ABAP Select data from SAP table ASRVCTR into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ASRVCTR 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 ASRVCTR. 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 ASRVCTR 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_ASRVCTR TYPE STANDARD TABLE OF ASRVCTR,
      WA_ASRVCTR TYPE ASRVCTR,
      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: <ASRVCTR> TYPE ASRVCTR.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ASRVCTR
*  INTO TABLE @DATA(IT_ASRVCTR2).
*--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_ASRVCTR INDEX 1 INTO DATA(WA_ASRVCTR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ASRVCTR>-MANDT = 1.
<ASRVCTR>-SERVICECONTRACT = 1.
<ASRVCTR>-SERVICECONTRACTTYPE = 1.
<ASRVCTR>-SERVICECONTRACTDESCRIPTION = 1.
<ASRVCTR>-LANGUAGE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ASRVCTR-SERVICECONTRACTSTARTDATETIME, sy-vline,
  WA_ASRVCTR-SERVICECONTRACTENDDATETIME, sy-vline,
  WA_ASRVCTR-PURCHASEORDERBYCUSTOMER, sy-vline,
  WA_ASRVCTR-CUSTOMERPURCHASEORDERDATE, sy-vline,
  WA_ASRVCTR-SERVICECONTRACTISRELEASED, sy-vline,
  WA_ASRVCTR-SERVICECONTRACTISCOMPLETED, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ASRVCTR 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_ASRVCTR 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_ASRVCTR INTO WA_ASRVCTR.


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

*Conversion exit ISOLA, internal->external for field LANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_ASRVCTR-LANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ASRVCTR-LANGUAGE.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field PERSONRESPONSIBLE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ASRVCTR-PERSONRESPONSIBLE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ASRVCTR-PERSONRESPONSIBLE.
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_ASRVCTR_STR, 
MANDT TYPE STRING,
SERVICECONTRACT TYPE STRING,
SERVICECONTRACTTYPE TYPE STRING,
SERVICECONTRACTDESCRIPTION TYPE STRING,
LANGUAGE TYPE STRING,
SERVICECONTRACTSTARTDATETIME TYPE STRING,
SERVICECONTRACTENDDATETIME TYPE STRING,
PURCHASEORDERBYCUSTOMER TYPE STRING,
CUSTOMERPURCHASEORDERDATE TYPE STRING,
SERVICECONTRACTISRELEASED TYPE STRING,
SERVICECONTRACTISCOMPLETED TYPE STRING,
SALESORGANIZATION TYPE STRING,
DISTRIBUTIONCHANNEL TYPE STRING,
DIVISION TYPE STRING,
SALESOFFICE TYPE STRING,
SALESGROUP TYPE STRING,
SOLDTOPARTY TYPE STRING,
SHIPTOPARTY TYPE STRING,
BILLTOPARTY TYPE STRING,
PAYERPARTY TYPE STRING,
CONTACTPERSON TYPE STRING,
PERSONRESPONSIBLE TYPE STRING,
SERVICECONTRACTCANCLNPARTY TYPE STRING,
SERVICECONTRCANCELLATIONREASON TYPE STRING,
SRVCCONTRCANCELLATIONDATETIME TYPE STRING,
REFERENCESERVICECONTRACT TYPE STRING,
REFERENCESERVICEQTAN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ASRVCTR_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_ASRVCTR_STR-MANDT sy-vline 
WA_ASRVCTR_STR-SERVICECONTRACT sy-vline 
WA_ASRVCTR_STR-SERVICECONTRACTTYPE sy-vline 
WA_ASRVCTR_STR-SERVICECONTRACTDESCRIPTION sy-vline 
WA_ASRVCTR_STR-LANGUAGE sy-vline 
WA_ASRVCTR_STR-SERVICECONTRACTSTARTDATETIME sy-vline 
WA_ASRVCTR_STR-SERVICECONTRACTENDDATETIME sy-vline 
WA_ASRVCTR_STR-PURCHASEORDERBYCUSTOMER sy-vline 
WA_ASRVCTR_STR-CUSTOMERPURCHASEORDERDATE sy-vline 
WA_ASRVCTR_STR-SERVICECONTRACTISRELEASED sy-vline 
WA_ASRVCTR_STR-SERVICECONTRACTISCOMPLETED sy-vline 
WA_ASRVCTR_STR-SALESORGANIZATION sy-vline 
WA_ASRVCTR_STR-DISTRIBUTIONCHANNEL sy-vline 
WA_ASRVCTR_STR-DIVISION sy-vline 
WA_ASRVCTR_STR-SALESOFFICE sy-vline 
WA_ASRVCTR_STR-SALESGROUP sy-vline 
WA_ASRVCTR_STR-SOLDTOPARTY sy-vline 
WA_ASRVCTR_STR-SHIPTOPARTY sy-vline 
WA_ASRVCTR_STR-BILLTOPARTY sy-vline 
WA_ASRVCTR_STR-PAYERPARTY sy-vline 
WA_ASRVCTR_STR-CONTACTPERSON sy-vline 
WA_ASRVCTR_STR-PERSONRESPONSIBLE sy-vline 
WA_ASRVCTR_STR-SERVICECONTRACTCANCLNPARTY sy-vline 
WA_ASRVCTR_STR-SERVICECONTRCANCELLATIONREASON sy-vline 
WA_ASRVCTR_STR-SRVCCONTRCANCELLATIONDATETIME sy-vline 
WA_ASRVCTR_STR-REFERENCESERVICECONTRACT sy-vline 
WA_ASRVCTR_STR-REFERENCESERVICEQTAN sy-vline      INTO ld_text SEPARATED BY SPACE.

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