ABAP Select data from SAP table ROIJDOCDTLS_IO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ROIJDOCDTLS_IO
*  INTO TABLE @DATA(IT_ROIJDOCDTLS_IO2).
*--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_ROIJDOCDTLS_IO INDEX 1 INTO DATA(WA_ROIJDOCDTLS_IO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ROIJDOCDTLS_IO>-DOCNR_P = 1.
<ROIJDOCDTLS_IO>-DOCITM_P = 1.
<ROIJDOCDTLS_IO>-DOCTYP_P = 1.
<ROIJDOCDTLS_IO>-NOMNR = 1.
<ROIJDOCDTLS_IO>-NOMIT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ROIJDOCDTLS_IO-TICKETNR, sy-vline,
  WA_ROIJDOCDTLS_IO-AMENG, sy-vline,
  WA_ROIJDOCDTLS_IO-SMENG, sy-vline,
  WA_ROIJDOCDTLS_IO-ISTAT, sy-vline,
  WA_ROIJDOCDTLS_IO-SRC_OBJ, sy-vline,
  WA_ROIJDOCDTLS_IO-SMATNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ROIJDOCDTLS_IO 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_ROIJDOCDTLS_IO 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_ROIJDOCDTLS_IO INTO WA_ROIJDOCDTLS_IO.


*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 DOCNR_P
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ROIJDOCDTLS_IO-DOCNR_P
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJDOCDTLS_IO-DOCNR_P.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field DOCNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ROIJDOCDTLS_IO-DOCNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJDOCDTLS_IO-DOCNR.
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_ROIJDOCDTLS_IO_STR, 
DOCNR_P TYPE STRING,
DOCITM_P TYPE STRING,
DOCTYP_P TYPE STRING,
NOMNR TYPE STRING,
NOMIT TYPE STRING,
TICKETNR TYPE STRING,
AMENG TYPE STRING,
SMENG TYPE STRING,
ISTAT TYPE STRING,
SRC_OBJ TYPE STRING,
SMATNR TYPE STRING,
PMRP TYPE STRING,
PDATUM TYPE STRING,
WORKLIST TYPE STRING,
DOCNR TYPE STRING,
POSNR TYPE STRING,
LINENR TYPE STRING,
IUDOC TYPE STRING,
IDOC TYPE STRING,
VBTYP TYPE STRING,
IRIND TYPE STRING,
NOMISTAT TYPE STRING,
LINECOLOR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ROIJDOCDTLS_IO_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_ROIJDOCDTLS_IO_STR-DOCNR_P sy-vline 
WA_ROIJDOCDTLS_IO_STR-DOCITM_P sy-vline 
WA_ROIJDOCDTLS_IO_STR-DOCTYP_P sy-vline 
WA_ROIJDOCDTLS_IO_STR-NOMNR sy-vline 
WA_ROIJDOCDTLS_IO_STR-NOMIT sy-vline 
WA_ROIJDOCDTLS_IO_STR-TICKETNR sy-vline 
WA_ROIJDOCDTLS_IO_STR-AMENG sy-vline 
WA_ROIJDOCDTLS_IO_STR-SMENG sy-vline 
WA_ROIJDOCDTLS_IO_STR-ISTAT sy-vline 
WA_ROIJDOCDTLS_IO_STR-SRC_OBJ sy-vline 
WA_ROIJDOCDTLS_IO_STR-SMATNR sy-vline 
WA_ROIJDOCDTLS_IO_STR-PMRP sy-vline 
WA_ROIJDOCDTLS_IO_STR-PDATUM sy-vline 
WA_ROIJDOCDTLS_IO_STR-WORKLIST sy-vline 
WA_ROIJDOCDTLS_IO_STR-DOCNR sy-vline 
WA_ROIJDOCDTLS_IO_STR-POSNR sy-vline 
WA_ROIJDOCDTLS_IO_STR-LINENR sy-vline 
WA_ROIJDOCDTLS_IO_STR-IUDOC sy-vline 
WA_ROIJDOCDTLS_IO_STR-IDOC sy-vline 
WA_ROIJDOCDTLS_IO_STR-VBTYP sy-vline 
WA_ROIJDOCDTLS_IO_STR-IRIND sy-vline 
WA_ROIJDOCDTLS_IO_STR-NOMISTAT sy-vline 
WA_ROIJDOCDTLS_IO_STR-LINECOLOR sy-vline      INTO ld_text SEPARATED BY SPACE.

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