ABAP Select data from SAP table P2RB_SVEVL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P2RB_SVEVL 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_SVEVL. 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_SVEVL 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_SVEVL TYPE STANDARD TABLE OF P2RB_SVEVL,
      WA_P2RB_SVEVL TYPE P2RB_SVEVL,
      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_SVEVL> TYPE P2RB_SVEVL.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P2RB_SVEVL.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P2RB_SVEVL
  INTO TABLE IT_P2RB_SVEVL.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P2RB_SVEVL
*  INTO TABLE @DATA(IT_P2RB_SVEVL2).
*--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_SVEVL INDEX 1 INTO DATA(WA_P2RB_SVEVL2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P2RB_SVEVL ASSIGNING <P2RB_SVEVL>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P2RB_SVEVL>-MANDT = 1.
<P2RB_SVEVL>-DCT_PERNR = 1.
<P2RB_SVEVL>-DCT_SEQNR = 1.
<P2RB_SVEVL>-DCT_ROWID = 1.
<P2RB_SVEVL>-NREMP = 1.

ENDLOOP.

LOOP AT IT_P2RB_SVEVL INTO WA_P2RB_SVEVL.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P2RB_SVEVL-BEGDA, sy-vline,
  WA_P2RB_SVEVL-ENDDA, sy-vline,
  WA_P2RB_SVEVL-RSZNR, sy-vline,
  WA_P2RB_SVEVL-RSZKN, sy-vline,
  WA_P2RB_SVEVL-RSZCA, sy-vline,
  WA_P2RB_SVEVL-TRSTE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P2RB_SVEVL 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_SVEVL 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_SVEVL INTO WA_P2RB_SVEVL.


*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_SVEVL_STR, 
MANDT TYPE STRING,
DCT_PERNR TYPE STRING,
DCT_SEQNR TYPE STRING,
DCT_ROWID TYPE STRING,
NREMP TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
RSZNR TYPE STRING,
RSZKN TYPE STRING,
RSZCA TYPE STRING,
TRSTE TYPE STRING,
BEGPC TYPE STRING,
WRKDD TYPE STRING,
WDS TYPE STRING,
MWHWK TYPE STRING,
RFMWH TYPE STRING,
CTTYP TYPE STRING,
REMES TYPE STRING,
EMPLP TYPE STRING,
WRKRS TYPE STRING,
RETIR TYPE STRING,
APTYP TYPE STRING,
MODRM TYPE STRING,
POSCD TYPE STRING,
FLYCL TYPE STRING,
BE10V12 TYPE STRING,
WRKHR TYPE STRING,
COMID TYPE STRING,
NACEC TYPE STRING,
REMTY TYPE STRING,
CAPEX TYPE STRING,
LOCUN TYPE STRING,
RCAIN TYPE STRING,
TMPFT TYPE STRING,
ILLDT TYPE STRING,
SEREX TYPE STRING,
CARME TYPE STRING,
SEXSD TYPE STRING,
TRASI TYPE STRING,
TSISD TYPE STRING,
SMWHR TYPE STRING,
SECDT TYPE STRING,
SUPCE TYPE STRING,
PSTWO TYPE STRING,
DENO TYPE STRING,
ESWDS TYPE STRING,
ESMWH TYPE STRING,
REAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P2RB_SVEVL_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_SVEVL_STR-MANDT sy-vline 
WA_P2RB_SVEVL_STR-DCT_PERNR sy-vline 
WA_P2RB_SVEVL_STR-DCT_SEQNR sy-vline 
WA_P2RB_SVEVL_STR-DCT_ROWID sy-vline 
WA_P2RB_SVEVL_STR-NREMP sy-vline 
WA_P2RB_SVEVL_STR-BEGDA sy-vline 
WA_P2RB_SVEVL_STR-ENDDA sy-vline 
WA_P2RB_SVEVL_STR-RSZNR sy-vline 
WA_P2RB_SVEVL_STR-RSZKN sy-vline 
WA_P2RB_SVEVL_STR-RSZCA sy-vline 
WA_P2RB_SVEVL_STR-TRSTE sy-vline 
WA_P2RB_SVEVL_STR-BEGPC sy-vline 
WA_P2RB_SVEVL_STR-WRKDD sy-vline 
WA_P2RB_SVEVL_STR-WDS sy-vline 
WA_P2RB_SVEVL_STR-MWHWK sy-vline 
WA_P2RB_SVEVL_STR-RFMWH sy-vline 
WA_P2RB_SVEVL_STR-CTTYP sy-vline 
WA_P2RB_SVEVL_STR-REMES sy-vline 
WA_P2RB_SVEVL_STR-EMPLP sy-vline 
WA_P2RB_SVEVL_STR-WRKRS sy-vline 
WA_P2RB_SVEVL_STR-RETIR sy-vline 
WA_P2RB_SVEVL_STR-APTYP sy-vline 
WA_P2RB_SVEVL_STR-MODRM sy-vline 
WA_P2RB_SVEVL_STR-POSCD sy-vline 
WA_P2RB_SVEVL_STR-FLYCL sy-vline 
WA_P2RB_SVEVL_STR-BE10V12 sy-vline 
WA_P2RB_SVEVL_STR-WRKHR sy-vline 
WA_P2RB_SVEVL_STR-COMID sy-vline 
WA_P2RB_SVEVL_STR-NACEC sy-vline 
WA_P2RB_SVEVL_STR-REMTY sy-vline 
WA_P2RB_SVEVL_STR-CAPEX sy-vline 
WA_P2RB_SVEVL_STR-LOCUN sy-vline 
WA_P2RB_SVEVL_STR-RCAIN sy-vline 
WA_P2RB_SVEVL_STR-TMPFT sy-vline 
WA_P2RB_SVEVL_STR-ILLDT sy-vline 
WA_P2RB_SVEVL_STR-SEREX sy-vline 
WA_P2RB_SVEVL_STR-CARME sy-vline 
WA_P2RB_SVEVL_STR-SEXSD sy-vline 
WA_P2RB_SVEVL_STR-TRASI sy-vline 
WA_P2RB_SVEVL_STR-TSISD sy-vline 
WA_P2RB_SVEVL_STR-SMWHR sy-vline 
WA_P2RB_SVEVL_STR-SECDT sy-vline 
WA_P2RB_SVEVL_STR-SUPCE sy-vline 
WA_P2RB_SVEVL_STR-PSTWO sy-vline 
WA_P2RB_SVEVL_STR-DENO sy-vline 
WA_P2RB_SVEVL_STR-ESWDS sy-vline 
WA_P2RB_SVEVL_STR-ESMWH sy-vline 
WA_P2RB_SVEVL_STR-REAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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