ABAP Select data from SAP table PC2IR into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PC2IR 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 PC2IR. 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 PC2IR 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_PC2IR TYPE STANDARD TABLE OF PC2IR,
      WA_PC2IR TYPE PC2IR,
      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: <PC2IR> TYPE PC2IR.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PC2IR.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PC2IR
  INTO TABLE IT_PC2IR.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PC2IR
*  INTO TABLE @DATA(IT_PC2IR2).
*--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_PC2IR INDEX 1 INTO DATA(WA_PC2IR2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PC2IR ASSIGNING <PC2IR>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PC2IR>-IRSTP = 1.
<PC2IR>-LGART = 1.
<PC2IR>-IRSBD = 1.
<PC2IR>-IRSED = 1.
<PC2IR>-IRAMT = 1.

ENDLOOP.

LOOP AT IT_PC2IR INTO WA_PC2IR.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PC2IR-IRABB, sy-vline,
  WA_PC2IR-IRASI, sy-vline,
  WA_PC2IR-ERZVW, sy-vline,
  WA_PC2IR-EEZVW, sy-vline,
  WA_PC2IR-IRWIK, sy-vline,
  WA_PC2IR-IR950, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PC2IR 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_PC2IR 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_PC2IR INTO WA_PC2IR.


*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_PC2IR_STR, 
IRSTP TYPE STRING,
LGART TYPE STRING,
IRSBD TYPE STRING,
IRSED TYPE STRING,
IRAMT TYPE STRING,
IRABB TYPE STRING,
IRASI TYPE STRING,
ERZVW TYPE STRING,
EEZVW TYPE STRING,
IRWIK TYPE STRING,
IR950 TYPE STRING,
IRWWG TYPE STRING,
IRWBB TYPE STRING,
IRGWG TYPE STRING,
IRGBB TYPE STRING,
IRAWF TYPE STRING,
IRAWB TYPE STRING,
IRCPB TYPE STRING,
IRVAC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PC2IR_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_PC2IR_STR-IRSTP sy-vline 
WA_PC2IR_STR-LGART sy-vline 
WA_PC2IR_STR-IRSBD sy-vline 
WA_PC2IR_STR-IRSED sy-vline 
WA_PC2IR_STR-IRAMT sy-vline 
WA_PC2IR_STR-IRABB sy-vline 
WA_PC2IR_STR-IRASI sy-vline 
WA_PC2IR_STR-ERZVW sy-vline 
WA_PC2IR_STR-EEZVW sy-vline 
WA_PC2IR_STR-IRWIK sy-vline 
WA_PC2IR_STR-IR950 sy-vline 
WA_PC2IR_STR-IRWWG sy-vline 
WA_PC2IR_STR-IRWBB sy-vline 
WA_PC2IR_STR-IRGWG sy-vline 
WA_PC2IR_STR-IRGBB sy-vline 
WA_PC2IR_STR-IRAWF sy-vline 
WA_PC2IR_STR-IRAWB sy-vline 
WA_PC2IR_STR-IRCPB sy-vline 
WA_PC2IR_STR-IRVAC sy-vline      INTO ld_text SEPARATED BY SPACE.

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