ABAP Select data from SAP table PC237 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 PC237 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 PC237. 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 PC237 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_PC237 TYPE STANDARD TABLE OF PC237,
      WA_PC237 TYPE PC237,
      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: <PC237> TYPE PC237.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PC237.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PC237
  INTO TABLE IT_PC237.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PC237
*  INTO TABLE @DATA(IT_PC2372).
*--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_PC237 INDEX 1 INTO DATA(WA_PC2372).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PC237 ASSIGNING <PC237>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PC237>-CNTR2 = 1.
<PC237>-BEGDA = 1.
<PC237>-ENDDA = 1.
<PC237>-STAT2 = 1.
<PC237>-REGIO = 1.

ENDLOOP.

LOOP AT IT_PC237 INTO WA_PC237.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PC237-PFIND, sy-vline,
  WA_PC237-TXSTA, sy-vline,
  WA_PC237-NODEP, sy-vline,
  WA_PC237-AGIND, sy-vline,
  WA_PC237-TXPRO, sy-vline,
  WA_PC237-FLEXI, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PC237 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_PC237 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_PC237 INTO WA_PC237.


*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 GJAHR, internal->external for field DCOMP
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_PC237-DCOMP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PC237-DCOMP.
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_PC237_STR, 
CNTR2 TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
STAT2 TYPE STRING,
REGIO TYPE STRING,
PFIND TYPE STRING,
TXSTA TYPE STRING,
NODEP TYPE STRING,
AGIND TYPE STRING,
TXPRO TYPE STRING,
FLEXI TYPE STRING,
DIRPC TYPE STRING,
RBAMT TYPE STRING,
EXAMT TYPE STRING,
NAPER TYPE STRING,
DIRNO TYPE STRING,
REGNO TYPE STRING,
RSCCD TYPE STRING,
NORSC TYPE STRING,
REGNC TYPE STRING,
FOINC TYPE STRING,
DDIRA TYPE STRING,
WAERS TYPE STRING,
DCOMP TYPE STRING,
IRP30 TYPE STRING,
LABRK TYPE STRING,
EXFIN TYPE STRING,
PAYNO TYPE STRING,
UIFNO TYPE STRING,
SDLNO TYPE STRING,
TRVLC TYPE STRING,
DRNUM TYPE STRING,
NEDPC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PC237_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_PC237_STR-CNTR2 sy-vline 
WA_PC237_STR-BEGDA sy-vline 
WA_PC237_STR-ENDDA sy-vline 
WA_PC237_STR-STAT2 sy-vline 
WA_PC237_STR-REGIO sy-vline 
WA_PC237_STR-PFIND sy-vline 
WA_PC237_STR-TXSTA sy-vline 
WA_PC237_STR-NODEP sy-vline 
WA_PC237_STR-AGIND sy-vline 
WA_PC237_STR-TXPRO sy-vline 
WA_PC237_STR-FLEXI sy-vline 
WA_PC237_STR-DIRPC sy-vline 
WA_PC237_STR-RBAMT sy-vline 
WA_PC237_STR-EXAMT sy-vline 
WA_PC237_STR-NAPER sy-vline 
WA_PC237_STR-DIRNO sy-vline 
WA_PC237_STR-REGNO sy-vline 
WA_PC237_STR-RSCCD sy-vline 
WA_PC237_STR-NORSC sy-vline 
WA_PC237_STR-REGNC sy-vline 
WA_PC237_STR-FOINC sy-vline 
WA_PC237_STR-DDIRA sy-vline 
WA_PC237_STR-WAERS sy-vline 
WA_PC237_STR-DCOMP sy-vline 
WA_PC237_STR-IRP30 sy-vline 
WA_PC237_STR-LABRK sy-vline 
WA_PC237_STR-EXFIN sy-vline 
WA_PC237_STR-PAYNO sy-vline 
WA_PC237_STR-UIFNO sy-vline 
WA_PC237_STR-SDLNO sy-vline 
WA_PC237_STR-TRVLC sy-vline 
WA_PC237_STR-DRNUM sy-vline 
WA_PC237_STR-NEDPC sy-vline      INTO ld_text SEPARATED BY SPACE.

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