ABAP Select data from SAP table ICLHISTDATA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICLHISTDATA
*  INTO TABLE @DATA(IT_ICLHISTDATA2).
*--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_ICLHISTDATA INDEX 1 INTO DATA(WA_ICLHISTDATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICLHISTDATA>-CLIENT = 1.
<ICLHISTDATA>-ACTYEAR = 1.
<ICLHISTDATA>-ACTMONTH = 1.
<ICLHISTDATA>-COMPCODE = 1.
<ICLHISTDATA>-PRDGRP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICLHISTDATA-LINEOFINS, sy-vline,
  WA_ICLHISTDATA-COVERAGE, sy-vline,
  WA_ICLHISTDATA-REGOFFICE, sy-vline,
  WA_ICLHISTDATA-STATE, sy-vline,
  WA_ICLHISTDATA-REPYEAR, sy-vline,
  WA_ICLHISTDATA-REPMONTH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICLHISTDATA 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_ICLHISTDATA 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_ICLHISTDATA INTO WA_ICLHISTDATA.


*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_ICLHISTDATA_STR, 
CLIENT TYPE STRING,
ACTYEAR TYPE STRING,
ACTMONTH TYPE STRING,
COMPCODE TYPE STRING,
PRDGRP TYPE STRING,
LINEOFINS TYPE STRING,
COVERAGE TYPE STRING,
REGOFFICE TYPE STRING,
STATE TYPE STRING,
REPYEAR TYPE STRING,
REPMONTH TYPE STRING,
NOTICECT_CLMNT TYPE STRING,
NOTICECT_COV TYPE STRING,
PAIDLOSS TYPE STRING,
PAIDEXPENSE TYPE STRING,
RESERVECT_CLMNT TYPE STRING,
RESERVECT_COV TYPE STRING,
FIELDRES TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICLHISTDATA_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_ICLHISTDATA_STR-CLIENT sy-vline 
WA_ICLHISTDATA_STR-ACTYEAR sy-vline 
WA_ICLHISTDATA_STR-ACTMONTH sy-vline 
WA_ICLHISTDATA_STR-COMPCODE sy-vline 
WA_ICLHISTDATA_STR-PRDGRP sy-vline 
WA_ICLHISTDATA_STR-LINEOFINS sy-vline 
WA_ICLHISTDATA_STR-COVERAGE sy-vline 
WA_ICLHISTDATA_STR-REGOFFICE sy-vline 
WA_ICLHISTDATA_STR-STATE sy-vline 
WA_ICLHISTDATA_STR-REPYEAR sy-vline 
WA_ICLHISTDATA_STR-REPMONTH sy-vline 
WA_ICLHISTDATA_STR-NOTICECT_CLMNT sy-vline 
WA_ICLHISTDATA_STR-NOTICECT_COV sy-vline 
WA_ICLHISTDATA_STR-PAIDLOSS sy-vline 
WA_ICLHISTDATA_STR-PAIDEXPENSE sy-vline 
WA_ICLHISTDATA_STR-RESERVECT_CLMNT sy-vline 
WA_ICLHISTDATA_STR-RESERVECT_COV sy-vline 
WA_ICLHISTDATA_STR-FIELDRES sy-vline      INTO ld_text SEPARATED BY SPACE.

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