ABAP Select data from SAP table CRSHREQRES into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CRSHREQRES
*  INTO TABLE @DATA(IT_CRSHREQRES2).
*--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_CRSHREQRES INDEX 1 INTO DATA(WA_CRSHREQRES2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CRSHREQRES>-MANDT = 1.
<CRSHREQRES>-PROJASSIGNMENTUUID = 1.
<CRSHREQRES>-RESOURCEDEMANDUUID = 1.
<CRSHREQRES>-EMPLOYMENTINTERNALID = 1.
<CRSHREQRES>-SERVICEORGANIZATION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CRSHREQRES-PROJECTVISIBILITY, sy-vline,
  WA_CRSHREQRES-EMPLOYEEIMAGEURL, sy-vline,
  WA_CRSHREQRES-COMPANYCODE, sy-vline,
  WA_CRSHREQRES-COMPANYCODENAME, sy-vline,
  WA_CRSHREQRES-COSTCENTER, sy-vline,
  WA_CRSHREQRES-COSTCENTERNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CRSHREQRES 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_CRSHREQRES 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_CRSHREQRES INTO WA_CRSHREQRES.


*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 COSTCENTER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CRSHREQRES-COSTCENTER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRSHREQRES-COSTCENTER.
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_CRSHREQRES_STR, 
MANDT TYPE STRING,
PROJASSIGNMENTUUID TYPE STRING,
RESOURCEDEMANDUUID TYPE STRING,
EMPLOYMENTINTERNALID TYPE STRING,
SERVICEORGANIZATION TYPE STRING,
PROJECTVISIBILITY TYPE STRING,
EMPLOYEEIMAGEURL TYPE STRING,
COMPANYCODE TYPE STRING,
COMPANYCODENAME TYPE STRING,
COSTCENTER TYPE STRING,
COSTCENTERNAME TYPE STRING,
PERSONEXTERNALID TYPE STRING,
FULLNAME TYPE STRING,
JOBNAME TYPE STRING,
AUTHORIZATIONGROUP TYPE STRING,
ISBUSINESSPURPOSECOMPLETED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CRSHREQRES_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_CRSHREQRES_STR-MANDT sy-vline 
WA_CRSHREQRES_STR-PROJASSIGNMENTUUID sy-vline 
WA_CRSHREQRES_STR-RESOURCEDEMANDUUID sy-vline 
WA_CRSHREQRES_STR-EMPLOYMENTINTERNALID sy-vline 
WA_CRSHREQRES_STR-SERVICEORGANIZATION sy-vline 
WA_CRSHREQRES_STR-PROJECTVISIBILITY sy-vline 
WA_CRSHREQRES_STR-EMPLOYEEIMAGEURL sy-vline 
WA_CRSHREQRES_STR-COMPANYCODE sy-vline 
WA_CRSHREQRES_STR-COMPANYCODENAME sy-vline 
WA_CRSHREQRES_STR-COSTCENTER sy-vline 
WA_CRSHREQRES_STR-COSTCENTERNAME sy-vline 
WA_CRSHREQRES_STR-PERSONEXTERNALID sy-vline 
WA_CRSHREQRES_STR-FULLNAME sy-vline 
WA_CRSHREQRES_STR-JOBNAME sy-vline 
WA_CRSHREQRES_STR-AUTHORIZATIONGROUP sy-vline 
WA_CRSHREQRES_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.