ABAP Select data from SAP table PRSHSTAFFREQIND into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PRSHSTAFFREQIND
*  INTO TABLE @DATA(IT_PRSHSTAFFREQIND2).
*--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_PRSHSTAFFREQIND INDEX 1 INTO DATA(WA_PRSHSTAFFREQIND2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PRSHSTAFFREQIND>-MANDT = 1.
<PRSHSTAFFREQIND>-RESOURCEDEMANDUUID = 1.
<PRSHSTAFFREQIND>-ENGAGEMENTPROJECTRESOURCE = 1.
<PRSHSTAFFREQIND>-ENGAGEMENTPROJECTUUID = 1.
<PRSHSTAFFREQIND>-WORKPACKAGEUUID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PRSHSTAFFREQIND-WORKITEM, sy-vline,
  WA_PRSHSTAFFREQIND-SERVICEORGANIZATION, sy-vline,
  WA_PRSHSTAFFREQIND-ENGAGEMENTPROJECT, sy-vline,
  WA_PRSHSTAFFREQIND-ENGAGEMENTPROJECTNAME, sy-vline,
  WA_PRSHSTAFFREQIND-ENGAGEMENTPROJECTCATEGORY, sy-vline,
  WA_PRSHSTAFFREQIND-EMPLOYEEREQUESTDELIVORG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PRSHSTAFFREQIND 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_PRSHSTAFFREQIND 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_PRSHSTAFFREQIND INTO WA_PRSHSTAFFREQIND.


*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 CUNIT, internal->external for field UNITOFMEASURE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PRSHSTAFFREQIND-UNITOFMEASURE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PRSHSTAFFREQIND-UNITOFMEASURE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CUSTOMER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PRSHSTAFFREQIND-CUSTOMER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PRSHSTAFFREQIND-CUSTOMER.
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_PRSHSTAFFREQIND_STR, 
MANDT TYPE STRING,
RESOURCEDEMANDUUID TYPE STRING,
ENGAGEMENTPROJECTRESOURCE TYPE STRING,
ENGAGEMENTPROJECTUUID TYPE STRING,
WORKPACKAGEUUID TYPE STRING,
WORKITEM TYPE STRING,
SERVICEORGANIZATION TYPE STRING,
ENGAGEMENTPROJECT TYPE STRING,
ENGAGEMENTPROJECTNAME TYPE STRING,
ENGAGEMENTPROJECTCATEGORY TYPE STRING,
EMPLOYEEREQUESTDELIVORG TYPE STRING,
PROJECTVISIBILITY TYPE STRING,
ENGAGEMENTPROJECTSTAGE TYPE STRING,
EMPLOYMENTINTERNALID TYPE STRING,
UNITOFMEASURE TYPE STRING,
EMPLOYEEREQUESTDURATION TYPE STRING,
STARTDATE TYPE STRING,
ENDDATE TYPE STRING,
CURRENCY TYPE STRING,
PLNDREVAMT TYPE STRING,
PROJECTMANAGER TYPE STRING,
WORKPACKAGE TYPE STRING,
WORKPACKAGENAME TYPE STRING,
BILLINGCONTROLCATEGORY TYPE STRING,
CUSTOMER TYPE STRING,
INDUSTRY TYPE STRING,
EMPLOYEEREQUESTAUTHORIZED TYPE STRING,
EMPLOYEEREQUESTHDRSRVORG TYPE STRING,
EMPLOYEEREQUESTHDRCOSTCENTER TYPE STRING,
CONTROLLINGAREA TYPE STRING,
ENGAGEMENTPROJECTRESOURCETYPE TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PRSHSTAFFREQIND_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_PRSHSTAFFREQIND_STR-MANDT sy-vline 
WA_PRSHSTAFFREQIND_STR-RESOURCEDEMANDUUID sy-vline 
WA_PRSHSTAFFREQIND_STR-ENGAGEMENTPROJECTRESOURCE sy-vline 
WA_PRSHSTAFFREQIND_STR-ENGAGEMENTPROJECTUUID sy-vline 
WA_PRSHSTAFFREQIND_STR-WORKPACKAGEUUID sy-vline 
WA_PRSHSTAFFREQIND_STR-WORKITEM sy-vline 
WA_PRSHSTAFFREQIND_STR-SERVICEORGANIZATION sy-vline 
WA_PRSHSTAFFREQIND_STR-ENGAGEMENTPROJECT sy-vline 
WA_PRSHSTAFFREQIND_STR-ENGAGEMENTPROJECTNAME sy-vline 
WA_PRSHSTAFFREQIND_STR-ENGAGEMENTPROJECTCATEGORY sy-vline 
WA_PRSHSTAFFREQIND_STR-EMPLOYEEREQUESTDELIVORG sy-vline 
WA_PRSHSTAFFREQIND_STR-PROJECTVISIBILITY sy-vline 
WA_PRSHSTAFFREQIND_STR-ENGAGEMENTPROJECTSTAGE sy-vline 
WA_PRSHSTAFFREQIND_STR-EMPLOYMENTINTERNALID sy-vline 
WA_PRSHSTAFFREQIND_STR-UNITOFMEASURE sy-vline 
WA_PRSHSTAFFREQIND_STR-EMPLOYEEREQUESTDURATION sy-vline 
WA_PRSHSTAFFREQIND_STR-STARTDATE sy-vline 
WA_PRSHSTAFFREQIND_STR-ENDDATE sy-vline 
WA_PRSHSTAFFREQIND_STR-CURRENCY sy-vline 
WA_PRSHSTAFFREQIND_STR-PLNDREVAMT sy-vline 
WA_PRSHSTAFFREQIND_STR-PROJECTMANAGER sy-vline 
WA_PRSHSTAFFREQIND_STR-WORKPACKAGE sy-vline 
WA_PRSHSTAFFREQIND_STR-WORKPACKAGENAME sy-vline 
WA_PRSHSTAFFREQIND_STR-BILLINGCONTROLCATEGORY sy-vline 
WA_PRSHSTAFFREQIND_STR-CUSTOMER sy-vline 
WA_PRSHSTAFFREQIND_STR-INDUSTRY sy-vline 
WA_PRSHSTAFFREQIND_STR-EMPLOYEEREQUESTAUTHORIZED sy-vline 
WA_PRSHSTAFFREQIND_STR-EMPLOYEEREQUESTHDRSRVORG sy-vline 
WA_PRSHSTAFFREQIND_STR-EMPLOYEEREQUESTHDRCOSTCENTER sy-vline 
WA_PRSHSTAFFREQIND_STR-CONTROLLINGAREA sy-vline 
WA_PRSHSTAFFREQIND_STR-ENGAGEMENTPROJECTRESOURCETYPE sy-vline 
WA_PRSHSTAFFREQIND_STR-LASTCHANGEDATETIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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