ABAP Select data from SAP table PC2CO_GAR into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PC2CO_GAR 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 PC2CO_GAR. 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 PC2CO_GAR 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_PC2CO_GAR TYPE STANDARD TABLE OF PC2CO_GAR,
      WA_PC2CO_GAR TYPE PC2CO_GAR,
      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: <PC2CO_GAR> TYPE PC2CO_GAR.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PC2CO_GAR.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PC2CO_GAR
  INTO TABLE IT_PC2CO_GAR.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PC2CO_GAR
*  INTO TABLE @DATA(IT_PC2CO_GAR2).
*--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_PC2CO_GAR INDEX 1 INTO DATA(WA_PC2CO_GAR2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PC2CO_GAR ASSIGNING <PC2CO_GAR>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PC2CO_GAR>-CNTR1 = 1.
<PC2CO_GAR>-GCATE = 1.
<PC2CO_GAR>-GRNUM = 1.
<PC2CO_GAR>-INPER = 1.
<PC2CO_GAR>-LGART = 1.

ENDLOOP.

LOOP AT IT_PC2CO_GAR INTO WA_PC2CO_GAR.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PC2CO_GAR-GPRIO, sy-vline,
  WA_PC2CO_GAR-QUOVA, sy-vline,
  WA_PC2CO_GAR-DISVA, sy-vline,
  WA_PC2CO_GAR-GARBA, sy-vline,
  WA_PC2CO_GAR-WAERS, sy-vline,
  WA_PC2CO_GAR-LIFNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PC2CO_GAR 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_PC2CO_GAR 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_PC2CO_GAR INTO WA_PC2CO_GAR.


*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 LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PC2CO_GAR-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PC2CO_GAR-LIFNR.
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_PC2CO_GAR_STR, 
CNTR1 TYPE STRING,
GCATE TYPE STRING,
GRNUM TYPE STRING,
INPER TYPE STRING,
LGART TYPE STRING,
GPRIO TYPE STRING,
QUOVA TYPE STRING,
DISVA TYPE STRING,
GARBA TYPE STRING,
WAERS TYPE STRING,
LIFNR TYPE STRING,
CNTR3 TYPE STRING,
DIFRE TYPE STRING,
FPPER TYPE STRING,
EBASE TYPE STRING,
FPAGO TYPE STRING,
PPAGO TYPE STRING,
MPAGO TYPE STRING,
ARPLA TYPE STRING,
TRESU TYPE STRING,
FLIQU TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PC2CO_GAR_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_PC2CO_GAR_STR-CNTR1 sy-vline 
WA_PC2CO_GAR_STR-GCATE sy-vline 
WA_PC2CO_GAR_STR-GRNUM sy-vline 
WA_PC2CO_GAR_STR-INPER sy-vline 
WA_PC2CO_GAR_STR-LGART sy-vline 
WA_PC2CO_GAR_STR-GPRIO sy-vline 
WA_PC2CO_GAR_STR-QUOVA sy-vline 
WA_PC2CO_GAR_STR-DISVA sy-vline 
WA_PC2CO_GAR_STR-GARBA sy-vline 
WA_PC2CO_GAR_STR-WAERS sy-vline 
WA_PC2CO_GAR_STR-LIFNR sy-vline 
WA_PC2CO_GAR_STR-CNTR3 sy-vline 
WA_PC2CO_GAR_STR-DIFRE sy-vline 
WA_PC2CO_GAR_STR-FPPER sy-vline 
WA_PC2CO_GAR_STR-EBASE sy-vline 
WA_PC2CO_GAR_STR-FPAGO sy-vline 
WA_PC2CO_GAR_STR-PPAGO sy-vline 
WA_PC2CO_GAR_STR-MPAGO sy-vline 
WA_PC2CO_GAR_STR-ARPLA sy-vline 
WA_PC2CO_GAR_STR-TRESU sy-vline 
WA_PC2CO_GAR_STR-FLIQU sy-vline      INTO ld_text SEPARATED BY SPACE.

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