ABAP Select data from SAP table ICUSTCMPL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICUSTCMPL
*  INTO TABLE @DATA(IT_ICUSTCMPL2).
*--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_ICUSTCMPL INDEX 1 INTO DATA(WA_ICUSTCMPL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICUSTCMPL>-MANDT = 1.
<ICUSTCMPL>-SERVICEOBJECTTYPE = 1.
<ICUSTCMPL>-CUSTOMERCOMPLAINT = 1.
<ICUSTCMPL>-CUSTOMERCOMPLAINTUUID = 1.
<ICUSTCMPL>-CUSTCMPLDESCRIPTION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICUSTCMPL-CUSTCMPLTYPE, sy-vline,
  WA_ICUSTCMPL-SOLDTOPARTY, sy-vline,
  WA_ICUSTCMPL-SOLDTOPARTYFULLNAME, sy-vline,
  WA_ICUSTCMPL-RESPONSIBLEEMPLOYEE, sy-vline,
  WA_ICUSTCMPL-CONTACTPERSON, sy-vline,
  WA_ICUSTCMPL-CUSTCMPLREPORTEDBYBP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICUSTCMPL 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_ICUSTCMPL 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_ICUSTCMPL INTO WA_ICUSTCMPL.


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

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

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

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

*Conversion exit ALPHA, internal->external for field CUSTCMPLREPORTEDBYBP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICUSTCMPL-CUSTCMPLREPORTEDBYBP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICUSTCMPL-CUSTCMPLREPORTEDBYBP.
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_ICUSTCMPL_STR, 
MANDT TYPE STRING,
SERVICEOBJECTTYPE TYPE STRING,
CUSTOMERCOMPLAINT TYPE STRING,
CUSTOMERCOMPLAINTUUID TYPE STRING,
CUSTCMPLDESCRIPTION TYPE STRING,
CUSTCMPLTYPE TYPE STRING,
SOLDTOPARTY TYPE STRING,
SOLDTOPARTYFULLNAME TYPE STRING,
RESPONSIBLEEMPLOYEE TYPE STRING,
CONTACTPERSON TYPE STRING,
CUSTCMPLREPORTEDBYBP TYPE STRING,
CUSTCMPLPRIORITY TYPE STRING,
CUSTCMPLURGENCY TYPE STRING,
CUSTCMPLSTATUS TYPE STRING,
CUSTCMPLISOPEN TYPE STRING,
CUSTCMPLHASERROR TYPE STRING,
CUSTCMPLCREATIONDATETIME TYPE STRING,
CUSTCMPLCHANGEDDATETIME TYPE STRING,
CUSTCMPLCREATEDBYUSER TYPE STRING,
CUSTCMPLCHANGEDBYUSER TYPE STRING,
CUSTCMPLREQDSOLUTIONDATETIME TYPE STRING,
CUSTCMPLPROCGSTARTDATETIME TYPE STRING,
CUSTCMPLPROCGENDDATETIME TYPE STRING,
CUSTCMPLREQUESTEDSOLUTION TYPE STRING,
CUSTCMPLISSUECAUSEDBY TYPE STRING,
CUSTCMPLIMPACT TYPE STRING,
CUSTCMPLREASON TYPE STRING,
TEXTOBJECTKEY TYPE STRING,
SOLDTOPARTYEXTREFID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICUSTCMPL_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_ICUSTCMPL_STR-MANDT sy-vline 
WA_ICUSTCMPL_STR-SERVICEOBJECTTYPE sy-vline 
WA_ICUSTCMPL_STR-CUSTOMERCOMPLAINT sy-vline 
WA_ICUSTCMPL_STR-CUSTOMERCOMPLAINTUUID sy-vline 
WA_ICUSTCMPL_STR-CUSTCMPLDESCRIPTION sy-vline 
WA_ICUSTCMPL_STR-CUSTCMPLTYPE sy-vline 
WA_ICUSTCMPL_STR-SOLDTOPARTY sy-vline 
WA_ICUSTCMPL_STR-SOLDTOPARTYFULLNAME sy-vline 
WA_ICUSTCMPL_STR-RESPONSIBLEEMPLOYEE sy-vline 
WA_ICUSTCMPL_STR-CONTACTPERSON sy-vline 
WA_ICUSTCMPL_STR-CUSTCMPLREPORTEDBYBP sy-vline 
WA_ICUSTCMPL_STR-CUSTCMPLPRIORITY sy-vline 
WA_ICUSTCMPL_STR-CUSTCMPLURGENCY sy-vline 
WA_ICUSTCMPL_STR-CUSTCMPLSTATUS sy-vline 
WA_ICUSTCMPL_STR-CUSTCMPLISOPEN sy-vline 
WA_ICUSTCMPL_STR-CUSTCMPLHASERROR sy-vline 
WA_ICUSTCMPL_STR-CUSTCMPLCREATIONDATETIME sy-vline 
WA_ICUSTCMPL_STR-CUSTCMPLCHANGEDDATETIME sy-vline 
WA_ICUSTCMPL_STR-CUSTCMPLCREATEDBYUSER sy-vline 
WA_ICUSTCMPL_STR-CUSTCMPLCHANGEDBYUSER sy-vline 
WA_ICUSTCMPL_STR-CUSTCMPLREQDSOLUTIONDATETIME sy-vline 
WA_ICUSTCMPL_STR-CUSTCMPLPROCGSTARTDATETIME sy-vline 
WA_ICUSTCMPL_STR-CUSTCMPLPROCGENDDATETIME sy-vline 
WA_ICUSTCMPL_STR-CUSTCMPLREQUESTEDSOLUTION sy-vline 
WA_ICUSTCMPL_STR-CUSTCMPLISSUECAUSEDBY sy-vline 
WA_ICUSTCMPL_STR-CUSTCMPLIMPACT sy-vline 
WA_ICUSTCMPL_STR-CUSTCMPLREASON sy-vline 
WA_ICUSTCMPL_STR-TEXTOBJECTKEY sy-vline 
WA_ICUSTCMPL_STR-SOLDTOPARTYEXTREFID sy-vline      INTO ld_text SEPARATED BY SPACE.

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