ABAP Select data from SAP table ISAFTSMCUST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISAFTSMCUST
*  INTO TABLE @DATA(IT_ISAFTSMCUST2).
*--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_ISAFTSMCUST INDEX 1 INTO DATA(WA_ISAFTSMCUST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISAFTSMCUST>-MANDT = 1.
<ISAFTSMCUST>-SETTLMTMGMTDOC = 1.
<ISAFTSMCUST>-CUSTOMER = 1.
<ISAFTSMCUST>-COMPANYCODE = 1.
<ISAFTSMCUST>-POSTINGDATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISAFTSMCUST-SUPPLYINGCOUNTRY, sy-vline,
  WA_ISAFTSMCUST-VATREGISTRATION, sy-vline,
  WA_ISAFTSMCUST-TAXNUMBER1, sy-vline,
  WA_ISAFTSMCUST-TAXNUMBER2, sy-vline,
  WA_ISAFTSMCUST-ORGANIZATIONBPNAME1, sy-vline,
  WA_ISAFTSMCUST-ORGANIZATIONBPNAME2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISAFTSMCUST 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_ISAFTSMCUST 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_ISAFTSMCUST INTO WA_ISAFTSMCUST.


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

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

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

*Conversion exit ALPHA, internal->external for field RECONCILIATIONACCOUNT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISAFTSMCUST-RECONCILIATIONACCOUNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISAFTSMCUST-RECONCILIATIONACCOUNT.
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_ISAFTSMCUST_STR, 
MANDT TYPE STRING,
SETTLMTMGMTDOC TYPE STRING,
CUSTOMER TYPE STRING,
COMPANYCODE TYPE STRING,
POSTINGDATE TYPE STRING,
SUPPLYINGCOUNTRY TYPE STRING,
VATREGISTRATION TYPE STRING,
TAXNUMBER1 TYPE STRING,
TAXNUMBER2 TYPE STRING,
ORGANIZATIONBPNAME1 TYPE STRING,
ORGANIZATIONBPNAME2 TYPE STRING,
CITYNAME TYPE STRING,
POSTALCODE TYPE STRING,
COUNTRY TYPE STRING,
STREETNAME TYPE STRING,
ADDRESSID TYPE STRING,
AUTHORIZATIONGROUP TYPE STRING,
RECONCILIATIONACCOUNT TYPE STRING,
PARTNERFIRSTNAME TYPE STRING,
PARTNERLASTNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISAFTSMCUST_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_ISAFTSMCUST_STR-MANDT sy-vline 
WA_ISAFTSMCUST_STR-SETTLMTMGMTDOC sy-vline 
WA_ISAFTSMCUST_STR-CUSTOMER sy-vline 
WA_ISAFTSMCUST_STR-COMPANYCODE sy-vline 
WA_ISAFTSMCUST_STR-POSTINGDATE sy-vline 
WA_ISAFTSMCUST_STR-SUPPLYINGCOUNTRY sy-vline 
WA_ISAFTSMCUST_STR-VATREGISTRATION sy-vline 
WA_ISAFTSMCUST_STR-TAXNUMBER1 sy-vline 
WA_ISAFTSMCUST_STR-TAXNUMBER2 sy-vline 
WA_ISAFTSMCUST_STR-ORGANIZATIONBPNAME1 sy-vline 
WA_ISAFTSMCUST_STR-ORGANIZATIONBPNAME2 sy-vline 
WA_ISAFTSMCUST_STR-CITYNAME sy-vline 
WA_ISAFTSMCUST_STR-POSTALCODE sy-vline 
WA_ISAFTSMCUST_STR-COUNTRY sy-vline 
WA_ISAFTSMCUST_STR-STREETNAME sy-vline 
WA_ISAFTSMCUST_STR-ADDRESSID sy-vline 
WA_ISAFTSMCUST_STR-AUTHORIZATIONGROUP sy-vline 
WA_ISAFTSMCUST_STR-RECONCILIATIONACCOUNT sy-vline 
WA_ISAFTSMCUST_STR-PARTNERFIRSTNAME sy-vline 
WA_ISAFTSMCUST_STR-PARTNERLASTNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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