ABAP Select data from SAP table ICLEACTIVITY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICLEACTIVITY
*  INTO TABLE @DATA(IT_ICLEACTIVITY2).
*--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_ICLEACTIVITY INDEX 1 INTO DATA(WA_ICLEACTIVITY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICLEACTIVITY>-CLIENT = 1.
<ICLEACTIVITY>-ACTIVE = 1.
<ICLEACTIVITY>-CCEVENT = 1.
<ICLEACTIVITY>-ACTNUMBER = 1.
<ICLEACTIVITY>-CHANGETIME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICLEACTIVITY-CHANGEDBY, sy-vline,
  WA_ICLEACTIVITY-DELETED, sy-vline,
  WA_ICLEACTIVITY-CREATEDBY, sy-vline,
  WA_ICLEACTIVITY-CREATETIME, sy-vline,
  WA_ICLEACTIVITY-ACTIVITY, sy-vline,
  WA_ICLEACTIVITY-XMANUAL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICLEACTIVITY 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_ICLEACTIVITY 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_ICLEACTIVITY INTO WA_ICLEACTIVITY.


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

*Conversion exit TSTAM, internal->external for field CHANGETIME
CALL FUNCTION 'CONVERSION_EXIT_TSTAM_OUTPUT'
  EXPORTING
    input =                      WA_ICLEACTIVITY-CHANGETIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICLEACTIVITY-CHANGETIME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTAM, internal->external for field CREATETIME
CALL FUNCTION 'CONVERSION_EXIT_TSTAM_OUTPUT'
  EXPORTING
    input =                      WA_ICLEACTIVITY-CREATETIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICLEACTIVITY-CREATETIME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTAM, internal->external for field DUETIME
CALL FUNCTION 'CONVERSION_EXIT_TSTAM_OUTPUT'
  EXPORTING
    input =                      WA_ICLEACTIVITY-DUETIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICLEACTIVITY-DUETIME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTAM, internal->external for field RESUBM_TIME
CALL FUNCTION 'CONVERSION_EXIT_TSTAM_OUTPUT'
  EXPORTING
    input =                      WA_ICLEACTIVITY-RESUBM_TIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICLEACTIVITY-RESUBM_TIME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTAM, internal->external for field DUEDATE_TIME1
CALL FUNCTION 'CONVERSION_EXIT_TSTAM_OUTPUT'
  EXPORTING
    input =                      WA_ICLEACTIVITY-DUEDATE_TIME1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICLEACTIVITY-DUEDATE_TIME1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTAM, internal->external for field DUEDATE_TIME2
CALL FUNCTION 'CONVERSION_EXIT_TSTAM_OUTPUT'
  EXPORTING
    input =                      WA_ICLEACTIVITY-DUEDATE_TIME2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICLEACTIVITY-DUEDATE_TIME2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTAM, internal->external for field DUEDATE_TIME3
CALL FUNCTION 'CONVERSION_EXIT_TSTAM_OUTPUT'
  EXPORTING
    input =                      WA_ICLEACTIVITY-DUEDATE_TIME3
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICLEACTIVITY-DUEDATE_TIME3.
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_ICLEACTIVITY_STR, 
CLIENT TYPE STRING,
ACTIVE TYPE STRING,
CCEVENT TYPE STRING,
ACTNUMBER TYPE STRING,
CHANGETIME TYPE STRING,
CHANGEDBY TYPE STRING,
DELETED TYPE STRING,
CREATEDBY TYPE STRING,
CREATETIME TYPE STRING,
ACTIVITY TYPE STRING,
XMANUAL TYPE STRING,
TEXT TYPE STRING,
DUETIME TYPE STRING,
XDONE TYPE STRING,
ACT_STATUS TYPE STRING,
NAVIGATE TYPE STRING,
SUBOBJCAT TYPE STRING,
SUBOBJECT TYPE STRING,
ACT_ASSIGN_STATE TYPE STRING,
ACT_HANDLERTYPE TYPE STRING,
ACT_HANDLER TYPE STRING,
ACT_HNDLRTP_GRP TYPE STRING,
ACT_HANDLER_GRP TYPE STRING,
PRIORITY TYPE STRING,
SUBACTIVITYUSED TYPE STRING,
RESUBM_TIME TYPE STRING,
SUBACTIVITYN TYPE STRING,
ACT_GRP_CAT TYPE STRING,
EXPRESSION_ORIG TYPE STRING,
DUEDATE_TIME1 TYPE STRING,
DUEDATE_TIME2 TYPE STRING,
DUEDATE_TIME3 TYPE STRING,
MAN_OTYPE TYPE STRING,
MAN_ACTORID TYPE STRING,
PRIORITY_WF TYPE STRING,
AUTHGRP TYPE STRING,
XSYSTEM_ACTIVITY TYPE STRING,
WF_STATUS TYPE STRING,
NOT_WF_RELEVANT TYPE STRING,
WI_ID TYPE STRING,
MANUAL_TASK_ONLY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICLEACTIVITY_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_ICLEACTIVITY_STR-CLIENT sy-vline 
WA_ICLEACTIVITY_STR-ACTIVE sy-vline 
WA_ICLEACTIVITY_STR-CCEVENT sy-vline 
WA_ICLEACTIVITY_STR-ACTNUMBER sy-vline 
WA_ICLEACTIVITY_STR-CHANGETIME sy-vline 
WA_ICLEACTIVITY_STR-CHANGEDBY sy-vline 
WA_ICLEACTIVITY_STR-DELETED sy-vline 
WA_ICLEACTIVITY_STR-CREATEDBY sy-vline 
WA_ICLEACTIVITY_STR-CREATETIME sy-vline 
WA_ICLEACTIVITY_STR-ACTIVITY sy-vline 
WA_ICLEACTIVITY_STR-XMANUAL sy-vline 
WA_ICLEACTIVITY_STR-TEXT sy-vline 
WA_ICLEACTIVITY_STR-DUETIME sy-vline 
WA_ICLEACTIVITY_STR-XDONE sy-vline 
WA_ICLEACTIVITY_STR-ACT_STATUS sy-vline 
WA_ICLEACTIVITY_STR-NAVIGATE sy-vline 
WA_ICLEACTIVITY_STR-SUBOBJCAT sy-vline 
WA_ICLEACTIVITY_STR-SUBOBJECT sy-vline 
WA_ICLEACTIVITY_STR-ACT_ASSIGN_STATE sy-vline 
WA_ICLEACTIVITY_STR-ACT_HANDLERTYPE sy-vline 
WA_ICLEACTIVITY_STR-ACT_HANDLER sy-vline 
WA_ICLEACTIVITY_STR-ACT_HNDLRTP_GRP sy-vline 
WA_ICLEACTIVITY_STR-ACT_HANDLER_GRP sy-vline 
WA_ICLEACTIVITY_STR-PRIORITY sy-vline 
WA_ICLEACTIVITY_STR-SUBACTIVITYUSED sy-vline 
WA_ICLEACTIVITY_STR-RESUBM_TIME sy-vline 
WA_ICLEACTIVITY_STR-SUBACTIVITYN sy-vline 
WA_ICLEACTIVITY_STR-ACT_GRP_CAT sy-vline 
WA_ICLEACTIVITY_STR-EXPRESSION_ORIG sy-vline 
WA_ICLEACTIVITY_STR-DUEDATE_TIME1 sy-vline 
WA_ICLEACTIVITY_STR-DUEDATE_TIME2 sy-vline 
WA_ICLEACTIVITY_STR-DUEDATE_TIME3 sy-vline 
WA_ICLEACTIVITY_STR-MAN_OTYPE sy-vline 
WA_ICLEACTIVITY_STR-MAN_ACTORID sy-vline 
WA_ICLEACTIVITY_STR-PRIORITY_WF sy-vline 
WA_ICLEACTIVITY_STR-AUTHGRP sy-vline 
WA_ICLEACTIVITY_STR-XSYSTEM_ACTIVITY sy-vline 
WA_ICLEACTIVITY_STR-WF_STATUS sy-vline 
WA_ICLEACTIVITY_STR-NOT_WF_RELEVANT sy-vline 
WA_ICLEACTIVITY_STR-WI_ID sy-vline 
WA_ICLEACTIVITY_STR-MANUAL_TASK_ONLY sy-vline      INTO ld_text SEPARATED BY SPACE.

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