ABAP Select data from SAP table ICRRSPNDNCHSTR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICRRSPNDNCHSTR
*  INTO TABLE @DATA(IT_ICRRSPNDNCHSTR2).
*--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_ICRRSPNDNCHSTR INDEX 1 INTO DATA(WA_ICRRSPNDNCHSTR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICRRSPNDNCHSTR>-MANDT = 1.
<ICRRSPNDNCHSTR>-CORRESPONDENCE = 1.
<ICRRSPNDNCHSTR>-COMPANYCODE = 1.
<ICRRSPNDNCHSTR>-ACCOUNTTYPE = 1.
<ICRRSPNDNCHSTR>-APARACCOUNT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICRRSPNDNCHSTR-ACCOUNTINGDOCUMENT, sy-vline,
  WA_ICRRSPNDNCHSTR-FISCALYEAR, sy-vline,
  WA_ICRRSPNDNCHSTR-CREATEDBYUSER, sy-vline,
  WA_ICRRSPNDNCHSTR-CREATIONDATETIME, sy-vline,
  WA_ICRRSPNDNCHSTR-OUTPUTREQUESTITEMUUID, sy-vline,
  WA_ICRRSPNDNCHSTR-OUTPUTCONTROLAPPLICATIONOBJECT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICRRSPNDNCHSTR 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_ICRRSPNDNCHSTR 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_ICRRSPNDNCHSTR INTO WA_ICRRSPNDNCHSTR.


*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 APARACCOUNT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICRRSPNDNCHSTR-APARACCOUNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICRRSPNDNCHSTR-APARACCOUNT.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit GJAHR, internal->external for field FISCALYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_ICRRSPNDNCHSTR-FISCALYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICRRSPNDNCHSTR-FISCALYEAR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field RECIPIENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICRRSPNDNCHSTR-RECIPIENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICRRSPNDNCHSTR-RECIPIENT.
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_ICRRSPNDNCHSTR_STR, 
MANDT TYPE STRING,
CORRESPONDENCE TYPE STRING,
COMPANYCODE TYPE STRING,
ACCOUNTTYPE TYPE STRING,
APARACCOUNT TYPE STRING,
ACCOUNTINGDOCUMENT TYPE STRING,
FISCALYEAR TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATETIME TYPE STRING,
OUTPUTREQUESTITEMUUID TYPE STRING,
OUTPUTCONTROLAPPLICATIONOBJECT TYPE STRING,
OUTPUTREQUESTITEM TYPE STRING,
CUSTOMERSUPPLIERACCOUNT TYPE STRING,
CORRESPONDENCENAME TYPE STRING,
CORRESPONDENCEREQUESTMODE TYPE STRING,
OUTPUTCONTROLAPPLOBJECTTYPE TYPE STRING,
CORRESPONDENCEFIRSTDATENAME TYPE STRING,
CORRESPONDENCESECONDDATENAME TYPE STRING,
CORRESPONDENCEFIRSTDATE TYPE STRING,
CORRESPONDENCESECONDDATE TYPE STRING,
OUTPUTCHANNEL TYPE STRING,
PRINTQUEUE TYPE STRING,
OUTPUTREQUESTITEMSTATUS TYPE STRING,
OUTPUTREQUESTITEMSTATUSDESCR TYPE STRING,
RECIPIENT TYPE STRING,
RECIPIENTROLE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICRRSPNDNCHSTR_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_ICRRSPNDNCHSTR_STR-MANDT sy-vline 
WA_ICRRSPNDNCHSTR_STR-CORRESPONDENCE sy-vline 
WA_ICRRSPNDNCHSTR_STR-COMPANYCODE sy-vline 
WA_ICRRSPNDNCHSTR_STR-ACCOUNTTYPE sy-vline 
WA_ICRRSPNDNCHSTR_STR-APARACCOUNT sy-vline 
WA_ICRRSPNDNCHSTR_STR-ACCOUNTINGDOCUMENT sy-vline 
WA_ICRRSPNDNCHSTR_STR-FISCALYEAR sy-vline 
WA_ICRRSPNDNCHSTR_STR-CREATEDBYUSER sy-vline 
WA_ICRRSPNDNCHSTR_STR-CREATIONDATETIME sy-vline 
WA_ICRRSPNDNCHSTR_STR-OUTPUTREQUESTITEMUUID sy-vline 
WA_ICRRSPNDNCHSTR_STR-OUTPUTCONTROLAPPLICATIONOBJECT sy-vline 
WA_ICRRSPNDNCHSTR_STR-OUTPUTREQUESTITEM sy-vline 
WA_ICRRSPNDNCHSTR_STR-CUSTOMERSUPPLIERACCOUNT sy-vline 
WA_ICRRSPNDNCHSTR_STR-CORRESPONDENCENAME sy-vline 
WA_ICRRSPNDNCHSTR_STR-CORRESPONDENCEREQUESTMODE sy-vline 
WA_ICRRSPNDNCHSTR_STR-OUTPUTCONTROLAPPLOBJECTTYPE sy-vline 
WA_ICRRSPNDNCHSTR_STR-CORRESPONDENCEFIRSTDATENAME sy-vline 
WA_ICRRSPNDNCHSTR_STR-CORRESPONDENCESECONDDATENAME sy-vline 
WA_ICRRSPNDNCHSTR_STR-CORRESPONDENCEFIRSTDATE sy-vline 
WA_ICRRSPNDNCHSTR_STR-CORRESPONDENCESECONDDATE sy-vline 
WA_ICRRSPNDNCHSTR_STR-OUTPUTCHANNEL sy-vline 
WA_ICRRSPNDNCHSTR_STR-PRINTQUEUE sy-vline 
WA_ICRRSPNDNCHSTR_STR-OUTPUTREQUESTITEMSTATUS sy-vline 
WA_ICRRSPNDNCHSTR_STR-OUTPUTREQUESTITEMSTATUSDESCR sy-vline 
WA_ICRRSPNDNCHSTR_STR-RECIPIENT sy-vline 
WA_ICRRSPNDNCHSTR_STR-RECIPIENTROLE sy-vline      INTO ld_text SEPARATED BY SPACE.

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