ABAP Select data from SAP table PCHGSCOREHIST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PCHGSCOREHIST
*  INTO TABLE @DATA(IT_PCHGSCOREHIST2).
*--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_PCHGSCOREHIST INDEX 1 INTO DATA(WA_PCHGSCOREHIST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PCHGSCOREHIST>-MANDT = 1.
<PCHGSCOREHIST>-PURCHASEORDER = 1.
<PCHGSCOREHIST>-PURCHASEORDERITEM = 1.
<PCHGSCOREHIST>-LASTCHANGEDATETIME = 1.
<PCHGSCOREHIST>-LASTCHANGEUSER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PCHGSCOREHIST-USERDESCRIPTION, sy-vline,
  WA_PCHGSCOREHIST-COMMENTS, sy-vline,
  WA_PCHGSCOREHIST-INSPECTIONLOTQUALITYSCORE, sy-vline,
  WA_PCHGSCOREHIST-INSPECTIONLOTQUALITYOLDSCORE, sy-vline,
  WA_PCHGSCOREHIST-ISQUALITYSCOREAVAILABLE, sy-vline,
  WA_PCHGSCOREHIST-QUANTITYVARIANCESCORE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PCHGSCOREHIST 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_PCHGSCOREHIST 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_PCHGSCOREHIST INTO WA_PCHGSCOREHIST.


*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 PURCHASEORDER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PCHGSCOREHIST-PURCHASEORDER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCHGSCOREHIST-PURCHASEORDER.
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_PCHGSCOREHIST_STR, 
MANDT TYPE STRING,
PURCHASEORDER TYPE STRING,
PURCHASEORDERITEM TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
LASTCHANGEUSER TYPE STRING,
USERDESCRIPTION TYPE STRING,
COMMENTS TYPE STRING,
INSPECTIONLOTQUALITYSCORE TYPE STRING,
INSPECTIONLOTQUALITYOLDSCORE TYPE STRING,
ISQUALITYSCOREAVAILABLE TYPE STRING,
QUANTITYVARIANCESCORE TYPE STRING,
QUANTITYVARIANCEOLDSCORE TYPE STRING,
ISQUANTITYSCOREAVAILABLE TYPE STRING,
TIMEVARIANCESCORE TYPE STRING,
TIMEVARIANCEOLDSCORE TYPE STRING,
ISTIMESCOREAVAILABLE TYPE STRING,
PRICEVARIANCESCORE TYPE STRING,
PRICEVARIANCEOLDSCORE TYPE STRING,
ISPRICESCOREAVAILABLE TYPE STRING,
ISSCORERESETTOCALCULATED TYPE STRING,
QUALITYNOTIFICATIONSCORE TYPE STRING,
QUALITYNOTIFICATIONOLDSCORE TYPE STRING,
ISQUALITYNOTIFSCOREAVAILABLE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PCHGSCOREHIST_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_PCHGSCOREHIST_STR-MANDT sy-vline 
WA_PCHGSCOREHIST_STR-PURCHASEORDER sy-vline 
WA_PCHGSCOREHIST_STR-PURCHASEORDERITEM sy-vline 
WA_PCHGSCOREHIST_STR-LASTCHANGEDATETIME sy-vline 
WA_PCHGSCOREHIST_STR-LASTCHANGEUSER sy-vline 
WA_PCHGSCOREHIST_STR-USERDESCRIPTION sy-vline 
WA_PCHGSCOREHIST_STR-COMMENTS sy-vline 
WA_PCHGSCOREHIST_STR-INSPECTIONLOTQUALITYSCORE sy-vline 
WA_PCHGSCOREHIST_STR-INSPECTIONLOTQUALITYOLDSCORE sy-vline 
WA_PCHGSCOREHIST_STR-ISQUALITYSCOREAVAILABLE sy-vline 
WA_PCHGSCOREHIST_STR-QUANTITYVARIANCESCORE sy-vline 
WA_PCHGSCOREHIST_STR-QUANTITYVARIANCEOLDSCORE sy-vline 
WA_PCHGSCOREHIST_STR-ISQUANTITYSCOREAVAILABLE sy-vline 
WA_PCHGSCOREHIST_STR-TIMEVARIANCESCORE sy-vline 
WA_PCHGSCOREHIST_STR-TIMEVARIANCEOLDSCORE sy-vline 
WA_PCHGSCOREHIST_STR-ISTIMESCOREAVAILABLE sy-vline 
WA_PCHGSCOREHIST_STR-PRICEVARIANCESCORE sy-vline 
WA_PCHGSCOREHIST_STR-PRICEVARIANCEOLDSCORE sy-vline 
WA_PCHGSCOREHIST_STR-ISPRICESCOREAVAILABLE sy-vline 
WA_PCHGSCOREHIST_STR-ISSCORERESETTOCALCULATED sy-vline 
WA_PCHGSCOREHIST_STR-QUALITYNOTIFICATIONSCORE sy-vline 
WA_PCHGSCOREHIST_STR-QUALITYNOTIFICATIONOLDSCORE sy-vline 
WA_PCHGSCOREHIST_STR-ISQUALITYNOTIFSCOREAVAILABLE sy-vline      INTO ld_text SEPARATED BY SPACE.

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