ABAP Select data from SAP table ICS_POLS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICS_POLS
*  INTO TABLE @DATA(IT_ICS_POLS2).
*--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_ICS_POLS INDEX 1 INTO DATA(WA_ICS_POLS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICS_POLS>-ENTRYEXPRESSION = 1.
<ICS_POLS>-INSURED_SUM = 1.
<ICS_POLS>-XINSSUM = 1.
<ICS_POLS>-SUMEXPRESSION = 1.
<ICS_POLS>-MINSUM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICS_POLS-MINEXPRESSION, sy-vline,
  WA_ICS_POLS-MAXSUM, sy-vline,
  WA_ICS_POLS-MAXEXPRESSION, sy-vline,
  WA_ICS_POLS-CALCEXPRESSION, sy-vline,
  WA_ICS_POLS-XCALCEXP, sy-vline,
  WA_ICS_POLS-RBENTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICS_POLS 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_ICS_POLS 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_ICS_POLS INTO WA_ICS_POLS.


*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_ICS_POLS_STR, 
ENTRYEXPRESSION TYPE STRING,
INSURED_SUM TYPE STRING,
XINSSUM TYPE STRING,
SUMEXPRESSION TYPE STRING,
MINSUM TYPE STRING,
MINEXPRESSION TYPE STRING,
MAXSUM TYPE STRING,
MAXEXPRESSION TYPE STRING,
CALCEXPRESSION TYPE STRING,
XCALCEXP TYPE STRING,
RBENTYPE TYPE STRING,
RCOVTYPE TYPE STRING,
PERCENT TYPE STRING,
SUMCALCORDER TYPE STRING,
ASSIGN_GUID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICS_POLS_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_ICS_POLS_STR-ENTRYEXPRESSION sy-vline 
WA_ICS_POLS_STR-INSURED_SUM sy-vline 
WA_ICS_POLS_STR-XINSSUM sy-vline 
WA_ICS_POLS_STR-SUMEXPRESSION sy-vline 
WA_ICS_POLS_STR-MINSUM sy-vline 
WA_ICS_POLS_STR-MINEXPRESSION sy-vline 
WA_ICS_POLS_STR-MAXSUM sy-vline 
WA_ICS_POLS_STR-MAXEXPRESSION sy-vline 
WA_ICS_POLS_STR-CALCEXPRESSION sy-vline 
WA_ICS_POLS_STR-XCALCEXP sy-vline 
WA_ICS_POLS_STR-RBENTYPE sy-vline 
WA_ICS_POLS_STR-RCOVTYPE sy-vline 
WA_ICS_POLS_STR-PERCENT sy-vline 
WA_ICS_POLS_STR-SUMCALCORDER sy-vline 
WA_ICS_POLS_STR-ASSIGN_GUID sy-vline      INTO ld_text SEPARATED BY SPACE.

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