ABAP Select data from SAP table ACUSTCOMPANY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ACUSTCOMPANY
*  INTO TABLE @DATA(IT_ACUSTCOMPANY2).
*--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_ACUSTCOMPANY INDEX 1 INTO DATA(WA_ACUSTCOMPANY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ACUSTCOMPANY>-MANDT = 1.
<ACUSTCOMPANY>-CUSTOMER = 1.
<ACUSTCOMPANY>-COMPANYCODE = 1.
<ACUSTCOMPANY>-APARTOLERANCEGROUP = 1.
<ACUSTCOMPANY>-ACCOUNTBYCUSTOMER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ACUSTCOMPANY-ACCOUNTINGCLERK, sy-vline,
  WA_ACUSTCOMPANY-ACCOUNTINGCLERKFAXNUMBER, sy-vline,
  WA_ACUSTCOMPANY-ACCOUNTINGCLERKINTERNETADDRESS, sy-vline,
  WA_ACUSTCOMPANY-ACCOUNTINGCLERKPHONENUMBER, sy-vline,
  WA_ACUSTCOMPANY-ALTERNATIVEPAYERACCOUNT, sy-vline,
  WA_ACUSTCOMPANY-AUTHORIZATIONGROUP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ACUSTCOMPANY 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_ACUSTCOMPANY 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_ACUSTCOMPANY INTO WA_ACUSTCOMPANY.


*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_ACUSTCOMPANY-CUSTOMER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ACUSTCOMPANY-CUSTOMER.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ALPHA, internal->external for field CASHPLANNINGGROUP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ACUSTCOMPANY-CASHPLANNINGGROUP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ACUSTCOMPANY-CASHPLANNINGGROUP.
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_ACUSTCOMPANY_STR, 
MANDT TYPE STRING,
CUSTOMER TYPE STRING,
COMPANYCODE TYPE STRING,
APARTOLERANCEGROUP TYPE STRING,
ACCOUNTBYCUSTOMER TYPE STRING,
ACCOUNTINGCLERK TYPE STRING,
ACCOUNTINGCLERKFAXNUMBER TYPE STRING,
ACCOUNTINGCLERKINTERNETADDRESS TYPE STRING,
ACCOUNTINGCLERKPHONENUMBER TYPE STRING,
ALTERNATIVEPAYERACCOUNT TYPE STRING,
AUTHORIZATIONGROUP TYPE STRING,
COLLECTIVEINVOICEVARIANT TYPE STRING,
CUSTOMERACCOUNTNOTE TYPE STRING,
CUSTOMERHEADOFFICE TYPE STRING,
CUSTOMERSUPPLIERCLEARINGISUSED TYPE STRING,
HOUSEBANK TYPE STRING,
INTERESTCALCULATIONCODE TYPE STRING,
INTERESTCALCULATIONDATE TYPE STRING,
INTRSTCALCFREQUENCYINMONTHS TYPE STRING,
ISTOBELOCALLYPROCESSED TYPE STRING,
ITEMISTOBEPAIDSEPARATELY TYPE STRING,
LAYOUTSORTINGRULE TYPE STRING,
PAYMENTBLOCKINGREASON TYPE STRING,
PAYMENTMETHODSLIST TYPE STRING,
PAYMENTTERMS TYPE STRING,
PAYTADVICEISSENTBYEDI TYPE STRING,
PHYSICALINVENTORYBLOCKIND TYPE STRING,
RECONCILIATIONACCOUNT TYPE STRING,
RECORDPAYMENTHISTORYINDICATOR TYPE STRING,
USERATCUSTOMER TYPE STRING,
DELETIONINDICATOR TYPE STRING,
CASHPLANNINGGROUP TYPE STRING,
KNOWNORNEGOTIATEDLEAVE TYPE STRING,
VALUEADJUSTMENTKEY TYPE STRING,
CUSTOMERACCOUNTGROUP TYPE STRING,
ISBUSINESSPURPOSECOMPLETED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ACUSTCOMPANY_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_ACUSTCOMPANY_STR-MANDT sy-vline 
WA_ACUSTCOMPANY_STR-CUSTOMER sy-vline 
WA_ACUSTCOMPANY_STR-COMPANYCODE sy-vline 
WA_ACUSTCOMPANY_STR-APARTOLERANCEGROUP sy-vline 
WA_ACUSTCOMPANY_STR-ACCOUNTBYCUSTOMER sy-vline 
WA_ACUSTCOMPANY_STR-ACCOUNTINGCLERK sy-vline 
WA_ACUSTCOMPANY_STR-ACCOUNTINGCLERKFAXNUMBER sy-vline 
WA_ACUSTCOMPANY_STR-ACCOUNTINGCLERKINTERNETADDRESS sy-vline 
WA_ACUSTCOMPANY_STR-ACCOUNTINGCLERKPHONENUMBER sy-vline 
WA_ACUSTCOMPANY_STR-ALTERNATIVEPAYERACCOUNT sy-vline 
WA_ACUSTCOMPANY_STR-AUTHORIZATIONGROUP sy-vline 
WA_ACUSTCOMPANY_STR-COLLECTIVEINVOICEVARIANT sy-vline 
WA_ACUSTCOMPANY_STR-CUSTOMERACCOUNTNOTE sy-vline 
WA_ACUSTCOMPANY_STR-CUSTOMERHEADOFFICE sy-vline 
WA_ACUSTCOMPANY_STR-CUSTOMERSUPPLIERCLEARINGISUSED sy-vline 
WA_ACUSTCOMPANY_STR-HOUSEBANK sy-vline 
WA_ACUSTCOMPANY_STR-INTERESTCALCULATIONCODE sy-vline 
WA_ACUSTCOMPANY_STR-INTERESTCALCULATIONDATE sy-vline 
WA_ACUSTCOMPANY_STR-INTRSTCALCFREQUENCYINMONTHS sy-vline 
WA_ACUSTCOMPANY_STR-ISTOBELOCALLYPROCESSED sy-vline 
WA_ACUSTCOMPANY_STR-ITEMISTOBEPAIDSEPARATELY sy-vline 
WA_ACUSTCOMPANY_STR-LAYOUTSORTINGRULE sy-vline 
WA_ACUSTCOMPANY_STR-PAYMENTBLOCKINGREASON sy-vline 
WA_ACUSTCOMPANY_STR-PAYMENTMETHODSLIST sy-vline 
WA_ACUSTCOMPANY_STR-PAYMENTTERMS sy-vline 
WA_ACUSTCOMPANY_STR-PAYTADVICEISSENTBYEDI sy-vline 
WA_ACUSTCOMPANY_STR-PHYSICALINVENTORYBLOCKIND sy-vline 
WA_ACUSTCOMPANY_STR-RECONCILIATIONACCOUNT sy-vline 
WA_ACUSTCOMPANY_STR-RECORDPAYMENTHISTORYINDICATOR sy-vline 
WA_ACUSTCOMPANY_STR-USERATCUSTOMER sy-vline 
WA_ACUSTCOMPANY_STR-DELETIONINDICATOR sy-vline 
WA_ACUSTCOMPANY_STR-CASHPLANNINGGROUP sy-vline 
WA_ACUSTCOMPANY_STR-KNOWNORNEGOTIATEDLEAVE sy-vline 
WA_ACUSTCOMPANY_STR-VALUEADJUSTMENTKEY sy-vline 
WA_ACUSTCOMPANY_STR-CUSTOMERACCOUNTGROUP sy-vline 
WA_ACUSTCOMPANY_STR-ISBUSINESSPURPOSECOMPLETED sy-vline      INTO ld_text SEPARATED BY SPACE.

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