ABAP Select data from SAP table EPIC_V_CUSTOMER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EPIC_V_CUSTOMER
*  INTO TABLE @DATA(IT_EPIC_V_CUSTOMER2).
*--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_EPIC_V_CUSTOMER INDEX 1 INTO DATA(WA_EPIC_V_CUSTOMER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EPIC_V_CUSTOMER>-MANDT = 1.
<EPIC_V_CUSTOMER>-BUKRS = 1.
<EPIC_V_CUSTOMER>-KUNNR = 1.
<EPIC_V_CUSTOMER>-UMSKS = 1.
<EPIC_V_CUSTOMER>-UMSKZ = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EPIC_V_CUSTOMER-AUGDT, sy-vline,
  WA_EPIC_V_CUSTOMER-AUGBL, sy-vline,
  WA_EPIC_V_CUSTOMER-ZUONR, sy-vline,
  WA_EPIC_V_CUSTOMER-GJAHR, sy-vline,
  WA_EPIC_V_CUSTOMER-BELNR, sy-vline,
  WA_EPIC_V_CUSTOMER-BUZEI, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EPIC_V_CUSTOMER 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_EPIC_V_CUSTOMER 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_EPIC_V_CUSTOMER INTO WA_EPIC_V_CUSTOMER.


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

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

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

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

*Conversion exit AU132, internal->external for field WRBTR
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_EPIC_V_CUSTOMER-WRBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EPIC_V_CUSTOMER-WRBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field SKNTO
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_EPIC_V_CUSTOMER-SKNTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EPIC_V_CUSTOMER-SKNTO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field WSKTO
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_EPIC_V_CUSTOMER-WSKTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EPIC_V_CUSTOMER-WSKTO.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit GJAHR, internal->external for field REBZJ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_EPIC_V_CUSTOMER-REBZJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EPIC_V_CUSTOMER-REBZJ.
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_EPIC_V_CUSTOMER_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
KUNNR TYPE STRING,
UMSKS TYPE STRING,
UMSKZ TYPE STRING,
AUGDT TYPE STRING,
AUGBL TYPE STRING,
ZUONR TYPE STRING,
GJAHR TYPE STRING,
BELNR TYPE STRING,
BUZEI TYPE STRING,
WAERS TYPE STRING,
SHKZG TYPE STRING,
GSBER TYPE STRING,
WRBTR TYPE STRING,
SKNTO TYPE STRING,
WSKTO TYPE STRING,
ZLSCH TYPE STRING,
ZLSPR TYPE STRING,
HBKID TYPE STRING,
REBZG TYPE STRING,
REBZJ TYPE STRING,
REBZZ TYPE STRING,
HKTID TYPE STRING,
GUID TYPE STRING,
LIST_ID TYPE STRING,
STATUS TYPE STRING,
EPIC_PROCESSOR TYPE STRING,
EPIC_STATUS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EPIC_V_CUSTOMER_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_EPIC_V_CUSTOMER_STR-MANDT sy-vline 
WA_EPIC_V_CUSTOMER_STR-BUKRS sy-vline 
WA_EPIC_V_CUSTOMER_STR-KUNNR sy-vline 
WA_EPIC_V_CUSTOMER_STR-UMSKS sy-vline 
WA_EPIC_V_CUSTOMER_STR-UMSKZ sy-vline 
WA_EPIC_V_CUSTOMER_STR-AUGDT sy-vline 
WA_EPIC_V_CUSTOMER_STR-AUGBL sy-vline 
WA_EPIC_V_CUSTOMER_STR-ZUONR sy-vline 
WA_EPIC_V_CUSTOMER_STR-GJAHR sy-vline 
WA_EPIC_V_CUSTOMER_STR-BELNR sy-vline 
WA_EPIC_V_CUSTOMER_STR-BUZEI sy-vline 
WA_EPIC_V_CUSTOMER_STR-WAERS sy-vline 
WA_EPIC_V_CUSTOMER_STR-SHKZG sy-vline 
WA_EPIC_V_CUSTOMER_STR-GSBER sy-vline 
WA_EPIC_V_CUSTOMER_STR-WRBTR sy-vline 
WA_EPIC_V_CUSTOMER_STR-SKNTO sy-vline 
WA_EPIC_V_CUSTOMER_STR-WSKTO sy-vline 
WA_EPIC_V_CUSTOMER_STR-ZLSCH sy-vline 
WA_EPIC_V_CUSTOMER_STR-ZLSPR sy-vline 
WA_EPIC_V_CUSTOMER_STR-HBKID sy-vline 
WA_EPIC_V_CUSTOMER_STR-REBZG sy-vline 
WA_EPIC_V_CUSTOMER_STR-REBZJ sy-vline 
WA_EPIC_V_CUSTOMER_STR-REBZZ sy-vline 
WA_EPIC_V_CUSTOMER_STR-HKTID sy-vline 
WA_EPIC_V_CUSTOMER_STR-GUID sy-vline 
WA_EPIC_V_CUSTOMER_STR-LIST_ID sy-vline 
WA_EPIC_V_CUSTOMER_STR-STATUS sy-vline 
WA_EPIC_V_CUSTOMER_STR-EPIC_PROCESSOR sy-vline 
WA_EPIC_V_CUSTOMER_STR-EPIC_STATUS sy-vline      INTO ld_text SEPARATED BY SPACE.

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