ABAP Select data from SAP table ICUSTCNTCTOP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICUSTCNTCTOP
*  INTO TABLE @DATA(IT_ICUSTCNTCTOP2).
*--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_ICUSTCNTCTOP INDEX 1 INTO DATA(WA_ICUSTCNTCTOP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICUSTCNTCTOP>-MANDT = 1.
<ICUSTCNTCTOP>-CUSTOMER = 1.
<ICUSTCNTCTOP>-RELATIONSHIPNUMBER = 1.
<ICUSTCNTCTOP>-BUSINESSPARTNERCOMPANY = 1.
<ICUSTCNTCTOP>-BUSINESSPARTNERPERSON = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICUSTCNTCTOP-PARTNERUUID, sy-vline,
  WA_ICUSTCNTCTOP-CONTACTPERSONFUNCTION, sy-vline,
  WA_ICUSTCNTCTOP-CONTACTPERSONDEPARTMENT, sy-vline,
  WA_ICUSTCNTCTOP-FIRSTNAME, sy-vline,
  WA_ICUSTCNTCTOP-LASTNAME, sy-vline,
  WA_ICUSTCNTCTOP-FULLNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICUSTCNTCTOP 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_ICUSTCNTCTOP 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_ICUSTCNTCTOP INTO WA_ICUSTCNTCTOP.


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

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

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

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

*Conversion exit SXIDN, internal->external for field EMAILADDRESS
CALL FUNCTION 'CONVERSION_EXIT_SXIDN_OUTPUT'
  EXPORTING
    input =                      WA_ICUSTCNTCTOP-EMAILADDRESS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICUSTCNTCTOP-EMAILADDRESS.
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_ICUSTCNTCTOP_STR, 
MANDT TYPE STRING,
CUSTOMER TYPE STRING,
RELATIONSHIPNUMBER TYPE STRING,
BUSINESSPARTNERCOMPANY TYPE STRING,
BUSINESSPARTNERPERSON TYPE STRING,
PARTNERUUID TYPE STRING,
CONTACTPERSONFUNCTION TYPE STRING,
CONTACTPERSONDEPARTMENT TYPE STRING,
FIRSTNAME TYPE STRING,
LASTNAME TYPE STRING,
FULLNAME TYPE STRING,
CONTACTPERSONFUNCTIONNAME TYPE STRING,
CONTACTPERSONDEPARTMENTNAME TYPE STRING,
PHONENUMBER TYPE STRING,
EMAILADDRESS TYPE STRING,
MOBILEPHONENUMBER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICUSTCNTCTOP_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_ICUSTCNTCTOP_STR-MANDT sy-vline 
WA_ICUSTCNTCTOP_STR-CUSTOMER sy-vline 
WA_ICUSTCNTCTOP_STR-RELATIONSHIPNUMBER sy-vline 
WA_ICUSTCNTCTOP_STR-BUSINESSPARTNERCOMPANY sy-vline 
WA_ICUSTCNTCTOP_STR-BUSINESSPARTNERPERSON sy-vline 
WA_ICUSTCNTCTOP_STR-PARTNERUUID sy-vline 
WA_ICUSTCNTCTOP_STR-CONTACTPERSONFUNCTION sy-vline 
WA_ICUSTCNTCTOP_STR-CONTACTPERSONDEPARTMENT sy-vline 
WA_ICUSTCNTCTOP_STR-FIRSTNAME sy-vline 
WA_ICUSTCNTCTOP_STR-LASTNAME sy-vline 
WA_ICUSTCNTCTOP_STR-FULLNAME sy-vline 
WA_ICUSTCNTCTOP_STR-CONTACTPERSONFUNCTIONNAME sy-vline 
WA_ICUSTCNTCTOP_STR-CONTACTPERSONDEPARTMENTNAME sy-vline 
WA_ICUSTCNTCTOP_STR-PHONENUMBER sy-vline 
WA_ICUSTCNTCTOP_STR-EMAILADDRESS sy-vline 
WA_ICUSTCNTCTOP_STR-MOBILEPHONENUMBER sy-vline      INTO ld_text SEPARATED BY SPACE.

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