ABAP Select data from SAP table OIJRDDOC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM OIJRDDOC
*  INTO TABLE @DATA(IT_OIJRDDOC2).
*--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_OIJRDDOC INDEX 1 INTO DATA(WA_OIJRDDOC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<OIJRDDOC>-MANDT = 1.
<OIJRDDOC>-TSYST = 1.
<OIJRDDOC>-LOCID = 1.
<OIJRDDOC>-MATNR = 1.
<OIJRDDOC>-DATUM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_OIJRDDOC-DOCNR, sy-vline,
  WA_OIJRDDOC-POSNR, sy-vline,
  WA_OIJRDDOC-LINENR, sy-vline,
  WA_OIJRDDOC-IRIND, sy-vline,
  WA_OIJRDDOC-PMENG, sy-vline,
  WA_OIJRDDOC-NOMTK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_OIJRDDOC 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_OIJRDDOC 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_OIJRDDOC INTO WA_OIJRDDOC.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_OIJRDDOC-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OIJRDDOC-MATNR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CUNIT, internal->external for field RDUOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_OIJRDDOC-RDUOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OIJRDDOC-RDUOM.
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_OIJRDDOC_STR, 
MANDT TYPE STRING,
TSYST TYPE STRING,
LOCID TYPE STRING,
MATNR TYPE STRING,
DATUM TYPE STRING,
DOCNR TYPE STRING,
POSNR TYPE STRING,
LINENR TYPE STRING,
IRIND TYPE STRING,
PMENG TYPE STRING,
NOMTK TYPE STRING,
NOMIT TYPE STRING,
NOMNR TYPE STRING,
DMENG TYPE STRING,
CHARG TYPE STRING,
VBTYP TYPE STRING,
RDUOM TYPE STRING,
BSART TYPE STRING,
NMSELECT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_OIJRDDOC_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_OIJRDDOC_STR-MANDT sy-vline 
WA_OIJRDDOC_STR-TSYST sy-vline 
WA_OIJRDDOC_STR-LOCID sy-vline 
WA_OIJRDDOC_STR-MATNR sy-vline 
WA_OIJRDDOC_STR-DATUM sy-vline 
WA_OIJRDDOC_STR-DOCNR sy-vline 
WA_OIJRDDOC_STR-POSNR sy-vline 
WA_OIJRDDOC_STR-LINENR sy-vline 
WA_OIJRDDOC_STR-IRIND sy-vline 
WA_OIJRDDOC_STR-PMENG sy-vline 
WA_OIJRDDOC_STR-NOMTK sy-vline 
WA_OIJRDDOC_STR-NOMIT sy-vline 
WA_OIJRDDOC_STR-NOMNR sy-vline 
WA_OIJRDDOC_STR-DMENG sy-vline 
WA_OIJRDDOC_STR-CHARG sy-vline 
WA_OIJRDDOC_STR-VBTYP sy-vline 
WA_OIJRDDOC_STR-RDUOM sy-vline 
WA_OIJRDDOC_STR-BSART sy-vline 
WA_OIJRDDOC_STR-NMSELECT sy-vline      INTO ld_text SEPARATED BY SPACE.

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