ABAP Select data from SAP table P2RU_GRDOC into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P2RU_GRDOC 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_GRDOC. 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_GRDOC 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_GRDOC TYPE STANDARD TABLE OF P2RU_GRDOC,
      WA_P2RU_GRDOC TYPE P2RU_GRDOC,
      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_GRDOC> TYPE P2RU_GRDOC.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P2RU_GRDOC.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P2RU_GRDOC
  INTO TABLE IT_P2RU_GRDOC.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P2RU_GRDOC
*  INTO TABLE @DATA(IT_P2RU_GRDOC2).
*--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_GRDOC INDEX 1 INTO DATA(WA_P2RU_GRDOC2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P2RU_GRDOC ASSIGNING <P2RU_GRDOC>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P2RU_GRDOC>-MANDT = 1.
<P2RU_GRDOC>-DCT_PERNR = 1.
<P2RU_GRDOC>-DCT_SEQNR = 1.
<P2RU_GRDOC>-DCT_ROWID = 1.
<P2RU_GRDOC>-GRNUM = 1.

ENDLOOP.

LOOP AT IT_P2RU_GRDOC INTO WA_P2RU_GRDOC.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P2RU_GRDOC-GPRIO, sy-vline,
  WA_P2RU_GRDOC-RCVDD, sy-vline,
  WA_P2RU_GRDOC-GCASE, sy-vline,
  WA_P2RU_GRDOC-GCATE, sy-vline,
  WA_P2RU_GRDOC-GSTAT, sy-vline,
  WA_P2RU_GRDOC-CRETY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P2RU_GRDOC 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_GRDOC 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_GRDOC INTO WA_P2RU_GRDOC.


*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.

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_P2RU_GRDOC-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P2RU_GRDOC-LIFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field PABRJ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_P2RU_GRDOC-PABRJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P2RU_GRDOC-PABRJ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field IYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_P2RU_GRDOC-IYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P2RU_GRDOC-IYEAR.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_P2RU_GRDOC_STR, 
MANDT TYPE STRING,
DCT_PERNR TYPE STRING,
DCT_SEQNR TYPE STRING,
DCT_ROWID TYPE STRING,
GRNUM TYPE STRING,
GPRIO TYPE STRING,
RCVDD TYPE STRING,
GCASE TYPE STRING,
GCATE TYPE STRING,
GSTAT TYPE STRING,
CRETY TYPE STRING,
CRENR TYPE STRING,
LIFNR TYPE STRING,
LIFSG TYPE STRING,
RULNR TYPE STRING,
ORICN TYPE STRING,
ORIGN TYPE STRING,
ANSWR TYPE STRING,
ANSDA TYPE STRING,
SCHID TYPE STRING,
PAYTY TYPE STRING,
CHKDT TYPE STRING,
ZEINH TYPE STRING,
PABRP TYPE STRING,
PABRJ TYPE STRING,
IMONT TYPE STRING,
IYEAR TYPE STRING,
INFDA TYPE STRING,
FDEDA TYPE STRING,
KUMUL TYPE STRING,
SCRUL TYPE STRING,
PERMO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P2RU_GRDOC_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_GRDOC_STR-MANDT sy-vline 
WA_P2RU_GRDOC_STR-DCT_PERNR sy-vline 
WA_P2RU_GRDOC_STR-DCT_SEQNR sy-vline 
WA_P2RU_GRDOC_STR-DCT_ROWID sy-vline 
WA_P2RU_GRDOC_STR-GRNUM sy-vline 
WA_P2RU_GRDOC_STR-GPRIO sy-vline 
WA_P2RU_GRDOC_STR-RCVDD sy-vline 
WA_P2RU_GRDOC_STR-GCASE sy-vline 
WA_P2RU_GRDOC_STR-GCATE sy-vline 
WA_P2RU_GRDOC_STR-GSTAT sy-vline 
WA_P2RU_GRDOC_STR-CRETY sy-vline 
WA_P2RU_GRDOC_STR-CRENR sy-vline 
WA_P2RU_GRDOC_STR-LIFNR sy-vline 
WA_P2RU_GRDOC_STR-LIFSG sy-vline 
WA_P2RU_GRDOC_STR-RULNR sy-vline 
WA_P2RU_GRDOC_STR-ORICN sy-vline 
WA_P2RU_GRDOC_STR-ORIGN sy-vline 
WA_P2RU_GRDOC_STR-ANSWR sy-vline 
WA_P2RU_GRDOC_STR-ANSDA sy-vline 
WA_P2RU_GRDOC_STR-SCHID sy-vline 
WA_P2RU_GRDOC_STR-PAYTY sy-vline 
WA_P2RU_GRDOC_STR-CHKDT sy-vline 
WA_P2RU_GRDOC_STR-ZEINH sy-vline 
WA_P2RU_GRDOC_STR-PABRP sy-vline 
WA_P2RU_GRDOC_STR-PABRJ sy-vline 
WA_P2RU_GRDOC_STR-IMONT sy-vline 
WA_P2RU_GRDOC_STR-IYEAR sy-vline 
WA_P2RU_GRDOC_STR-INFDA sy-vline 
WA_P2RU_GRDOC_STR-FDEDA sy-vline 
WA_P2RU_GRDOC_STR-KUMUL sy-vline 
WA_P2RU_GRDOC_STR-SCRUL sy-vline 
WA_P2RU_GRDOC_STR-PERMO sy-vline      INTO ld_text SEPARATED BY SPACE.

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