ABAP Select data from SAP table ICL_POLO into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ICL_POLO 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_POLO. 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_POLO 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_POLO TYPE STANDARD TABLE OF ICL_POLO,
      WA_ICL_POLO TYPE ICL_POLO,
      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_POLO> TYPE ICL_POLO.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICL_POLO
*  INTO TABLE @DATA(IT_ICL_POLO2).
*--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_POLO INDEX 1 INTO DATA(WA_ICL_POLO2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICL_POLO-PROPCAT, sy-vline,
  WA_ICL_POLO-PROPERTY, sy-vline,
  WA_ICL_POLO-IOBTYPE, sy-vline,
  WA_ICL_POLO-DESCRIPTION, sy-vline,
  WA_ICL_POLO-JOBGR, sy-vline,
  WA_ICL_POLO-GEBNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICL_POLO 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_POLO 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_POLO INTO WA_ICL_POLO.


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

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

*Conversion exit TSTAM, internal->external for field CHANGETIME
CALL FUNCTION 'CONVERSION_EXIT_TSTAM_OUTPUT'
  EXPORTING
    input =                      WA_ICL_POLO-CHANGETIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICL_POLO-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_POLO_STR, 
CLIENT TYPE STRING,
ACTIVE TYPE STRING,
CLAIM TYPE STRING,
POLVNR TYPE STRING,
INSUREDOBJ TYPE STRING,
PROPCAT TYPE STRING,
PROPERTY TYPE STRING,
IOBTYPE TYPE STRING,
DESCRIPTION TYPE STRING,
JOBGR TYPE STRING,
GEBNR TYPE STRING,
ASSIGN_GUID TYPE STRING,
INSOBJNR_TT TYPE STRING,
IOBTYPEN TYPE STRING,
DESCLN1 TYPE STRING,
DESCLN2 TYPE STRING,
LIENHOLDER TYPE STRING,
LIENHOLDERN TYPE STRING,
XMARK TYPE STRING,
CHANGETIME TYPE STRING,
CHANGEDBY TYPE STRING,
DELETED TYPE STRING,
IMEMTABIX TYPE STRING,
POLSGUID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICL_POLO_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_POLO_STR-CLIENT sy-vline 
WA_ICL_POLO_STR-ACTIVE sy-vline 
WA_ICL_POLO_STR-CLAIM sy-vline 
WA_ICL_POLO_STR-POLVNR sy-vline 
WA_ICL_POLO_STR-INSUREDOBJ sy-vline 
WA_ICL_POLO_STR-PROPCAT sy-vline 
WA_ICL_POLO_STR-PROPERTY sy-vline 
WA_ICL_POLO_STR-IOBTYPE sy-vline 
WA_ICL_POLO_STR-DESCRIPTION sy-vline 
WA_ICL_POLO_STR-JOBGR sy-vline 
WA_ICL_POLO_STR-GEBNR sy-vline 
WA_ICL_POLO_STR-ASSIGN_GUID sy-vline 
WA_ICL_POLO_STR-INSOBJNR_TT sy-vline 
WA_ICL_POLO_STR-IOBTYPEN sy-vline 
WA_ICL_POLO_STR-DESCLN1 sy-vline 
WA_ICL_POLO_STR-DESCLN2 sy-vline 
WA_ICL_POLO_STR-LIENHOLDER sy-vline 
WA_ICL_POLO_STR-LIENHOLDERN sy-vline 
WA_ICL_POLO_STR-XMARK sy-vline 
WA_ICL_POLO_STR-CHANGETIME sy-vline 
WA_ICL_POLO_STR-CHANGEDBY sy-vline 
WA_ICL_POLO_STR-DELETED sy-vline 
WA_ICL_POLO_STR-IMEMTABIX sy-vline 
WA_ICL_POLO_STR-POLSGUID sy-vline      INTO ld_text SEPARATED BY SPACE.

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