ABAP Select data from SAP table PSSERVICEITEM_S into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PSSERVICEITEM_S
*  INTO TABLE @DATA(IT_PSSERVICEITEM_S2).
*--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_PSSERVICEITEM_S INDEX 1 INTO DATA(WA_PSSERVICEITEM_S2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PSSERVICEITEM_S>-PERSONNELNUMBER = 1.
<PSSERVICEITEM_S>-PERSONNELNAME = 1.
<PSSERVICEITEM_S>-MATERIALNAME = 1.
<PSSERVICEITEM_S>-TOTALQUANTITY = 1.
<PSSERVICEITEM_S>-UNITOFMEASURE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PSSERVICEITEM_S-UNITOFMEASURELONGNAME, sy-vline,
  WA_PSSERVICEITEM_S-NETAMOUNT, sy-vline,
  WA_PSSERVICEITEM_S-TRANSACTIONCURRENCY, sy-vline,
  WA_PSSERVICEITEM_S-CONDITIONRATE, sy-vline,
  WA_PSSERVICEITEM_S-CONDITIONCURRENCY, sy-vline,
  WA_PSSERVICEITEM_S-DEFAULTEMAILADDRESS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PSSERVICEITEM_S 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_PSSERVICEITEM_S 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_PSSERVICEITEM_S INTO WA_PSSERVICEITEM_S.


*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_PSSERVICEITEM_S-UNITOFMEASURE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSSERVICEITEM_S-UNITOFMEASURE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SXIDN, internal->external for field DEFAULTEMAILADDRESS
CALL FUNCTION 'CONVERSION_EXIT_SXIDN_OUTPUT'
  EXPORTING
    input =                      WA_PSSERVICEITEM_S-DEFAULTEMAILADDRESS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSSERVICEITEM_S-DEFAULTEMAILADDRESS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PERI7, internal->external for field POSTINGPERIOD
CALL FUNCTION 'CONVERSION_EXIT_PERI7_OUTPUT'
  EXPORTING
    input =                      WA_PSSERVICEITEM_S-POSTINGPERIOD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSSERVICEITEM_S-POSTINGPERIOD.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit MATN1, internal->external for field MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_PSSERVICEITEM_S-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSSERVICEITEM_S-MATERIAL.
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_PSSERVICEITEM_S_STR, 
PERSONNELNUMBER TYPE STRING,
PERSONNELNAME TYPE STRING,
MATERIALNAME TYPE STRING,
TOTALQUANTITY TYPE STRING,
UNITOFMEASURE TYPE STRING,
UNITOFMEASURELONGNAME TYPE STRING,
NETAMOUNT TYPE STRING,
TRANSACTIONCURRENCY TYPE STRING,
CONDITIONRATE TYPE STRING,
CONDITIONCURRENCY TYPE STRING,
DEFAULTEMAILADDRESS TYPE STRING,
PHONENUMBER TYPE STRING,
MOBILEPHONENUMBER TYPE STRING,
COMPANYCODENAME TYPE STRING,
CITYNAME TYPE STRING,
COUNTRYNAME TYPE STRING,
HOUSENUMBER TYPE STRING,
STREETNAME TYPE STRING,
POBOX TYPE STRING,
POSTALCODE TYPE STRING,
POSTINGPERIOD TYPE STRING,
MATERIALGROUP TYPE STRING,
BILLINGDOCUMENTCATEGORY TYPE STRING,
BILLINGDOCUMENT TYPE STRING,
SALESORDERITEM TYPE STRING,
MATERIAL TYPE STRING,
BILLINGPLAN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PSSERVICEITEM_S_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_PSSERVICEITEM_S_STR-PERSONNELNUMBER sy-vline 
WA_PSSERVICEITEM_S_STR-PERSONNELNAME sy-vline 
WA_PSSERVICEITEM_S_STR-MATERIALNAME sy-vline 
WA_PSSERVICEITEM_S_STR-TOTALQUANTITY sy-vline 
WA_PSSERVICEITEM_S_STR-UNITOFMEASURE sy-vline 
WA_PSSERVICEITEM_S_STR-UNITOFMEASURELONGNAME sy-vline 
WA_PSSERVICEITEM_S_STR-NETAMOUNT sy-vline 
WA_PSSERVICEITEM_S_STR-TRANSACTIONCURRENCY sy-vline 
WA_PSSERVICEITEM_S_STR-CONDITIONRATE sy-vline 
WA_PSSERVICEITEM_S_STR-CONDITIONCURRENCY sy-vline 
WA_PSSERVICEITEM_S_STR-DEFAULTEMAILADDRESS sy-vline 
WA_PSSERVICEITEM_S_STR-PHONENUMBER sy-vline 
WA_PSSERVICEITEM_S_STR-MOBILEPHONENUMBER sy-vline 
WA_PSSERVICEITEM_S_STR-COMPANYCODENAME sy-vline 
WA_PSSERVICEITEM_S_STR-CITYNAME sy-vline 
WA_PSSERVICEITEM_S_STR-COUNTRYNAME sy-vline 
WA_PSSERVICEITEM_S_STR-HOUSENUMBER sy-vline 
WA_PSSERVICEITEM_S_STR-STREETNAME sy-vline 
WA_PSSERVICEITEM_S_STR-POBOX sy-vline 
WA_PSSERVICEITEM_S_STR-POSTALCODE sy-vline 
WA_PSSERVICEITEM_S_STR-POSTINGPERIOD sy-vline 
WA_PSSERVICEITEM_S_STR-MATERIALGROUP sy-vline 
WA_PSSERVICEITEM_S_STR-BILLINGDOCUMENTCATEGORY sy-vline 
WA_PSSERVICEITEM_S_STR-BILLINGDOCUMENT sy-vline 
WA_PSSERVICEITEM_S_STR-SALESORDERITEM sy-vline 
WA_PSSERVICEITEM_S_STR-MATERIAL sy-vline 
WA_PSSERVICEITEM_S_STR-BILLINGPLAN sy-vline      INTO ld_text SEPARATED BY SPACE.

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