ABAP Select data from SAP table ICLH_ICLH46_OLD into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ICLH_ICLH46_OLD 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 ICLH_ICLH46_OLD. 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 ICLH_ICLH46_OLD 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_ICLH_ICLH46_OLD TYPE STANDARD TABLE OF ICLH_ICLH46_OLD,
      WA_ICLH_ICLH46_OLD TYPE ICLH_ICLH46_OLD,
      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: <ICLH_ICLH46_OLD> TYPE ICLH_ICLH46_OLD.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ICLH_ICLH46_OLD.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ICLH_ICLH46_OLD
  INTO TABLE IT_ICLH_ICLH46_OLD.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICLH_ICLH46_OLD
*  INTO TABLE @DATA(IT_ICLH_ICLH46_OLD2).
*--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_ICLH_ICLH46_OLD INDEX 1 INTO DATA(WA_ICLH_ICLH46_OLD2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ICLH_ICLH46_OLD ASSIGNING <ICLH_ICLH46_OLD>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICLH_ICLH46_OLD>-XSELECT = 1.
<ICLH_ICLH46_OLD>-PDOCTYPE = 1.
<ICLH_ICLH46_OLD>-XINVPAY = 1.
<ICLH_ICLH46_OLD>-SUBCLAIM = 1.
<ICLH_ICLH46_OLD>-PROCUREMENT = 1.

ENDLOOP.

LOOP AT IT_ICLH_ICLH46_OLD INTO WA_ICLH_ICLH46_OLD.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICLH_ICLH46_OLD-ITEM, sy-vline,
  WA_ICLH_ICLH46_OLD-POSNR_INV, sy-vline,
  WA_ICLH_ICLH46_OLD-POSNR, sy-vline,
  WA_ICLH_ICLH46_OLD-POSNRN_INV, sy-vline,
  WA_ICLH_ICLH46_OLD-POSNRN, sy-vline,
  WA_ICLH_ICLH46_OLD-DAILY_APPROVED, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICLH_ICLH46_OLD 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_ICLH_ICLH46_OLD 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_ICLH_ICLH46_OLD INTO WA_ICLH_ICLH46_OLD.


*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 CUNIT, internal->external for field EVQUANUNIT_INV
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ICLH_ICLH46_OLD-EVQUANUNIT_INV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICLH_ICLH46_OLD-EVQUANUNIT_INV.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field EVQUANUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ICLH_ICLH46_OLD-EVQUANUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICLH_ICLH46_OLD-EVQUANUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CLAIM, internal->external for field CLAIM_APPR_INV
CALL FUNCTION 'CONVERSION_EXIT_CLAIM_OUTPUT'
  EXPORTING
    input =                      WA_ICLH_ICLH46_OLD-CLAIM_APPR_INV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICLH_ICLH46_OLD-CLAIM_APPR_INV.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CLAIM, internal->external for field CLAIM_APPR
CALL FUNCTION 'CONVERSION_EXIT_CLAIM_OUTPUT'
  EXPORTING
    input =                      WA_ICLH_ICLH46_OLD-CLAIM_APPR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICLH_ICLH46_OLD-CLAIM_APPR.
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_ICLH_ICLH46_OLD_STR, 
XSELECT TYPE STRING,
PDOCTYPE TYPE STRING,
XINVPAY TYPE STRING,
SUBCLAIM TYPE STRING,
PROCUREMENT TYPE STRING,
ITEM TYPE STRING,
POSNR_INV TYPE STRING,
POSNR TYPE STRING,
POSNRN_INV TYPE STRING,
POSNRN TYPE STRING,
DAILY_APPROVED TYPE STRING,
WEEKLY_APPROVED TYPE STRING,
MONTHLY_APPROVED TYPE STRING,
QUAN_APPROVED TYPE STRING,
QUAN_SUM TYPE STRING,
EVQUANUNIT_INV TYPE STRING,
EVQUANUNIT TYPE STRING,
EVAMTPERUNIT_INV TYPE STRING,
EVAMTPERUNIT TYPE STRING,
EVQUANTITY_INV TYPE STRING,
EVQUANTITY TYPE STRING,
EVAMOUNT_INV TYPE STRING,
EVAMOUNT TYPE STRING,
NETAMOUNT_INV TYPE STRING,
NETAMOUNT TYPE STRING,
GROSAMOUNT_INV TYPE STRING,
GROSAMOUNT TYPE STRING,
DISCOUNTAMOUNT_INV TYPE STRING,
DISCOUNTAMOUNT TYPE STRING,
DISCOUNTPERCENT_INV TYPE STRING,
DISCOUNTPERCENT TYPE STRING,
XDISCOUNTPCT_INV TYPE STRING,
XDISCOUNTPCT TYPE STRING,
CONTRIBAMOUNT_INV TYPE STRING,
CONTRIBAMOUNT TYPE STRING,
XCONTRIBAMOUNT_INV TYPE STRING,
XCONTRIBAMOUNT TYPE STRING,
CONTRIBPERCENT_INV TYPE STRING,
CONTRIBPERCENT TYPE STRING,
EVCURR TYPE STRING,
CLAIM_APPR_INV TYPE STRING,
CLAIM_APPR TYPE STRING,
SUBCLAIM_APPR_INV TYPE STRING,
SUBCLAIM_APPR TYPE STRING,
PROCUREMENT_APPR_INV TYPE STRING,
PROCUREMENT_APPR TYPE STRING,
ITEM_APPR_INV TYPE STRING,
ITEM_APPR TYPE STRING,
STARTDATE_INV TYPE STRING,
STARTDATE TYPE STRING,
ENDDATE_INV TYPE STRING,
ENDDATE TYPE STRING,
REFNO_INV TYPE STRING,
REFNO TYPE STRING,
STATUS_INV TYPE STRING,
STATUS TYPE STRING,
ITEMUSE_INV TYPE STRING,
TAXCODE_INV TYPE STRING,
XERROR TYPE STRING,
COLOR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICLH_ICLH46_OLD_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_ICLH_ICLH46_OLD_STR-XSELECT sy-vline 
WA_ICLH_ICLH46_OLD_STR-PDOCTYPE sy-vline 
WA_ICLH_ICLH46_OLD_STR-XINVPAY sy-vline 
WA_ICLH_ICLH46_OLD_STR-SUBCLAIM sy-vline 
WA_ICLH_ICLH46_OLD_STR-PROCUREMENT sy-vline 
WA_ICLH_ICLH46_OLD_STR-ITEM sy-vline 
WA_ICLH_ICLH46_OLD_STR-POSNR_INV sy-vline 
WA_ICLH_ICLH46_OLD_STR-POSNR sy-vline 
WA_ICLH_ICLH46_OLD_STR-POSNRN_INV sy-vline 
WA_ICLH_ICLH46_OLD_STR-POSNRN sy-vline 
WA_ICLH_ICLH46_OLD_STR-DAILY_APPROVED sy-vline 
WA_ICLH_ICLH46_OLD_STR-WEEKLY_APPROVED sy-vline 
WA_ICLH_ICLH46_OLD_STR-MONTHLY_APPROVED sy-vline 
WA_ICLH_ICLH46_OLD_STR-QUAN_APPROVED sy-vline 
WA_ICLH_ICLH46_OLD_STR-QUAN_SUM sy-vline 
WA_ICLH_ICLH46_OLD_STR-EVQUANUNIT_INV sy-vline 
WA_ICLH_ICLH46_OLD_STR-EVQUANUNIT sy-vline 
WA_ICLH_ICLH46_OLD_STR-EVAMTPERUNIT_INV sy-vline 
WA_ICLH_ICLH46_OLD_STR-EVAMTPERUNIT sy-vline 
WA_ICLH_ICLH46_OLD_STR-EVQUANTITY_INV sy-vline 
WA_ICLH_ICLH46_OLD_STR-EVQUANTITY sy-vline 
WA_ICLH_ICLH46_OLD_STR-EVAMOUNT_INV sy-vline 
WA_ICLH_ICLH46_OLD_STR-EVAMOUNT sy-vline 
WA_ICLH_ICLH46_OLD_STR-NETAMOUNT_INV sy-vline 
WA_ICLH_ICLH46_OLD_STR-NETAMOUNT sy-vline 
WA_ICLH_ICLH46_OLD_STR-GROSAMOUNT_INV sy-vline 
WA_ICLH_ICLH46_OLD_STR-GROSAMOUNT sy-vline 
WA_ICLH_ICLH46_OLD_STR-DISCOUNTAMOUNT_INV sy-vline 
WA_ICLH_ICLH46_OLD_STR-DISCOUNTAMOUNT sy-vline 
WA_ICLH_ICLH46_OLD_STR-DISCOUNTPERCENT_INV sy-vline 
WA_ICLH_ICLH46_OLD_STR-DISCOUNTPERCENT sy-vline 
WA_ICLH_ICLH46_OLD_STR-XDISCOUNTPCT_INV sy-vline 
WA_ICLH_ICLH46_OLD_STR-XDISCOUNTPCT sy-vline 
WA_ICLH_ICLH46_OLD_STR-CONTRIBAMOUNT_INV sy-vline 
WA_ICLH_ICLH46_OLD_STR-CONTRIBAMOUNT sy-vline 
WA_ICLH_ICLH46_OLD_STR-XCONTRIBAMOUNT_INV sy-vline 
WA_ICLH_ICLH46_OLD_STR-XCONTRIBAMOUNT sy-vline 
WA_ICLH_ICLH46_OLD_STR-CONTRIBPERCENT_INV sy-vline 
WA_ICLH_ICLH46_OLD_STR-CONTRIBPERCENT sy-vline 
WA_ICLH_ICLH46_OLD_STR-EVCURR sy-vline 
WA_ICLH_ICLH46_OLD_STR-CLAIM_APPR_INV sy-vline 
WA_ICLH_ICLH46_OLD_STR-CLAIM_APPR sy-vline 
WA_ICLH_ICLH46_OLD_STR-SUBCLAIM_APPR_INV sy-vline 
WA_ICLH_ICLH46_OLD_STR-SUBCLAIM_APPR sy-vline 
WA_ICLH_ICLH46_OLD_STR-PROCUREMENT_APPR_INV sy-vline 
WA_ICLH_ICLH46_OLD_STR-PROCUREMENT_APPR sy-vline 
WA_ICLH_ICLH46_OLD_STR-ITEM_APPR_INV sy-vline 
WA_ICLH_ICLH46_OLD_STR-ITEM_APPR sy-vline 
WA_ICLH_ICLH46_OLD_STR-STARTDATE_INV sy-vline 
WA_ICLH_ICLH46_OLD_STR-STARTDATE sy-vline 
WA_ICLH_ICLH46_OLD_STR-ENDDATE_INV sy-vline 
WA_ICLH_ICLH46_OLD_STR-ENDDATE sy-vline 
WA_ICLH_ICLH46_OLD_STR-REFNO_INV sy-vline 
WA_ICLH_ICLH46_OLD_STR-REFNO sy-vline 
WA_ICLH_ICLH46_OLD_STR-STATUS_INV sy-vline 
WA_ICLH_ICLH46_OLD_STR-STATUS sy-vline 
WA_ICLH_ICLH46_OLD_STR-ITEMUSE_INV sy-vline 
WA_ICLH_ICLH46_OLD_STR-TAXCODE_INV sy-vline 
WA_ICLH_ICLH46_OLD_STR-XERROR sy-vline 
WA_ICLH_ICLH46_OLD_STR-COLOR sy-vline      INTO ld_text SEPARATED BY SPACE.

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