ABAP Select data from SAP table ROIJNOMSUBITEM_G_N into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ROIJNOMSUBITEM_G_N
*  INTO TABLE @DATA(IT_ROIJNOMSUBITEM_G_N2).
*--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_ROIJNOMSUBITEM_G_N INDEX 1 INTO DATA(WA_ROIJNOMSUBITEM_G_N2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ROIJNOMSUBITEM_G_N>-MATNR_I = 1.
<ROIJNOMSUBITEM_G_N>-SUBITM_QTY = 1.
<ROIJNOMSUBITEM_G_N>-SUBITM_UOM = 1.
<ROIJNOMSUBITEM_G_N>-CAPACITY = 1.
<ROIJNOMSUBITEM_G_N>-CAPACITY_UOM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ROIJNOMSUBITEM_G_N-PL_DATE, sy-vline,
  WA_ROIJNOMSUBITEM_G_N-PL_TIME, sy-vline,
  WA_ROIJNOMSUBITEM_G_N-SCHED_TST, sy-vline,
  WA_ROIJNOMSUBITEM_G_N-SUBITM_ACTQTY, sy-vline,
  WA_ROIJNOMSUBITEM_G_N-SUBITM_ACTUOM, sy-vline,
  WA_ROIJNOMSUBITEM_G_N-ACT_DATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ROIJNOMSUBITEM_G_N 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_ROIJNOMSUBITEM_G_N 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_ROIJNOMSUBITEM_G_N INTO WA_ROIJNOMSUBITEM_G_N.


*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 MATN5, internal->external for field MATNR_I
CALL FUNCTION 'CONVERSION_EXIT_MATN5_OUTPUT'
  EXPORTING
    input =                      WA_ROIJNOMSUBITEM_G_N-MATNR_I
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJNOMSUBITEM_G_N-MATNR_I.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field SUBITM_UOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ROIJNOMSUBITEM_G_N-SUBITM_UOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJNOMSUBITEM_G_N-SUBITM_UOM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field CAPACITY_UOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ROIJNOMSUBITEM_G_N-CAPACITY_UOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJNOMSUBITEM_G_N-CAPACITY_UOM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field SUBITM_ACTUOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ROIJNOMSUBITEM_G_N-SUBITM_ACTUOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJNOMSUBITEM_G_N-SUBITM_ACTUOM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field TICKET_KEY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ROIJNOMSUBITEM_G_N-TICKET_KEY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJNOMSUBITEM_G_N-TICKET_KEY.
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_ROIJNOMSUBITEM_G_N_STR, 
MATNR_I TYPE STRING,
SUBITM_QTY TYPE STRING,
SUBITM_UOM TYPE STRING,
CAPACITY TYPE STRING,
CAPACITY_UOM TYPE STRING,
PL_DATE TYPE STRING,
PL_TIME TYPE STRING,
SCHED_TST TYPE STRING,
SUBITM_ACTQTY TYPE STRING,
SUBITM_ACTUOM TYPE STRING,
ACT_DATE TYPE STRING,
ACT_TIME TYPE STRING,
ACTUAL_TST TYPE STRING,
TICKET_KEY TYPE STRING,
TICKET_ITEM TYPE STRING,
TICKET_VERSION TYPE STRING,
TICKET_PURPOSE TYPE STRING,
STATUS TYPE STRING,
DELIND TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ROIJNOMSUBITEM_G_N_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_ROIJNOMSUBITEM_G_N_STR-MATNR_I sy-vline 
WA_ROIJNOMSUBITEM_G_N_STR-SUBITM_QTY sy-vline 
WA_ROIJNOMSUBITEM_G_N_STR-SUBITM_UOM sy-vline 
WA_ROIJNOMSUBITEM_G_N_STR-CAPACITY sy-vline 
WA_ROIJNOMSUBITEM_G_N_STR-CAPACITY_UOM sy-vline 
WA_ROIJNOMSUBITEM_G_N_STR-PL_DATE sy-vline 
WA_ROIJNOMSUBITEM_G_N_STR-PL_TIME sy-vline 
WA_ROIJNOMSUBITEM_G_N_STR-SCHED_TST sy-vline 
WA_ROIJNOMSUBITEM_G_N_STR-SUBITM_ACTQTY sy-vline 
WA_ROIJNOMSUBITEM_G_N_STR-SUBITM_ACTUOM sy-vline 
WA_ROIJNOMSUBITEM_G_N_STR-ACT_DATE sy-vline 
WA_ROIJNOMSUBITEM_G_N_STR-ACT_TIME sy-vline 
WA_ROIJNOMSUBITEM_G_N_STR-ACTUAL_TST sy-vline 
WA_ROIJNOMSUBITEM_G_N_STR-TICKET_KEY sy-vline 
WA_ROIJNOMSUBITEM_G_N_STR-TICKET_ITEM sy-vline 
WA_ROIJNOMSUBITEM_G_N_STR-TICKET_VERSION sy-vline 
WA_ROIJNOMSUBITEM_G_N_STR-TICKET_PURPOSE sy-vline 
WA_ROIJNOMSUBITEM_G_N_STR-STATUS sy-vline 
WA_ROIJNOMSUBITEM_G_N_STR-DELIND sy-vline      INTO ld_text SEPARATED BY SPACE.

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