ABAP Select data from SAP table P2RU_CLM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P2RU_CLM 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 P2RU_CLM. 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 P2RU_CLM 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_P2RU_CLM TYPE STANDARD TABLE OF P2RU_CLM,
      WA_P2RU_CLM TYPE P2RU_CLM,
      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: <P2RU_CLM> TYPE P2RU_CLM.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P2RU_CLM.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P2RU_CLM
  INTO TABLE IT_P2RU_CLM.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P2RU_CLM
*  INTO TABLE @DATA(IT_P2RU_CLM2).
*--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_P2RU_CLM INDEX 1 INTO DATA(WA_P2RU_CLM2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P2RU_CLM ASSIGNING <P2RU_CLM>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P2RU_CLM>-MANDT = 1.
<P2RU_CLM>-DCT_PERNR = 1.
<P2RU_CLM>-DCT_SEQNR = 1.
<P2RU_CLM>-DCT_ROWID = 1.
<P2RU_CLM>-SEQNO = 1.

ENDLOOP.

LOOP AT IT_P2RU_CLM INTO WA_P2RU_CLM.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P2RU_CLM-LGART, sy-vline,
  WA_P2RU_CLM-FPPER, sy-vline,
  WA_P2RU_CLM-IPERI, sy-vline,
  WA_P2RU_CLM-BONDT, sy-vline,
  WA_P2RU_CLM-CKDAT, sy-vline,
  WA_P2RU_CLM-CBDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P2RU_CLM 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_P2RU_CLM 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_P2RU_CLM INTO WA_P2RU_CLM.


*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_P2RU_CLM_STR, 
MANDT TYPE STRING,
DCT_PERNR TYPE STRING,
DCT_SEQNR TYPE STRING,
DCT_ROWID TYPE STRING,
SEQNO TYPE STRING,
LGART TYPE STRING,
FPPER TYPE STRING,
IPERI TYPE STRING,
BONDT TYPE STRING,
CKDAT TYPE STRING,
CBDAT TYPE STRING,
REPYR TYPE STRING,
ABKRS TYPE STRING,
PAYTY TYPE STRING,
PAYID TYPE STRING,
JUPER TYPE STRING,
OVHRS TYPE STRING,
OBHRS TYPE STRING,
OVAMT TYPE STRING,
OBAMT TYPE STRING,
WAERS TYPE STRING,
INDRI TYPE STRING,
REAMT TYPE STRING,
PFGRV TYPE STRING,
TFGRV TYPE STRING,
PERNR TYPE STRING,
SUBTY TYPE STRING,
OBJPS TYPE STRING,
SPRPS TYPE STRING,
ENDDA TYPE STRING,
BEGDA TYPE STRING,
SEQNR TYPE STRING,
APZNR TYPE STRING,
C1ZNR TYPE STRING,
IPEND TYPE STRING,
INPTY TYPE STRING,
INPID TYPE STRING,
OSEQN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P2RU_CLM_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_P2RU_CLM_STR-MANDT sy-vline 
WA_P2RU_CLM_STR-DCT_PERNR sy-vline 
WA_P2RU_CLM_STR-DCT_SEQNR sy-vline 
WA_P2RU_CLM_STR-DCT_ROWID sy-vline 
WA_P2RU_CLM_STR-SEQNO sy-vline 
WA_P2RU_CLM_STR-LGART sy-vline 
WA_P2RU_CLM_STR-FPPER sy-vline 
WA_P2RU_CLM_STR-IPERI sy-vline 
WA_P2RU_CLM_STR-BONDT sy-vline 
WA_P2RU_CLM_STR-CKDAT sy-vline 
WA_P2RU_CLM_STR-CBDAT sy-vline 
WA_P2RU_CLM_STR-REPYR sy-vline 
WA_P2RU_CLM_STR-ABKRS sy-vline 
WA_P2RU_CLM_STR-PAYTY sy-vline 
WA_P2RU_CLM_STR-PAYID sy-vline 
WA_P2RU_CLM_STR-JUPER sy-vline 
WA_P2RU_CLM_STR-OVHRS sy-vline 
WA_P2RU_CLM_STR-OBHRS sy-vline 
WA_P2RU_CLM_STR-OVAMT sy-vline 
WA_P2RU_CLM_STR-OBAMT sy-vline 
WA_P2RU_CLM_STR-WAERS sy-vline 
WA_P2RU_CLM_STR-INDRI sy-vline 
WA_P2RU_CLM_STR-REAMT sy-vline 
WA_P2RU_CLM_STR-PFGRV sy-vline 
WA_P2RU_CLM_STR-TFGRV sy-vline 
WA_P2RU_CLM_STR-PERNR sy-vline 
WA_P2RU_CLM_STR-SUBTY sy-vline 
WA_P2RU_CLM_STR-OBJPS sy-vline 
WA_P2RU_CLM_STR-SPRPS sy-vline 
WA_P2RU_CLM_STR-ENDDA sy-vline 
WA_P2RU_CLM_STR-BEGDA sy-vline 
WA_P2RU_CLM_STR-SEQNR sy-vline 
WA_P2RU_CLM_STR-APZNR sy-vline 
WA_P2RU_CLM_STR-C1ZNR sy-vline 
WA_P2RU_CLM_STR-IPEND sy-vline 
WA_P2RU_CLM_STR-INPTY sy-vline 
WA_P2RU_CLM_STR-INPID sy-vline 
WA_P2RU_CLM_STR-OSEQN sy-vline      INTO ld_text SEPARATED BY SPACE.

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