ABAP Select data from SAP table IACTIVITYENHCD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IACTIVITYENHCD
*  INTO TABLE @DATA(IT_IACTIVITYENHCD2).
*--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_IACTIVITYENHCD INDEX 1 INTO DATA(WA_IACTIVITYENHCD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IACTIVITYENHCD>-MANDT = 1.
<IACTIVITYENHCD>-CUSTMGMTOBJECTTYPE = 1.
<IACTIVITYENHCD>-CUSTMGMTACTIVITY = 1.
<IACTIVITYENHCD>-CUSTMGMTACTIVITYCATEGORY = 1.
<IACTIVITYENHCD>-CUSTMGMTACTIVITYDESCRIPTION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IACTIVITYENHCD-CUSTMGMTACTIVITYPRIORITY, sy-vline,
  WA_IACTIVITYENHCD-CUSTMGMTACTIVITYISPRIVATE, sy-vline,
  WA_IACTIVITYENHCD-BUSINESSACTIVITYCLASS, sy-vline,
  WA_IACTIVITYENHCD-CUSTMGMTACTIVITYDIRECTION, sy-vline,
  WA_IACTIVITYENHCD-CUSTMGMTACTIVITYLOCATIONTEXT, sy-vline,
  WA_IACTIVITYENHCD-CUSTMGMTACTYISDSPDINCALENDAR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IACTIVITYENHCD 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_IACTIVITYENHCD 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_IACTIVITYENHCD INTO WA_IACTIVITYENHCD.


*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 CUSTMGMTACTIVITY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IACTIVITYENHCD-CUSTMGMTACTIVITY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IACTIVITYENHCD-CUSTMGMTACTIVITY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ACCOUNT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IACTIVITYENHCD-ACCOUNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IACTIVITYENHCD-ACCOUNT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CONTACTPERSON
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IACTIVITYENHCD-CONTACTPERSON
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IACTIVITYENHCD-CONTACTPERSON.
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_IACTIVITYENHCD_STR, 
MANDT TYPE STRING,
CUSTMGMTOBJECTTYPE TYPE STRING,
CUSTMGMTACTIVITY TYPE STRING,
CUSTMGMTACTIVITYCATEGORY TYPE STRING,
CUSTMGMTACTIVITYDESCRIPTION TYPE STRING,
CUSTMGMTACTIVITYPRIORITY TYPE STRING,
CUSTMGMTACTIVITYISPRIVATE TYPE STRING,
BUSINESSACTIVITYCLASS TYPE STRING,
CUSTMGMTACTIVITYDIRECTION TYPE STRING,
CUSTMGMTACTIVITYLOCATIONTEXT TYPE STRING,
CUSTMGMTACTYISDSPDINCALENDAR TYPE STRING,
CUSTMGMTTASKCOMPLTNRATEINPCT TYPE STRING,
CUSTMGMTACTIVITYUUID TYPE STRING,
CUSTMGMTACTIVITYTYPE TYPE STRING,
ACCOUNT TYPE STRING,
CONTACTPERSON TYPE STRING,
CUSTMGMTACTIVITYSTATUS TYPE STRING,
CUSTMGMTACTIVITYISREJECTED TYPE STRING,
CUSTMGMTACTIVITYSTARTDATETIME TYPE STRING,
CUSTMGMTACTIVITYENDDATETIME TYPE STRING,
SALESORGANIZATIONORGUNITID TYPE STRING,
SALESOFFICEORGUNITID TYPE STRING,
SALESGROUPORGUNITID TYPE STRING,
RESPONSIBLESALESORGANIZATION TYPE STRING,
SERVICEORGANIZATION TYPE STRING,
RESPONSIBLESERVICEORGANIZATION TYPE STRING,
DISTRIBUTIONCHANNEL TYPE STRING,
DIVISION TYPE STRING,
TEXTOBJECTKEY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IACTIVITYENHCD_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_IACTIVITYENHCD_STR-MANDT sy-vline 
WA_IACTIVITYENHCD_STR-CUSTMGMTOBJECTTYPE sy-vline 
WA_IACTIVITYENHCD_STR-CUSTMGMTACTIVITY sy-vline 
WA_IACTIVITYENHCD_STR-CUSTMGMTACTIVITYCATEGORY sy-vline 
WA_IACTIVITYENHCD_STR-CUSTMGMTACTIVITYDESCRIPTION sy-vline 
WA_IACTIVITYENHCD_STR-CUSTMGMTACTIVITYPRIORITY sy-vline 
WA_IACTIVITYENHCD_STR-CUSTMGMTACTIVITYISPRIVATE sy-vline 
WA_IACTIVITYENHCD_STR-BUSINESSACTIVITYCLASS sy-vline 
WA_IACTIVITYENHCD_STR-CUSTMGMTACTIVITYDIRECTION sy-vline 
WA_IACTIVITYENHCD_STR-CUSTMGMTACTIVITYLOCATIONTEXT sy-vline 
WA_IACTIVITYENHCD_STR-CUSTMGMTACTYISDSPDINCALENDAR sy-vline 
WA_IACTIVITYENHCD_STR-CUSTMGMTTASKCOMPLTNRATEINPCT sy-vline 
WA_IACTIVITYENHCD_STR-CUSTMGMTACTIVITYUUID sy-vline 
WA_IACTIVITYENHCD_STR-CUSTMGMTACTIVITYTYPE sy-vline 
WA_IACTIVITYENHCD_STR-ACCOUNT sy-vline 
WA_IACTIVITYENHCD_STR-CONTACTPERSON sy-vline 
WA_IACTIVITYENHCD_STR-CUSTMGMTACTIVITYSTATUS sy-vline 
WA_IACTIVITYENHCD_STR-CUSTMGMTACTIVITYISREJECTED sy-vline 
WA_IACTIVITYENHCD_STR-CUSTMGMTACTIVITYSTARTDATETIME sy-vline 
WA_IACTIVITYENHCD_STR-CUSTMGMTACTIVITYENDDATETIME sy-vline 
WA_IACTIVITYENHCD_STR-SALESORGANIZATIONORGUNITID sy-vline 
WA_IACTIVITYENHCD_STR-SALESOFFICEORGUNITID sy-vline 
WA_IACTIVITYENHCD_STR-SALESGROUPORGUNITID sy-vline 
WA_IACTIVITYENHCD_STR-RESPONSIBLESALESORGANIZATION sy-vline 
WA_IACTIVITYENHCD_STR-SERVICEORGANIZATION sy-vline 
WA_IACTIVITYENHCD_STR-RESPONSIBLESERVICEORGANIZATION sy-vline 
WA_IACTIVITYENHCD_STR-DISTRIBUTIONCHANNEL sy-vline 
WA_IACTIVITYENHCD_STR-DIVISION sy-vline 
WA_IACTIVITYENHCD_STR-TEXTOBJECTKEY sy-vline      INTO ld_text SEPARATED BY SPACE.

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