ABAP Select data from SAP table ICLH_ICLH62_CORE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ICLH_ICLH62_CORE 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_ICLH62_CORE. 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_ICLH62_CORE 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_ICLH62_CORE TYPE STANDARD TABLE OF ICLH_ICLH62_CORE,
      WA_ICLH_ICLH62_CORE TYPE ICLH_ICLH62_CORE,
      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_ICLH62_CORE> TYPE ICLH_ICLH62_CORE.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ICLH_ICLH62_CORE.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ICLH_ICLH62_CORE
  INTO TABLE IT_ICLH_ICLH62_CORE.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICLH_ICLH62_CORE
*  INTO TABLE @DATA(IT_ICLH_ICLH62_CORE2).
*--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_ICLH62_CORE INDEX 1 INTO DATA(WA_ICLH_ICLH62_CORE2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ICLH_ICLH62_CORE ASSIGNING <ICLH_ICLH62_CORE>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICLH_ICLH62_CORE>-EVAMTPERUNIT = 1.
<ICLH_ICLH62_CORE>-DAILY_APPROVED = 1.
<ICLH_ICLH62_CORE>-WEEKLY_APPROVED = 1.
<ICLH_ICLH62_CORE>-MONTHLY_APPROVED = 1.
<ICLH_ICLH62_CORE>-QUAN_APPROVED = 1.

ENDLOOP.

LOOP AT IT_ICLH_ICLH62_CORE INTO WA_ICLH_ICLH62_CORE.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICLH_ICLH62_CORE-QUAN_SUM, sy-vline,
  WA_ICLH_ICLH62_CORE-EVAMOUNT, sy-vline,
  WA_ICLH_ICLH62_CORE-EVQUANUNIT, sy-vline,
  WA_ICLH_ICLH62_CORE-EVQUANTITY, sy-vline,
  WA_ICLH_ICLH62_CORE-DISCOUNTAMOUNT, sy-vline,
  WA_ICLH_ICLH62_CORE-DISCOUNTPERCENT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICLH_ICLH62_CORE 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_ICLH62_CORE 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_ICLH62_CORE INTO WA_ICLH_ICLH62_CORE.


*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
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ICLH_ICLH62_CORE-EVQUANUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICLH_ICLH62_CORE-EVQUANUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CLAIM, internal->external for field CLAIM_APPR
CALL FUNCTION 'CONVERSION_EXIT_CLAIM_OUTPUT'
  EXPORTING
    input =                      WA_ICLH_ICLH62_CORE-CLAIM_APPR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICLH_ICLH62_CORE-CLAIM_APPR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ICLDC, internal->external for field SCPOS_VALPERUNIT
CALL FUNCTION 'CONVERSION_EXIT_ICLDC_OUTPUT'
  EXPORTING
    input =                      WA_ICLH_ICLH62_CORE-SCPOS_VALPERUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICLH_ICLH62_CORE-SCPOS_VALPERUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field SCQUANUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ICLH_ICLH62_CORE-SCQUANUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICLH_ICLH62_CORE-SCQUANUNIT.
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_ICLH62_CORE_STR, 
EVAMTPERUNIT TYPE STRING,
DAILY_APPROVED TYPE STRING,
WEEKLY_APPROVED TYPE STRING,
MONTHLY_APPROVED TYPE STRING,
QUAN_APPROVED TYPE STRING,
QUAN_SUM TYPE STRING,
EVAMOUNT TYPE STRING,
EVQUANUNIT TYPE STRING,
EVQUANTITY TYPE STRING,
DISCOUNTAMOUNT TYPE STRING,
DISCOUNTPERCENT TYPE STRING,
XDISCOUNTPCT TYPE STRING,
CONTRIBAMOUNT TYPE STRING,
XCONTRIBAMOUNT TYPE STRING,
CONTRIBPERCENT TYPE STRING,
EVCURR TYPE STRING,
CLAIM_APPR TYPE STRING,
SUBCLAIM_APPR TYPE STRING,
PROCUREMENT_APPR TYPE STRING,
ITEM_APPR TYPE STRING,
STARTDATE TYPE STRING,
ENDDATE TYPE STRING,
REFNO TYPE STRING,
STATUS TYPE STRING,
ITEMUSE TYPE STRING,
TAXCODE TYPE STRING,
XERROR TYPE STRING,
COLOR TYPE STRING,
XREIMBURSE TYPE STRING,
SEQNUM TYPE STRING,
DNUMBER TYPE STRING,
FACTOR TYPE STRING,
SINGLE_AMOUNT TYPE STRING,
NUM_OF_DECPL TYPE STRING,
SCPOS_VALPERUNIT TYPE STRING,
SCQUANTITY TYPE STRING,
SCQUANUNIT TYPE STRING,
DESCRIPTION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICLH_ICLH62_CORE_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_ICLH62_CORE_STR-EVAMTPERUNIT sy-vline 
WA_ICLH_ICLH62_CORE_STR-DAILY_APPROVED sy-vline 
WA_ICLH_ICLH62_CORE_STR-WEEKLY_APPROVED sy-vline 
WA_ICLH_ICLH62_CORE_STR-MONTHLY_APPROVED sy-vline 
WA_ICLH_ICLH62_CORE_STR-QUAN_APPROVED sy-vline 
WA_ICLH_ICLH62_CORE_STR-QUAN_SUM sy-vline 
WA_ICLH_ICLH62_CORE_STR-EVAMOUNT sy-vline 
WA_ICLH_ICLH62_CORE_STR-EVQUANUNIT sy-vline 
WA_ICLH_ICLH62_CORE_STR-EVQUANTITY sy-vline 
WA_ICLH_ICLH62_CORE_STR-DISCOUNTAMOUNT sy-vline 
WA_ICLH_ICLH62_CORE_STR-DISCOUNTPERCENT sy-vline 
WA_ICLH_ICLH62_CORE_STR-XDISCOUNTPCT sy-vline 
WA_ICLH_ICLH62_CORE_STR-CONTRIBAMOUNT sy-vline 
WA_ICLH_ICLH62_CORE_STR-XCONTRIBAMOUNT sy-vline 
WA_ICLH_ICLH62_CORE_STR-CONTRIBPERCENT sy-vline 
WA_ICLH_ICLH62_CORE_STR-EVCURR sy-vline 
WA_ICLH_ICLH62_CORE_STR-CLAIM_APPR sy-vline 
WA_ICLH_ICLH62_CORE_STR-SUBCLAIM_APPR sy-vline 
WA_ICLH_ICLH62_CORE_STR-PROCUREMENT_APPR sy-vline 
WA_ICLH_ICLH62_CORE_STR-ITEM_APPR sy-vline 
WA_ICLH_ICLH62_CORE_STR-STARTDATE sy-vline 
WA_ICLH_ICLH62_CORE_STR-ENDDATE sy-vline 
WA_ICLH_ICLH62_CORE_STR-REFNO sy-vline 
WA_ICLH_ICLH62_CORE_STR-STATUS sy-vline 
WA_ICLH_ICLH62_CORE_STR-ITEMUSE sy-vline 
WA_ICLH_ICLH62_CORE_STR-TAXCODE sy-vline 
WA_ICLH_ICLH62_CORE_STR-XERROR sy-vline 
WA_ICLH_ICLH62_CORE_STR-COLOR sy-vline 
WA_ICLH_ICLH62_CORE_STR-XREIMBURSE sy-vline 
WA_ICLH_ICLH62_CORE_STR-SEQNUM sy-vline 
WA_ICLH_ICLH62_CORE_STR-DNUMBER sy-vline 
WA_ICLH_ICLH62_CORE_STR-FACTOR sy-vline 
WA_ICLH_ICLH62_CORE_STR-SINGLE_AMOUNT sy-vline 
WA_ICLH_ICLH62_CORE_STR-NUM_OF_DECPL sy-vline 
WA_ICLH_ICLH62_CORE_STR-SCPOS_VALPERUNIT sy-vline 
WA_ICLH_ICLH62_CORE_STR-SCQUANTITY sy-vline 
WA_ICLH_ICLH62_CORE_STR-SCQUANUNIT sy-vline 
WA_ICLH_ICLH62_CORE_STR-DESCRIPTION sy-vline      INTO ld_text SEPARATED BY SPACE.

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