ABAP Select data from SAP table ISRVCENTRSHTBSC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISRVCENTRSHTBSC
*  INTO TABLE @DATA(IT_ISRVCENTRSHTBSC2).
*--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_ISRVCENTRSHTBSC INDEX 1 INTO DATA(WA_ISRVCENTRSHTBSC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISRVCENTRSHTBSC>-MANDT = 1.
<ISRVCENTRSHTBSC>-SERVICEENTRYSHEET = 1.
<ISRVCENTRSHTBSC>-SERVICEENTRYSHEETUUID = 1.
<ISRVCENTRSHTBSC>-SERVICEENTRYSHEETNAME = 1.
<ISRVCENTRSHTBSC>-SUPPLIER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISRVCENTRSHTBSC-PURCHASEORDER, sy-vline,
  WA_ISRVCENTRSHTBSC-ISDELETED, sy-vline,
  WA_ISRVCENTRSHTBSC-APPROVALSTATUS, sy-vline,
  WA_ISRVCENTRSHTBSC-APPROVALDATETIME, sy-vline,
  WA_ISRVCENTRSHTBSC-RESPONSIBLEPERSON, sy-vline,
  WA_ISRVCENTRSHTBSC-ORIGINOBJECTTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISRVCENTRSHTBSC 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_ISRVCENTRSHTBSC 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_ISRVCENTRSHTBSC INTO WA_ISRVCENTRSHTBSC.


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

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

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

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

*Conversion exit GJAHR, internal->external for field MATERIALDOCUMENTYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_ISRVCENTRSHTBSC-MATERIALDOCUMENTYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISRVCENTRSHTBSC-MATERIALDOCUMENTYEAR.
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_ISRVCENTRSHTBSC_STR, 
MANDT TYPE STRING,
SERVICEENTRYSHEET TYPE STRING,
SERVICEENTRYSHEETUUID TYPE STRING,
SERVICEENTRYSHEETNAME TYPE STRING,
SUPPLIER TYPE STRING,
PURCHASEORDER TYPE STRING,
ISDELETED TYPE STRING,
APPROVALSTATUS TYPE STRING,
APPROVALDATETIME TYPE STRING,
RESPONSIBLEPERSON TYPE STRING,
ORIGINOBJECTTYPE TYPE STRING,
CURRENCY TYPE STRING,
MATERIALDOCUMENT TYPE STRING,
MATERIALDOCUMENTYEAR TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
PURCHASINGGROUP TYPE STRING,
CREATIONDATETIME TYPE STRING,
CREATEDBYUSER TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
LASTCHANGEUSER TYPE STRING,
ISENDOFPURPOSEBLOCKED TYPE STRING,
PURGDOCEXTERNALSYSTEM TYPE STRING,
PURGDOCEXTERNALREFERENCE TYPE STRING,
EXTERNALREVISIONDATETIME TYPE STRING,
POSTINGDATE TYPE STRING,
PRICINGDOCUMENT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISRVCENTRSHTBSC_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_ISRVCENTRSHTBSC_STR-MANDT sy-vline 
WA_ISRVCENTRSHTBSC_STR-SERVICEENTRYSHEET sy-vline 
WA_ISRVCENTRSHTBSC_STR-SERVICEENTRYSHEETUUID sy-vline 
WA_ISRVCENTRSHTBSC_STR-SERVICEENTRYSHEETNAME sy-vline 
WA_ISRVCENTRSHTBSC_STR-SUPPLIER sy-vline 
WA_ISRVCENTRSHTBSC_STR-PURCHASEORDER sy-vline 
WA_ISRVCENTRSHTBSC_STR-ISDELETED sy-vline 
WA_ISRVCENTRSHTBSC_STR-APPROVALSTATUS sy-vline 
WA_ISRVCENTRSHTBSC_STR-APPROVALDATETIME sy-vline 
WA_ISRVCENTRSHTBSC_STR-RESPONSIBLEPERSON sy-vline 
WA_ISRVCENTRSHTBSC_STR-ORIGINOBJECTTYPE sy-vline 
WA_ISRVCENTRSHTBSC_STR-CURRENCY sy-vline 
WA_ISRVCENTRSHTBSC_STR-MATERIALDOCUMENT sy-vline 
WA_ISRVCENTRSHTBSC_STR-MATERIALDOCUMENTYEAR sy-vline 
WA_ISRVCENTRSHTBSC_STR-PURCHASINGORGANIZATION sy-vline 
WA_ISRVCENTRSHTBSC_STR-PURCHASINGGROUP sy-vline 
WA_ISRVCENTRSHTBSC_STR-CREATIONDATETIME sy-vline 
WA_ISRVCENTRSHTBSC_STR-CREATEDBYUSER sy-vline 
WA_ISRVCENTRSHTBSC_STR-LASTCHANGEDATETIME sy-vline 
WA_ISRVCENTRSHTBSC_STR-LASTCHANGEUSER sy-vline 
WA_ISRVCENTRSHTBSC_STR-ISENDOFPURPOSEBLOCKED sy-vline 
WA_ISRVCENTRSHTBSC_STR-PURGDOCEXTERNALSYSTEM sy-vline 
WA_ISRVCENTRSHTBSC_STR-PURGDOCEXTERNALREFERENCE sy-vline 
WA_ISRVCENTRSHTBSC_STR-EXTERNALREVISIONDATETIME sy-vline 
WA_ISRVCENTRSHTBSC_STR-POSTINGDATE sy-vline 
WA_ISRVCENTRSHTBSC_STR-PRICINGDOCUMENT sy-vline      INTO ld_text SEPARATED BY SPACE.

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