ABAP Select data from SAP table PSSERVICEDETAIL_S into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PSSERVICEDETAIL_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 PSSERVICEDETAIL_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 PSSERVICEDETAIL_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_PSSERVICEDETAIL_S TYPE STANDARD TABLE OF PSSERVICEDETAIL_S,
      WA_PSSERVICEDETAIL_S TYPE PSSERVICEDETAIL_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: <PSSERVICEDETAIL_S> TYPE PSSERVICEDETAIL_S.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PSSERVICEDETAIL_S
*  INTO TABLE @DATA(IT_PSSERVICEDETAIL_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_PSSERVICEDETAIL_S INDEX 1 INTO DATA(WA_PSSERVICEDETAIL_S2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PSSERVICEDETAIL_S>-COSTCTRACTIVITYTYPE = 1.
<PSSERVICEDETAIL_S>-COSTCTRACTIVITYTYPENAME = 1.
<PSSERVICEDETAIL_S>-SALESORDER = 1.
<PSSERVICEDETAIL_S>-SALESORDERITEM = 1.
<PSSERVICEDETAIL_S>-SALESORDERITEMTEXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PSSERVICEDETAIL_S-POSTINGDATE, sy-vline,
  WA_PSSERVICEDETAIL_S-DOCUMENTITEMTEXT, sy-vline,
  WA_PSSERVICEDETAIL_S-TOTALQUANTITY, sy-vline,
  WA_PSSERVICEDETAIL_S-UNITOFMEASURE, sy-vline,
  WA_PSSERVICEDETAIL_S-UNITOFMEASURENAME, sy-vline,
  WA_PSSERVICEDETAIL_S-ISPOSTPONED, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PSSERVICEDETAIL_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_PSSERVICEDETAIL_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_PSSERVICEDETAIL_S INTO WA_PSSERVICEDETAIL_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 ALPHA, internal->external for field SALESORDER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PSSERVICEDETAIL_S-SALESORDER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSSERVICEDETAIL_S-SALESORDER.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ABPSN, internal->external for field WBSELEMENT
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_PSSERVICEDETAIL_S-WBSELEMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSSERVICEDETAIL_S-WBSELEMENT.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit MATN1, internal->external for field MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_PSSERVICEDETAIL_S-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSSERVICEDETAIL_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_PSSERVICEDETAIL_S_STR, 
COSTCTRACTIVITYTYPE TYPE STRING,
COSTCTRACTIVITYTYPENAME TYPE STRING,
SALESORDER TYPE STRING,
SALESORDERITEM TYPE STRING,
SALESORDERITEMTEXT TYPE STRING,
POSTINGDATE TYPE STRING,
DOCUMENTITEMTEXT TYPE STRING,
TOTALQUANTITY TYPE STRING,
UNITOFMEASURE TYPE STRING,
UNITOFMEASURENAME TYPE STRING,
ISPOSTPONED TYPE STRING,
SALESPRICINGDOCUMENTNUMBER TYPE STRING,
DYNAMICITEMNUMBER TYPE STRING,
WBSDESCRIPTION TYPE STRING,
WBSELEMENT TYPE STRING,
POSTPONEDQUANTITY TYPE STRING,
REJECTEDQUANTITY TYPE STRING,
BILLEDQUANTITY TYPE STRING,
TRANSACTIONCURRENCY TYPE STRING,
TOTALAMOUNTINTRANSACTIONCRCY TYPE STRING,
BILLEDAMOUNT TYPE STRING,
NETAMOUNT TYPE STRING,
MATERIALGROUP TYPE STRING,
BILLINGDOCUMENTCATEGORY TYPE STRING,
POSTINGPERIOD TYPE STRING,
PERSONNEL TYPE STRING,
MATERIAL TYPE STRING,
BILLINGPLAN TYPE STRING,
WORKITEM_NAME TYPE STRING,
LASTCHANGEDTIMESTAMP TYPE STRING,
WORK_ITEM_ID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PSSERVICEDETAIL_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_PSSERVICEDETAIL_S_STR-COSTCTRACTIVITYTYPE sy-vline 
WA_PSSERVICEDETAIL_S_STR-COSTCTRACTIVITYTYPENAME sy-vline 
WA_PSSERVICEDETAIL_S_STR-SALESORDER sy-vline 
WA_PSSERVICEDETAIL_S_STR-SALESORDERITEM sy-vline 
WA_PSSERVICEDETAIL_S_STR-SALESORDERITEMTEXT sy-vline 
WA_PSSERVICEDETAIL_S_STR-POSTINGDATE sy-vline 
WA_PSSERVICEDETAIL_S_STR-DOCUMENTITEMTEXT sy-vline 
WA_PSSERVICEDETAIL_S_STR-TOTALQUANTITY sy-vline 
WA_PSSERVICEDETAIL_S_STR-UNITOFMEASURE sy-vline 
WA_PSSERVICEDETAIL_S_STR-UNITOFMEASURENAME sy-vline 
WA_PSSERVICEDETAIL_S_STR-ISPOSTPONED sy-vline 
WA_PSSERVICEDETAIL_S_STR-SALESPRICINGDOCUMENTNUMBER sy-vline 
WA_PSSERVICEDETAIL_S_STR-DYNAMICITEMNUMBER sy-vline 
WA_PSSERVICEDETAIL_S_STR-WBSDESCRIPTION sy-vline 
WA_PSSERVICEDETAIL_S_STR-WBSELEMENT sy-vline 
WA_PSSERVICEDETAIL_S_STR-POSTPONEDQUANTITY sy-vline 
WA_PSSERVICEDETAIL_S_STR-REJECTEDQUANTITY sy-vline 
WA_PSSERVICEDETAIL_S_STR-BILLEDQUANTITY sy-vline 
WA_PSSERVICEDETAIL_S_STR-TRANSACTIONCURRENCY sy-vline 
WA_PSSERVICEDETAIL_S_STR-TOTALAMOUNTINTRANSACTIONCRCY sy-vline 
WA_PSSERVICEDETAIL_S_STR-BILLEDAMOUNT sy-vline 
WA_PSSERVICEDETAIL_S_STR-NETAMOUNT sy-vline 
WA_PSSERVICEDETAIL_S_STR-MATERIALGROUP sy-vline 
WA_PSSERVICEDETAIL_S_STR-BILLINGDOCUMENTCATEGORY sy-vline 
WA_PSSERVICEDETAIL_S_STR-POSTINGPERIOD sy-vline 
WA_PSSERVICEDETAIL_S_STR-PERSONNEL sy-vline 
WA_PSSERVICEDETAIL_S_STR-MATERIAL sy-vline 
WA_PSSERVICEDETAIL_S_STR-BILLINGPLAN sy-vline 
WA_PSSERVICEDETAIL_S_STR-WORKITEM_NAME sy-vline 
WA_PSSERVICEDETAIL_S_STR-LASTCHANGEDTIMESTAMP sy-vline 
WA_PSSERVICEDETAIL_S_STR-WORK_ITEM_ID sy-vline      INTO ld_text SEPARATED BY SPACE.

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