ABAP Select data from SAP table PC242 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PC242 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 PC242. 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 PC242 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_PC242 TYPE STANDARD TABLE OF PC242,
      WA_PC242 TYPE PC242,
      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: <PC242> TYPE PC242.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PC242.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PC242
  INTO TABLE IT_PC242.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PC242
*  INTO TABLE @DATA(IT_PC2422).
*--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_PC242 INDEX 1 INTO DATA(WA_PC2422).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PC242 ASSIGNING <PC242>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PC242>-NACHN = 1.
<PC242>-NAME2 = 1.
<PC242>-VORSW = 1.
<PC242>-VORNA = 1.
<PC242>-TITEL = 1.

ENDLOOP.

LOOP AT IT_PC242 INTO WA_PC242.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PC242-TITL2, sy-vline,
  WA_PC242-VORS2, sy-vline,
  WA_PC242-RUFNM, sy-vline,
  WA_PC242-INITS, sy-vline,
  WA_PC242-KNZNM, sy-vline,
  WA_PC242-ANRED, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PC242 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_PC242 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_PC242 INTO WA_PC242.


*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 PDATE, internal->external for field GBDAT
CALL FUNCTION 'CONVERSION_EXIT_PDATE_OUTPUT'
  EXPORTING
    input =                      WA_PC242-GBDAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PC242-GBDAT.
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_PC242_STR, 
NACHN TYPE STRING,
NAME2 TYPE STRING,
VORSW TYPE STRING,
VORNA TYPE STRING,
TITEL TYPE STRING,
TITL2 TYPE STRING,
VORS2 TYPE STRING,
RUFNM TYPE STRING,
INITS TYPE STRING,
KNZNM TYPE STRING,
ANRED TYPE STRING,
GESCH TYPE STRING,
GBDAT TYPE STRING,
NATIO TYPE STRING,
FAMST TYPE STRING,
FAMDT TYPE STRING,
SNAME TYPE STRING,
ENAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PC242_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_PC242_STR-NACHN sy-vline 
WA_PC242_STR-NAME2 sy-vline 
WA_PC242_STR-VORSW sy-vline 
WA_PC242_STR-VORNA sy-vline 
WA_PC242_STR-TITEL sy-vline 
WA_PC242_STR-TITL2 sy-vline 
WA_PC242_STR-VORS2 sy-vline 
WA_PC242_STR-RUFNM sy-vline 
WA_PC242_STR-INITS sy-vline 
WA_PC242_STR-KNZNM sy-vline 
WA_PC242_STR-ANRED sy-vline 
WA_PC242_STR-GESCH sy-vline 
WA_PC242_STR-GBDAT sy-vline 
WA_PC242_STR-NATIO sy-vline 
WA_PC242_STR-FAMST sy-vline 
WA_PC242_STR-FAMDT sy-vline 
WA_PC242_STR-SNAME sy-vline 
WA_PC242_STR-ENAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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