ABAP Select data from SAP table PC252 into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP PC252 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 PC252. 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 PC252 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_PC252 TYPE STANDARD TABLE OF PC252,
      WA_PC252 TYPE PC252,
      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: <PC252> TYPE PC252.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PC252.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PC252
  INTO TABLE IT_PC252.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PC252
*  INTO TABLE @DATA(IT_PC2522).
*--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_PC252 INDEX 1 INTO DATA(WA_PC2522).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PC252 ASSIGNING <PC252>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PC252>-KINSP = 1.
<PC252>-AANTS = 1.
<PC252>-BEGDA = 1.
<PC252>-ENDDA = 1.
<PC252>-FAMSA = 1.

ENDLOOP.

LOOP AT IT_PC252 INTO WA_PC252.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PC252-KNDNR, sy-vline,
  WA_PC252-KINOX, sy-vline,
  WA_PC252-DPW_X, sy-vline,
  WA_PC252-AARDX, sy-vline,
  WA_PC252-PLKOX, sy-vline,
  WA_PC252-KOOPX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PC252 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_PC252 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_PC252 INTO WA_PC252.


*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_PC252_STR, 
KINSP TYPE STRING,
AANTS TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
FAMSA TYPE STRING,
KNDNR TYPE STRING,
KINOX TYPE STRING,
DPW_X TYPE STRING,
AARDX TYPE STRING,
PLKOX TYPE STRING,
KOOPX TYPE STRING,
KOWNX TYPE STRING,
EHDGN TYPE STRING,
EHBDR TYPE STRING,
NUCOS TYPE STRING,
ERCOM TYPE STRING,
PACOM TYPE STRING,
CPCOM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PC252_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_PC252_STR-KINSP sy-vline 
WA_PC252_STR-AANTS sy-vline 
WA_PC252_STR-BEGDA sy-vline 
WA_PC252_STR-ENDDA sy-vline 
WA_PC252_STR-FAMSA sy-vline 
WA_PC252_STR-KNDNR sy-vline 
WA_PC252_STR-KINOX sy-vline 
WA_PC252_STR-DPW_X sy-vline 
WA_PC252_STR-AARDX sy-vline 
WA_PC252_STR-PLKOX sy-vline 
WA_PC252_STR-KOOPX sy-vline 
WA_PC252_STR-KOWNX sy-vline 
WA_PC252_STR-EHDGN sy-vline 
WA_PC252_STR-EHBDR sy-vline 
WA_PC252_STR-NUCOS sy-vline 
WA_PC252_STR-ERCOM sy-vline 
WA_PC252_STR-PACOM sy-vline 
WA_PC252_STR-CPCOM sy-vline      INTO ld_text SEPARATED BY SPACE.

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