ABAP Select data from SAP table ICL_POLL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICL_POLL
*  INTO TABLE @DATA(IT_ICL_POLL2).
*--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_ICL_POLL INDEX 1 INTO DATA(WA_ICL_POLL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICL_POLL>-CLIENT = 1.
<ICL_POLL>-ACTIVE = 1.
<ICL_POLL>-CLAIM = 1.
<ICL_POLL>-POLVNR = 1.
<ICL_POLL>-COVERAGE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICL_POLL-BENTYPE, sy-vline,
  WA_ICL_POLL-INSUREDOBJ, sy-vline,
  WA_ICL_POLL-PRIORITY, sy-vline,
  WA_ICL_POLL-BENTYPE_REF, sy-vline,
  WA_ICL_POLL-CMC_RULE, sy-vline,
  WA_ICL_POLL-LIMIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICL_POLL 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_ICL_POLL 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_ICL_POLL INTO WA_ICL_POLL.


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

*Conversion exit CUNIT, internal->external for field LIMUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ICL_POLL-LIMUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICL_POLL-LIMUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field DEDUCTUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ICL_POLL-DEDUCTUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICL_POLL-DEDUCTUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTAM, internal->external for field CHANGETIME
CALL FUNCTION 'CONVERSION_EXIT_TSTAM_OUTPUT'
  EXPORTING
    input =                      WA_ICL_POLL-CHANGETIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICL_POLL-CHANGETIME.
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_ICL_POLL_STR, 
CLIENT TYPE STRING,
ACTIVE TYPE STRING,
CLAIM TYPE STRING,
POLVNR TYPE STRING,
COVERAGE TYPE STRING,
BENTYPE TYPE STRING,
INSUREDOBJ TYPE STRING,
PRIORITY TYPE STRING,
BENTYPE_REF TYPE STRING,
CMC_RULE TYPE STRING,
LIMIT TYPE STRING,
LIMAMT TYPE STRING,
LIMUNIT TYPE STRING,
DEDUCTIBLE TYPE STRING,
DEDUCTAMOUNT TYPE STRING,
DEDUCTUNIT TYPE STRING,
XLIMIT TYPE STRING,
XLIMAMT TYPE STRING,
XDEDUC TYPE STRING,
XDEDAMT TYPE STRING,
REJREASON TYPE STRING,
DEDUCTPERC TYPE STRING,
SEVERAL TYPE STRING,
MODFTYPE TYPE STRING,
SEQUENCE TYPE STRING,
ASSIGN_GUID TYPE STRING,
TIMERESTRICT TYPE STRING,
XLIMITVALUE TYPE STRING,
RISKCURR_CD TYPE STRING,
BENTYPEN TYPE STRING,
RULENAME TYPE STRING,
REJREASONN TYPE STRING,
CHANGETIME TYPE STRING,
CHANGEDBY TYPE STRING,
DELETED TYPE STRING,
IMEMTABIX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICL_POLL_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_ICL_POLL_STR-CLIENT sy-vline 
WA_ICL_POLL_STR-ACTIVE sy-vline 
WA_ICL_POLL_STR-CLAIM sy-vline 
WA_ICL_POLL_STR-POLVNR sy-vline 
WA_ICL_POLL_STR-COVERAGE sy-vline 
WA_ICL_POLL_STR-BENTYPE sy-vline 
WA_ICL_POLL_STR-INSUREDOBJ sy-vline 
WA_ICL_POLL_STR-PRIORITY sy-vline 
WA_ICL_POLL_STR-BENTYPE_REF sy-vline 
WA_ICL_POLL_STR-CMC_RULE sy-vline 
WA_ICL_POLL_STR-LIMIT sy-vline 
WA_ICL_POLL_STR-LIMAMT sy-vline 
WA_ICL_POLL_STR-LIMUNIT sy-vline 
WA_ICL_POLL_STR-DEDUCTIBLE sy-vline 
WA_ICL_POLL_STR-DEDUCTAMOUNT sy-vline 
WA_ICL_POLL_STR-DEDUCTUNIT sy-vline 
WA_ICL_POLL_STR-XLIMIT sy-vline 
WA_ICL_POLL_STR-XLIMAMT sy-vline 
WA_ICL_POLL_STR-XDEDUC sy-vline 
WA_ICL_POLL_STR-XDEDAMT sy-vline 
WA_ICL_POLL_STR-REJREASON sy-vline 
WA_ICL_POLL_STR-DEDUCTPERC sy-vline 
WA_ICL_POLL_STR-SEVERAL sy-vline 
WA_ICL_POLL_STR-MODFTYPE sy-vline 
WA_ICL_POLL_STR-SEQUENCE sy-vline 
WA_ICL_POLL_STR-ASSIGN_GUID sy-vline 
WA_ICL_POLL_STR-TIMERESTRICT sy-vline 
WA_ICL_POLL_STR-XLIMITVALUE sy-vline 
WA_ICL_POLL_STR-RISKCURR_CD sy-vline 
WA_ICL_POLL_STR-BENTYPEN sy-vline 
WA_ICL_POLL_STR-RULENAME sy-vline 
WA_ICL_POLL_STR-REJREASONN sy-vline 
WA_ICL_POLL_STR-CHANGETIME sy-vline 
WA_ICL_POLL_STR-CHANGEDBY sy-vline 
WA_ICL_POLL_STR-DELETED sy-vline 
WA_ICL_POLL_STR-IMEMTABIX sy-vline      INTO ld_text SEPARATED BY SPACE.

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