ABAP Select data from SAP table P2RB_BEEVL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P2RB_BEEVL 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 P2RB_BEEVL. 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 P2RB_BEEVL 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_P2RB_BEEVL TYPE STANDARD TABLE OF P2RB_BEEVL,
      WA_P2RB_BEEVL TYPE P2RB_BEEVL,
      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: <P2RB_BEEVL> TYPE P2RB_BEEVL.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P2RB_BEEVL.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P2RB_BEEVL
  INTO TABLE IT_P2RB_BEEVL.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P2RB_BEEVL
*  INTO TABLE @DATA(IT_P2RB_BEEVL2).
*--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_P2RB_BEEVL INDEX 1 INTO DATA(WA_P2RB_BEEVL2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P2RB_BEEVL ASSIGNING <P2RB_BEEVL>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P2RB_BEEVL>-MANDT = 1.
<P2RB_BEEVL>-DCT_PERNR = 1.
<P2RB_BEEVL>-DCT_SEQNR = 1.
<P2RB_BEEVL>-DCT_ROWID = 1.
<P2RB_BEEVL>-NREVL = 1.

ENDLOOP.

LOOP AT IT_P2RB_BEEVL INTO WA_P2RB_BEEVL.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P2RB_BEEVL-BEGDA, sy-vline,
  WA_P2RB_BEEVL-ENDDA, sy-vline,
  WA_P2RB_BEEVL-APZNR, sy-vline,
  WA_P2RB_BEEVL-CNTR1, sy-vline,
  WA_P2RB_BEEVL-CNTR2, sy-vline,
  WA_P2RB_BEEVL-CNTR3, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P2RB_BEEVL 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_P2RB_BEEVL 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_P2RB_BEEVL INTO WA_P2RB_BEEVL.


*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_P2RB_BEEVL_STR, 
MANDT TYPE STRING,
DCT_PERNR TYPE STRING,
DCT_SEQNR TYPE STRING,
DCT_ROWID TYPE STRING,
NREVL TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
APZNR TYPE STRING,
CNTR1 TYPE STRING,
CNTR2 TYPE STRING,
CNTR3 TYPE STRING,
ALZNR TYPE STRING,
C1ZNR TYPE STRING,
BTZNR TYPE STRING,
ABZNR TYPE STRING,
V0TYP TYPE STRING,
V0ZNR TYPE STRING,
NREMP TYPE STRING,
APPL TYPE STRING,
SECTN TYPE STRING,
FIELD TYPE STRING,
DOMNA TYPE STRING,
PREVL TYPE STRING,
AMTFO TYPE STRING,
WAERS TYPE STRING,
DATAF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P2RB_BEEVL_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_P2RB_BEEVL_STR-MANDT sy-vline 
WA_P2RB_BEEVL_STR-DCT_PERNR sy-vline 
WA_P2RB_BEEVL_STR-DCT_SEQNR sy-vline 
WA_P2RB_BEEVL_STR-DCT_ROWID sy-vline 
WA_P2RB_BEEVL_STR-NREVL sy-vline 
WA_P2RB_BEEVL_STR-BEGDA sy-vline 
WA_P2RB_BEEVL_STR-ENDDA sy-vline 
WA_P2RB_BEEVL_STR-APZNR sy-vline 
WA_P2RB_BEEVL_STR-CNTR1 sy-vline 
WA_P2RB_BEEVL_STR-CNTR2 sy-vline 
WA_P2RB_BEEVL_STR-CNTR3 sy-vline 
WA_P2RB_BEEVL_STR-ALZNR sy-vline 
WA_P2RB_BEEVL_STR-C1ZNR sy-vline 
WA_P2RB_BEEVL_STR-BTZNR sy-vline 
WA_P2RB_BEEVL_STR-ABZNR sy-vline 
WA_P2RB_BEEVL_STR-V0TYP sy-vline 
WA_P2RB_BEEVL_STR-V0ZNR sy-vline 
WA_P2RB_BEEVL_STR-NREMP sy-vline 
WA_P2RB_BEEVL_STR-APPL sy-vline 
WA_P2RB_BEEVL_STR-SECTN sy-vline 
WA_P2RB_BEEVL_STR-FIELD sy-vline 
WA_P2RB_BEEVL_STR-DOMNA sy-vline 
WA_P2RB_BEEVL_STR-PREVL sy-vline 
WA_P2RB_BEEVL_STR-AMTFO sy-vline 
WA_P2RB_BEEVL_STR-WAERS sy-vline 
WA_P2RB_BEEVL_STR-DATAF sy-vline      INTO ld_text SEPARATED BY SPACE.

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