ABAP Select data from SAP table ASRVREQ 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 ASRVREQ 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 ASRVREQ. 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 ASRVREQ 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_ASRVREQ TYPE STANDARD TABLE OF ASRVREQ,
      WA_ASRVREQ TYPE ASRVREQ,
      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: <ASRVREQ> TYPE ASRVREQ.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ASRVREQ
*  INTO TABLE @DATA(IT_ASRVREQ2).
*--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_ASRVREQ INDEX 1 INTO DATA(WA_ASRVREQ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ASRVREQ>-MANDT = 1.
<ASRVREQ>-SERVICEREQUEST = 1.
<ASRVREQ>-SERVICEREQUESTTYPE = 1.
<ASRVREQ>-SERVICEREQUESTUUID = 1.
<ASRVREQ>-SERVICEREQUESTDESCRIPTION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ASRVREQ-LANGUAGE, sy-vline,
  WA_ASRVREQ-SERVICEDOCUMENTPRIORITY, sy-vline,
  WA_ASRVREQ-SERVICEDOCUMENTCATEGORY, sy-vline,
  WA_ASRVREQ-REQUESTEDSERVICESTARTDATETIME, sy-vline,
  WA_ASRVREQ-REQUESTEDSERVICEENDDATETIME, sy-vline,
  WA_ASRVREQ-SERVICEFIRSTRESPONSEBYDATETIME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ASRVREQ 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_ASRVREQ 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_ASRVREQ INTO WA_ASRVREQ.


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

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

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

*Conversion exit ALPHA, internal->external for field SERVICEREQUESTREPORTER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ASRVREQ-SERVICEREQUESTREPORTER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ASRVREQ-SERVICEREQUESTREPORTER.
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_ASRVREQ_STR, 
MANDT TYPE STRING,
SERVICEREQUEST TYPE STRING,
SERVICEREQUESTTYPE TYPE STRING,
SERVICEREQUESTUUID TYPE STRING,
SERVICEREQUESTDESCRIPTION TYPE STRING,
LANGUAGE TYPE STRING,
SERVICEDOCUMENTPRIORITY TYPE STRING,
SERVICEDOCUMENTCATEGORY TYPE STRING,
REQUESTEDSERVICESTARTDATETIME TYPE STRING,
REQUESTEDSERVICEENDDATETIME TYPE STRING,
SERVICEFIRSTRESPONSEBYDATETIME TYPE STRING,
SERVICEDUEBYDATETIME TYPE STRING,
PURCHASEORDERBYCUSTOMER TYPE STRING,
CUSTOMERPURCHASEORDERDATE TYPE STRING,
RECOMMENDEDSERVICEPRIORITY TYPE STRING,
SERVICEREQUESTURGENCY TYPE STRING,
SERVICEREQUESTIMPACT TYPE STRING,
SERVICEREQUESTPROBLEMCATEGORY TYPE STRING,
SERVICEREQUESTISCANCELED TYPE STRING,
SERVICEREQUESTISCOMPLETED TYPE STRING,
SALESORGANIZATION TYPE STRING,
DISTRIBUTIONCHANNEL TYPE STRING,
DIVISION TYPE STRING,
SALESOFFICE TYPE STRING,
SALESGROUP TYPE STRING,
SOLDTOPARTY TYPE STRING,
SERVICEREQUESTREPORTER TYPE STRING,
RESPONSEPROFILE TYPE STRING,
SERVICEPROFILE TYPE STRING,
SALESORGANIZATIONORGUNITID TYPE STRING,
SERVICEORGANIZATION TYPE STRING,
SALESOFFICEORGUNITID TYPE STRING,
SALESGROUPORGUNITID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ASRVREQ_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_ASRVREQ_STR-MANDT sy-vline 
WA_ASRVREQ_STR-SERVICEREQUEST sy-vline 
WA_ASRVREQ_STR-SERVICEREQUESTTYPE sy-vline 
WA_ASRVREQ_STR-SERVICEREQUESTUUID sy-vline 
WA_ASRVREQ_STR-SERVICEREQUESTDESCRIPTION sy-vline 
WA_ASRVREQ_STR-LANGUAGE sy-vline 
WA_ASRVREQ_STR-SERVICEDOCUMENTPRIORITY sy-vline 
WA_ASRVREQ_STR-SERVICEDOCUMENTCATEGORY sy-vline 
WA_ASRVREQ_STR-REQUESTEDSERVICESTARTDATETIME sy-vline 
WA_ASRVREQ_STR-REQUESTEDSERVICEENDDATETIME sy-vline 
WA_ASRVREQ_STR-SERVICEFIRSTRESPONSEBYDATETIME sy-vline 
WA_ASRVREQ_STR-SERVICEDUEBYDATETIME sy-vline 
WA_ASRVREQ_STR-PURCHASEORDERBYCUSTOMER sy-vline 
WA_ASRVREQ_STR-CUSTOMERPURCHASEORDERDATE sy-vline 
WA_ASRVREQ_STR-RECOMMENDEDSERVICEPRIORITY sy-vline 
WA_ASRVREQ_STR-SERVICEREQUESTURGENCY sy-vline 
WA_ASRVREQ_STR-SERVICEREQUESTIMPACT sy-vline 
WA_ASRVREQ_STR-SERVICEREQUESTPROBLEMCATEGORY sy-vline 
WA_ASRVREQ_STR-SERVICEREQUESTISCANCELED sy-vline 
WA_ASRVREQ_STR-SERVICEREQUESTISCOMPLETED sy-vline 
WA_ASRVREQ_STR-SALESORGANIZATION sy-vline 
WA_ASRVREQ_STR-DISTRIBUTIONCHANNEL sy-vline 
WA_ASRVREQ_STR-DIVISION sy-vline 
WA_ASRVREQ_STR-SALESOFFICE sy-vline 
WA_ASRVREQ_STR-SALESGROUP sy-vline 
WA_ASRVREQ_STR-SOLDTOPARTY sy-vline 
WA_ASRVREQ_STR-SERVICEREQUESTREPORTER sy-vline 
WA_ASRVREQ_STR-RESPONSEPROFILE sy-vline 
WA_ASRVREQ_STR-SERVICEPROFILE sy-vline 
WA_ASRVREQ_STR-SALESORGANIZATIONORGUNITID sy-vline 
WA_ASRVREQ_STR-SERVICEORGANIZATION sy-vline 
WA_ASRVREQ_STR-SALESOFFICEORGUNITID sy-vline 
WA_ASRVREQ_STR-SALESGROUPORGUNITID sy-vline      INTO ld_text SEPARATED BY SPACE.

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