ABAP Select data from SAP table P01C_BFELD into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P01C_BFELD 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 P01C_BFELD. 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 P01C_BFELD 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_P01C_BFELD TYPE STANDARD TABLE OF P01C_BFELD,
      WA_P01C_BFELD TYPE P01C_BFELD,
      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: <P01C_BFELD> TYPE P01C_BFELD.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P01C_BFELD.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P01C_BFELD
  INTO TABLE IT_P01C_BFELD.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P01C_BFELD
*  INTO TABLE @DATA(IT_P01C_BFELD2).
*--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_P01C_BFELD INDEX 1 INTO DATA(WA_P01C_BFELD2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P01C_BFELD ASSIGNING <P01C_BFELD>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P01C_BFELD>-PKDAT = 1.
<P01C_BFELD>-RENTE = 1.
<P01C_BFELD>-RFIRM = 1.
<P01C_BFELD>-RENPK = 1.
<P01C_BFELD>-BREAN = 1.

ENDLOOP.

LOOP AT IT_P01C_BFELD INTO WA_P01C_BFELD.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P01C_BFELD-BREAG, sy-vline,
  WA_P01C_BFELD-RENSO, sy-vline,
  WA_P01C_BFELD-RESUM, sy-vline,
  WA_P01C_BFELD-ANSPR, sy-vline,
  WA_P01C_BFELD-ATEXT, sy-vline,
  WA_P01C_BFELD-DINDEX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P01C_BFELD 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_P01C_BFELD 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_P01C_BFELD INTO WA_P01C_BFELD.


*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_P01C_BFELD_STR, 
PKDAT TYPE STRING,
RENTE TYPE STRING,
RFIRM TYPE STRING,
RENPK TYPE STRING,
BREAN TYPE STRING,
BREAG TYPE STRING,
RENSO TYPE STRING,
RESUM TYPE STRING,
ANSPR TYPE STRING,
ATEXT TYPE STRING,
DINDEX TYPE STRING,
ZFAKM TYPE STRING,
ZFAKN TYPE STRING,
ZFAMN TYPE STRING,
RUECK TYPE STRING,
ZYAAZ TYPE STRING,
ZYAVZ TYPE STRING,
ZYAZU TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P01C_BFELD_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_P01C_BFELD_STR-PKDAT sy-vline 
WA_P01C_BFELD_STR-RENTE sy-vline 
WA_P01C_BFELD_STR-RFIRM sy-vline 
WA_P01C_BFELD_STR-RENPK sy-vline 
WA_P01C_BFELD_STR-BREAN sy-vline 
WA_P01C_BFELD_STR-BREAG sy-vline 
WA_P01C_BFELD_STR-RENSO sy-vline 
WA_P01C_BFELD_STR-RESUM sy-vline 
WA_P01C_BFELD_STR-ANSPR sy-vline 
WA_P01C_BFELD_STR-ATEXT sy-vline 
WA_P01C_BFELD_STR-DINDEX sy-vline 
WA_P01C_BFELD_STR-ZFAKM sy-vline 
WA_P01C_BFELD_STR-ZFAKN sy-vline 
WA_P01C_BFELD_STR-ZFAMN sy-vline 
WA_P01C_BFELD_STR-RUECK sy-vline 
WA_P01C_BFELD_STR-ZYAAZ sy-vline 
WA_P01C_BFELD_STR-ZYAVZ sy-vline 
WA_P01C_BFELD_STR-ZYAZU sy-vline      INTO ld_text SEPARATED BY SPACE.

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