDESC TYPE STRING,
SITNDEFTRIGGEROBJECTDESC TYPE STRING,
SITNNUMBEROFINSTCEACTIVITIES TYPE STRING,
SITNINSTCEACTIVITYTRIGGERDESC TYPE STRING,
SITNNUMBEROFINSTANCES TYPE STRING,
SITNACTIONNAME TYPE STRING,
SITNACTIONDESCRIPTION TYPE STRING,
SITNACTIONID TYPE STRING,
SITNINSTCEACTYTYPE TYPE STRING,
SITNINSTCESTATUS TYPE STRING,
SITNINSTANCEID TYPE STRING,
SITNDEFANCHOROBJECT TYPE STRING,
SITNTRIGGEROBJECTKEYFIELD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CSITNACTYMNTR_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_CSITNACTYMNTR_STR-MANDT sy-vline 
WA_CSITNACTYMNTR_STR-SITNINSTCEACTIVITYID sy-vline 
WA_CSITNACTYMNTR_STR-CALENDARYEAR sy-vline 
WA_CSITNACTYMNTR_STR-SITNINSTCEACTYDATETIME sy-vline 
WA_CSITNACTYMNTR_STR-SITNDEFINITIONID sy-vline 
WA_CSITNACTYMNTR_STR-SITNINSTCEACTYDATE sy-vline 
WA_CSITNACTYMNTR_STR-SITNINSTCEACTYTYPEDESC sy-vline 
WA_CSITNACTYMNTR_STR-SITUATIONINSTANCESTATUSDESC sy-vline 
WA_CSITNACTYMNTR_STR-SITNINSTCEANCHOROBJECTKEY sy-vline 
WA_CSITNACTYMNTR_STR-SITNINSTCETRIGGEROBJECTKEY sy-vline 
WA_CSITNACTYMNTR_STR-SITNDEFANCHOROBJECTDESC sy-vline 
WA_CSITNACTYMNTR_STR-SITNDEFTRIGGEROBJECTDESC sy-vline 
WA_CSITNACTYMNTR_STR-SITNNUMBEROFINSTCEACTIVITIES sy-vline 
WA_CSITNACTYMNTR_STR-SITNINSTCEACTIVITYTRIGGERDESC sy-vline 
WA_CSITNACTYMNTR_STR-SITNNUMBEROFINSTANCES sy-vline 
WA_CSITNACTYMNTR_STR-SITNACTIONNAME sy-vline 
WA_CSITNACTYMNTR_STR-SITNACTIONDESCRIPTION sy-vline 
WA_CSITNACTYMNTR_STR-SITNACTIONID sy-vline 
WA_CSITNACTYMNTR_STR-SITNINSTCEACTYTYPE sy-vline 
WA_CSITNACTYMNTR_STR-SITNINSTCESTATUS sy-vline 
WA_CSITNACTYMNTR_STR-SITNINSTANCEID sy-vline 
WA_CSITNACTYMNTR_STR-SITNDEFANCHOROBJECT sy-vline 
WA_CSITNACTYMNTR_STR-SITNTRIGGEROBJECTKEYFIELD sy-vline      INTO ld_text SEPARATED BY SPACE.

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