ABAP Select data from SAP table PKR81208 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PKR81208 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 PKR81208. 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 PKR81208 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_PKR81208 TYPE STANDARD TABLE OF PKR81208,
      WA_PKR81208 TYPE PKR81208,
      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: <PKR81208> TYPE PKR81208.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PKR81208.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PKR81208
  INTO TABLE IT_PKR81208.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PKR81208
*  INTO TABLE @DATA(IT_PKR812082).
*--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_PKR81208 INDEX 1 INTO DATA(WA_PKR812082).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PKR81208 ASSIGNING <PKR81208>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PKR81208>-PCD01 = 1.
<PKR81208>-PCD02 = 1.
<PKR81208>-PCD03 = 1.
<PKR81208>-PCD04 = 1.
<PKR81208>-PCD05 = 1.

ENDLOOP.

LOOP AT IT_PKR81208 INTO WA_PKR81208.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PKR81208-PCD06, sy-vline,
  WA_PKR81208-PCD07, sy-vline,
  WA_PKR81208-PCD08, sy-vline,
  WA_PKR81208-PCD09, sy-vline,
  WA_PKR81208-PCD10, sy-vline,
  WA_PKR81208-PCD11, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PKR81208 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_PKR81208 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_PKR81208 INTO WA_PKR81208.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_PKR81208_STR, 
PCD01 TYPE STRING,
PCD02 TYPE STRING,
PCD03 TYPE STRING,
PCD04 TYPE STRING,
PCD05 TYPE STRING,
PCD06 TYPE STRING,
PCD07 TYPE STRING,
PCD08 TYPE STRING,
PCD09 TYPE STRING,
PCD10 TYPE STRING,
PCD11 TYPE STRING,
PCD12 TYPE STRING,
PCD13 TYPE STRING,
PCD14 TYPE STRING,
PCD15 TYPE STRING,
PCD16 TYPE STRING,
PCD17 TYPE STRING,
PCD18 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PKR81208_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_PKR81208_STR-PCD01 sy-vline 
WA_PKR81208_STR-PCD02 sy-vline 
WA_PKR81208_STR-PCD03 sy-vline 
WA_PKR81208_STR-PCD04 sy-vline 
WA_PKR81208_STR-PCD05 sy-vline 
WA_PKR81208_STR-PCD06 sy-vline 
WA_PKR81208_STR-PCD07 sy-vline 
WA_PKR81208_STR-PCD08 sy-vline 
WA_PKR81208_STR-PCD09 sy-vline 
WA_PKR81208_STR-PCD10 sy-vline 
WA_PKR81208_STR-PCD11 sy-vline 
WA_PKR81208_STR-PCD12 sy-vline 
WA_PKR81208_STR-PCD13 sy-vline 
WA_PKR81208_STR-PCD14 sy-vline 
WA_PKR81208_STR-PCD15 sy-vline 
WA_PKR81208_STR-PCD16 sy-vline 
WA_PKR81208_STR-PCD17 sy-vline 
WA_PKR81208_STR-PCD18 sy-vline      INTO ld_text SEPARATED BY SPACE.

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