ABAP Select data from SAP table ICL_POLS_COV_DISP_ALV_S_UI into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ICL_POLS_COV_DISP_ALV_S_UI 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_POLS_COV_DISP_ALV_S_UI. 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_POLS_COV_DISP_ALV_S_UI 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_POLS_COV_DISP_ALV_S_UI TYPE STANDARD TABLE OF ICL_POLS_COV_DISP_ALV_S_UI,
      WA_ICL_POLS_COV_DISP_ALV_S_UI TYPE ICL_POLS_COV_DISP_ALV_S_UI,
      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_POLS_COV_DISP_ALV_S_UI> TYPE ICL_POLS_COV_DISP_ALV_S_UI.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICL_POLS_COV_DISP_ALV_S_UI
*  INTO TABLE @DATA(IT_ICL_POLS_COV_DISP_ALV_S_UI2).
*--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_POLS_COV_DISP_ALV_S_UI INDEX 1 INTO DATA(WA_ICL_POLS_COV_DISP_ALV_S_UI2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICL_POLS_COV_DISP_ALV_S_UI-COVERAGE, sy-vline,
  WA_ICL_POLS_COV_DISP_ALV_S_UI-COVERAGEN, sy-vline,
  WA_ICL_POLS_COV_DISP_ALV_S_UI-COVTYPE, sy-vline,
  WA_ICL_POLS_COV_DISP_ALV_S_UI-COVTYPEN, sy-vline,
  WA_ICL_POLS_COV_DISP_ALV_S_UI-INCEPTIOND, sy-vline,
  WA_ICL_POLS_COV_DISP_ALV_S_UI-INCEPTIONT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICL_POLS_COV_DISP_ALV_S_UI 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_POLS_COV_DISP_ALV_S_UI 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_POLS_COV_DISP_ALV_S_UI INTO WA_ICL_POLS_COV_DISP_ALV_S_UI.


*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_POLS_COV_DISP_ALV_S_UI-CLAIM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICL_POLS_COV_DISP_ALV_S_UI-CLAIM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field RISKEXCHRATE_VL
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_ICL_POLS_COV_DISP_ALV_S_UI-RISKEXCHRATE_VL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICL_POLS_COV_DISP_ALV_S_UI-RISKEXCHRATE_VL.
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_POLS_COV_DISP_ALV_S_UI_STR, 
DETAIL_SELECT TYPE STRING,
CLIENT TYPE STRING,
ACTIVE TYPE STRING,
CLAIM TYPE STRING,
POLVNR TYPE STRING,
COVERAGE TYPE STRING,
COVERAGEN TYPE STRING,
COVTYPE TYPE STRING,
COVTYPEN TYPE STRING,
INCEPTIOND TYPE STRING,
INCEPTIONT TYPE STRING,
EXPIRYD TYPE STRING,
EXPIRYT TYPE STRING,
STATUS TYPE STRING,
SERVCATID TYPE STRING,
RISKCURR_CD TYPE STRING,
RISKEXCHRATE_VL TYPE STRING,
RISKEXCHRATE_DT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICL_POLS_COV_DISP_ALV_S_UI_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_POLS_COV_DISP_ALV_S_UI_STR-DETAIL_SELECT sy-vline 
WA_ICL_POLS_COV_DISP_ALV_S_UI_STR-CLIENT sy-vline 
WA_ICL_POLS_COV_DISP_ALV_S_UI_STR-ACTIVE sy-vline 
WA_ICL_POLS_COV_DISP_ALV_S_UI_STR-CLAIM sy-vline 
WA_ICL_POLS_COV_DISP_ALV_S_UI_STR-POLVNR sy-vline 
WA_ICL_POLS_COV_DISP_ALV_S_UI_STR-COVERAGE sy-vline 
WA_ICL_POLS_COV_DISP_ALV_S_UI_STR-COVERAGEN sy-vline 
WA_ICL_POLS_COV_DISP_ALV_S_UI_STR-COVTYPE sy-vline 
WA_ICL_POLS_COV_DISP_ALV_S_UI_STR-COVTYPEN sy-vline 
WA_ICL_POLS_COV_DISP_ALV_S_UI_STR-INCEPTIOND sy-vline 
WA_ICL_POLS_COV_DISP_ALV_S_UI_STR-INCEPTIONT sy-vline 
WA_ICL_POLS_COV_DISP_ALV_S_UI_STR-EXPIRYD sy-vline 
WA_ICL_POLS_COV_DISP_ALV_S_UI_STR-EXPIRYT sy-vline 
WA_ICL_POLS_COV_DISP_ALV_S_UI_STR-STATUS sy-vline 
WA_ICL_POLS_COV_DISP_ALV_S_UI_STR-SERVCATID sy-vline 
WA_ICL_POLS_COV_DISP_ALV_S_UI_STR-RISKCURR_CD sy-vline 
WA_ICL_POLS_COV_DISP_ALV_S_UI_STR-RISKEXCHRATE_VL sy-vline 
WA_ICL_POLS_COV_DISP_ALV_S_UI_STR-RISKEXCHRATE_DT sy-vline      INTO ld_text SEPARATED BY SPACE.

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