ABAP Select data from SAP table ITOLERANCEITM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ITOLERANCEITM
*  INTO TABLE @DATA(IT_ITOLERANCEITM2).
*--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_ITOLERANCEITM INDEX 1 INTO DATA(WA_ITOLERANCEITM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ITOLERANCEITM>-MANDT = 1.
<ITOLERANCEITM>-ACMTOLERANCEHEADERUUID = 1.
<ITOLERANCEITM>-ACMTOLEVALTABSEQUENCENUMBER = 1.
<ITOLERANCEITM>-ACMUNDERFILLOVERFILLDIRECTION = 1.
<ITOLERANCEITM>-ACMTOLITEMFROMPERCENTAGEVAL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ITOLERANCEITM-ACMTOLITEMTOPERCENTAGEVAL, sy-vline,
  WA_ITOLERANCEITM-UNITOFMEASURE, sy-vline,
  WA_ITOLERANCEITM-ACMTRADINGCONTRACTTOLQUANTITY, sy-vline,
  WA_ITOLERANCEITM-TRADINGCONTRTOLERANCELIMITVAL, sy-vline,
  WA_ITOLERANCEITM-ACMTOLITEMPRICEAPPLICATION, sy-vline,
  WA_ITOLERANCEITM-ACMREPLACEMENTPRICETYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ITOLERANCEITM 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_ITOLERANCEITM 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_ITOLERANCEITM INTO WA_ITOLERANCEITM.


*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 UNITOFMEASURE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ITOLERANCEITM-UNITOFMEASURE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ITOLERANCEITM-UNITOFMEASURE.
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_ITOLERANCEITM_STR, 
MANDT TYPE STRING,
ACMTOLERANCEHEADERUUID TYPE STRING,
ACMTOLEVALTABSEQUENCENUMBER TYPE STRING,
ACMUNDERFILLOVERFILLDIRECTION TYPE STRING,
ACMTOLITEMFROMPERCENTAGEVAL TYPE STRING,
ACMTOLITEMTOPERCENTAGEVAL TYPE STRING,
UNITOFMEASURE TYPE STRING,
ACMTRADINGCONTRACTTOLQUANTITY TYPE STRING,
TRADINGCONTRTOLERANCELIMITVAL TYPE STRING,
ACMTOLITEMPRICEAPPLICATION TYPE STRING,
ACMREPLACEMENTPRICETYPE TYPE STRING,
ACMTOLITEMCONSUMPTIONRULE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ITOLERANCEITM_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_ITOLERANCEITM_STR-MANDT sy-vline 
WA_ITOLERANCEITM_STR-ACMTOLERANCEHEADERUUID sy-vline 
WA_ITOLERANCEITM_STR-ACMTOLEVALTABSEQUENCENUMBER sy-vline 
WA_ITOLERANCEITM_STR-ACMUNDERFILLOVERFILLDIRECTION sy-vline 
WA_ITOLERANCEITM_STR-ACMTOLITEMFROMPERCENTAGEVAL sy-vline 
WA_ITOLERANCEITM_STR-ACMTOLITEMTOPERCENTAGEVAL sy-vline 
WA_ITOLERANCEITM_STR-UNITOFMEASURE sy-vline 
WA_ITOLERANCEITM_STR-ACMTRADINGCONTRACTTOLQUANTITY sy-vline 
WA_ITOLERANCEITM_STR-TRADINGCONTRTOLERANCELIMITVAL sy-vline 
WA_ITOLERANCEITM_STR-ACMTOLITEMPRICEAPPLICATION sy-vline 
WA_ITOLERANCEITM_STR-ACMREPLACEMENTPRICETYPE sy-vline 
WA_ITOLERANCEITM_STR-ACMTOLITEMCONSUMPTIONRULE sy-vline      INTO ld_text SEPARATED BY SPACE.

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