ABAP Select data from SAP table ROIJSUBITEMEVENTS_IO into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ROIJSUBITEMEVENTS_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 ROIJSUBITEMEVENTS_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 ROIJSUBITEMEVENTS_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_ROIJSUBITEMEVENTS_IO TYPE STANDARD TABLE OF ROIJSUBITEMEVENTS_IO,
      WA_ROIJSUBITEMEVENTS_IO TYPE ROIJSUBITEMEVENTS_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: <ROIJSUBITEMEVENTS_IO> TYPE ROIJSUBITEMEVENTS_IO.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ROIJSUBITEMEVENTS_IO
*  INTO TABLE @DATA(IT_ROIJSUBITEMEVENTS_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_ROIJSUBITEMEVENTS_IO INDEX 1 INTO DATA(WA_ROIJSUBITEMEVENTS_IO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ROIJSUBITEMEVENTS_IO>-CLIENT = 1.
<ROIJSUBITEMEVENTS_IO>-NOMTK = 1.
<ROIJSUBITEMEVENTS_IO>-NOMIT = 1.
<ROIJSUBITEMEVENTS_IO>-SUBITEM = 1.
<ROIJSUBITEMEVENTS_IO>-EVENT_NR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ROIJSUBITEMEVENTS_IO-NOMNR, sy-vline,
  WA_ROIJSUBITEMEVENTS_IO-TYPE, sy-vline,
  WA_ROIJSUBITEMEVENTS_IO-EV_SEQ, sy-vline,
  WA_ROIJSUBITEMEVENTS_IO-SHITEM, sy-vline,
  WA_ROIJSUBITEMEVENTS_IO-STATUS, sy-vline,
  WA_ROIJSUBITEMEVENTS_IO-PSTDTF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ROIJSUBITEMEVENTS_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_ROIJSUBITEMEVENTS_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_ROIJSUBITEMEVENTS_IO INTO WA_ROIJSUBITEMEVENTS_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 NOMTK
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ROIJSUBITEMEVENTS_IO-NOMTK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJSUBITEMEVENTS_IO-NOMTK.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EV_SEQ
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ROIJSUBITEMEVENTS_IO-EV_SEQ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJSUBITEMEVENTS_IO-EV_SEQ.
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_ROIJSUBITEMEVENTS_IO_STR, 
CLIENT TYPE STRING,
NOMTK TYPE STRING,
NOMIT TYPE STRING,
SUBITEM TYPE STRING,
EVENT_NR TYPE STRING,
NOMNR TYPE STRING,
TYPE TYPE STRING,
EV_SEQ TYPE STRING,
SHITEM TYPE STRING,
STATUS TYPE STRING,
PSTDTF TYPE STRING,
PSTTMF TYPE STRING,
PSTDTT TYPE STRING,
PSTTMT TYPE STRING,
PEDDTF TYPE STRING,
PEDTMF TYPE STRING,
PEDDTT TYPE STRING,
PEDTMT TYPE STRING,
CRE_NAME TYPE STRING,
CRE_DATE TYPE STRING,
CRE_TIME TYPE STRING,
CHA_NAME TYPE STRING,
CHA_DATE TYPE STRING,
CHA_TIME TYPE STRING,
ASTDTF TYPE STRING,
ASTTMF TYPE STRING,
ASTDTT TYPE STRING,
ASTTMT TYPE STRING,
AEDDTF TYPE STRING,
AEDTMF TYPE STRING,
AEDDTT TYPE STRING,
AEDTMT TYPE STRING,
DELIND TYPE STRING,
LONGTEXT TYPE STRING,
UPDFLAG TYPE STRING,
DEF TYPE STRING,
TPNUM TYPE STRING,
_DATAAGING TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ROIJSUBITEMEVENTS_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_ROIJSUBITEMEVENTS_IO_STR-CLIENT sy-vline 
WA_ROIJSUBITEMEVENTS_IO_STR-NOMTK sy-vline 
WA_ROIJSUBITEMEVENTS_IO_STR-NOMIT sy-vline 
WA_ROIJSUBITEMEVENTS_IO_STR-SUBITEM sy-vline 
WA_ROIJSUBITEMEVENTS_IO_STR-EVENT_NR sy-vline 
WA_ROIJSUBITEMEVENTS_IO_STR-NOMNR sy-vline 
WA_ROIJSUBITEMEVENTS_IO_STR-TYPE sy-vline 
WA_ROIJSUBITEMEVENTS_IO_STR-EV_SEQ sy-vline 
WA_ROIJSUBITEMEVENTS_IO_STR-SHITEM sy-vline 
WA_ROIJSUBITEMEVENTS_IO_STR-STATUS sy-vline 
WA_ROIJSUBITEMEVENTS_IO_STR-PSTDTF sy-vline 
WA_ROIJSUBITEMEVENTS_IO_STR-PSTTMF sy-vline 
WA_ROIJSUBITEMEVENTS_IO_STR-PSTDTT sy-vline 
WA_ROIJSUBITEMEVENTS_IO_STR-PSTTMT sy-vline 
WA_ROIJSUBITEMEVENTS_IO_STR-PEDDTF sy-vline 
WA_ROIJSUBITEMEVENTS_IO_STR-PEDTMF sy-vline 
WA_ROIJSUBITEMEVENTS_IO_STR-PEDDTT sy-vline 
WA_ROIJSUBITEMEVENTS_IO_STR-PEDTMT sy-vline 
WA_ROIJSUBITEMEVENTS_IO_STR-CRE_NAME sy-vline 
WA_ROIJSUBITEMEVENTS_IO_STR-CRE_DATE sy-vline 
WA_ROIJSUBITEMEVENTS_IO_STR-CRE_TIME sy-vline 
WA_ROIJSUBITEMEVENTS_IO_STR-CHA_NAME sy-vline 
WA_ROIJSUBITEMEVENTS_IO_STR-CHA_DATE sy-vline 
WA_ROIJSUBITEMEVENTS_IO_STR-CHA_TIME sy-vline 
WA_ROIJSUBITEMEVENTS_IO_STR-ASTDTF sy-vline 
WA_ROIJSUBITEMEVENTS_IO_STR-ASTTMF sy-vline 
WA_ROIJSUBITEMEVENTS_IO_STR-ASTDTT sy-vline 
WA_ROIJSUBITEMEVENTS_IO_STR-ASTTMT sy-vline 
WA_ROIJSUBITEMEVENTS_IO_STR-AEDDTF sy-vline 
WA_ROIJSUBITEMEVENTS_IO_STR-AEDTMF sy-vline 
WA_ROIJSUBITEMEVENTS_IO_STR-AEDDTT sy-vline 
WA_ROIJSUBITEMEVENTS_IO_STR-AEDTMT sy-vline 
WA_ROIJSUBITEMEVENTS_IO_STR-DELIND sy-vline 
WA_ROIJSUBITEMEVENTS_IO_STR-LONGTEXT sy-vline 
WA_ROIJSUBITEMEVENTS_IO_STR-UPDFLAG sy-vline 
WA_ROIJSUBITEMEVENTS_IO_STR-DEF sy-vline 
WA_ROIJSUBITEMEVENTS_IO_STR-TPNUM sy-vline 
WA_ROIJSUBITEMEVENTS_IO_STR-_DATAAGING sy-vline      INTO ld_text SEPARATED BY SPACE.

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