ABAP Select data from SAP table P01C_BGENM 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 P01C_BGENM 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_BGENM. 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_BGENM 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_BGENM TYPE STANDARD TABLE OF P01C_BGENM,
      WA_P01C_BGENM TYPE P01C_BGENM,
      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_BGENM> TYPE P01C_BGENM.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P01C_BGENM.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P01C_BGENM
  INTO TABLE IT_P01C_BGENM.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P01C_BGENM
*  INTO TABLE @DATA(IT_P01C_BGENM2).
*--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_BGENM INDEX 1 INTO DATA(WA_P01C_BGENM2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P01C_BGENM ASSIGNING <P01C_BGENM>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P01C_BGENM>-HBTYP = 1.
<P01C_BGENM>-PERNR = 1.
<P01C_BGENM>-SUBTY = 1.
<P01C_BGENM>-FAMST = 1.
<P01C_BGENM>-NATIO = 1.

ENDLOOP.

LOOP AT IT_P01C_BGENM INTO WA_P01C_BGENM.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P01C_BGENM-GBLND, sy-vline,
  WA_P01C_BGENM-KNZNM, sy-vline,
  WA_P01C_BGENM-ANRED, sy-vline,
  WA_P01C_BGENM-GESCH, sy-vline,
  WA_P01C_BGENM-BUKRS, sy-vline,
  WA_P01C_BGENM-WERKS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P01C_BGENM 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_BGENM 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_BGENM INTO WA_P01C_BGENM.


*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_BGENM_STR, 
HBTYP TYPE STRING,
PERNR TYPE STRING,
SUBTY TYPE STRING,
FAMST TYPE STRING,
NATIO TYPE STRING,
GBLND TYPE STRING,
KNZNM TYPE STRING,
ANRED TYPE STRING,
GESCH TYPE STRING,
BUKRS TYPE STRING,
WERKS TYPE STRING,
PERSG TYPE STRING,
PERSK TYPE STRING,
VDSK1 TYPE STRING,
GSBER TYPE STRING,
BTRTL TYPE STRING,
JUPER TYPE STRING,
ABKRS TYPE STRING,
ANSVH TYPE STRING,
STAT1 TYPE STRING,
STAT2 TYPE STRING,
STAT3 TYPE STRING,
MASSN TYPE STRING,
MASSG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P01C_BGENM_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_BGENM_STR-HBTYP sy-vline 
WA_P01C_BGENM_STR-PERNR sy-vline 
WA_P01C_BGENM_STR-SUBTY sy-vline 
WA_P01C_BGENM_STR-FAMST sy-vline 
WA_P01C_BGENM_STR-NATIO sy-vline 
WA_P01C_BGENM_STR-GBLND sy-vline 
WA_P01C_BGENM_STR-KNZNM sy-vline 
WA_P01C_BGENM_STR-ANRED sy-vline 
WA_P01C_BGENM_STR-GESCH sy-vline 
WA_P01C_BGENM_STR-BUKRS sy-vline 
WA_P01C_BGENM_STR-WERKS sy-vline 
WA_P01C_BGENM_STR-PERSG sy-vline 
WA_P01C_BGENM_STR-PERSK sy-vline 
WA_P01C_BGENM_STR-VDSK1 sy-vline 
WA_P01C_BGENM_STR-GSBER sy-vline 
WA_P01C_BGENM_STR-BTRTL sy-vline 
WA_P01C_BGENM_STR-JUPER sy-vline 
WA_P01C_BGENM_STR-ABKRS sy-vline 
WA_P01C_BGENM_STR-ANSVH sy-vline 
WA_P01C_BGENM_STR-STAT1 sy-vline 
WA_P01C_BGENM_STR-STAT2 sy-vline 
WA_P01C_BGENM_STR-STAT3 sy-vline 
WA_P01C_BGENM_STR-MASSN sy-vline 
WA_P01C_BGENM_STR-MASSG sy-vline      INTO ld_text SEPARATED BY SPACE.

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