ABAP Select data from SAP table ROIJLTLIST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ROIJLTLIST
*  INTO TABLE @DATA(IT_ROIJLTLIST2).
*--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_ROIJLTLIST INDEX 1 INTO DATA(WA_ROIJLTLIST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ROIJLTLIST>-NOMTK = 1.
<ROIJLTLIST>-NOMIT = 1.
<ROIJLTLIST>-PEGID = 1.
<ROIJLTLIST>-LOCID = 1.
<ROIJLTLIST>-DOCNR_FC = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ROIJLTLIST-DOCIND_FC, sy-vline,
  WA_ROIJLTLIST-DOCITM_FC, sy-vline,
  WA_ROIJLTLIST-LT_ACT, sy-vline,
  WA_ROIJLTLIST-LT_UOM, sy-vline,
  WA_ROIJLTLIST-DEM, sy-vline,
  WA_ROIJLTLIST-DEM_CURR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ROIJLTLIST 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_ROIJLTLIST 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_ROIJLTLIST INTO WA_ROIJLTLIST.


*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_ROIJLTLIST-NOMTK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJLTLIST-NOMTK.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CUNIT, internal->external for field LT_UOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ROIJLTLIST-LT_UOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJLTLIST-LT_UOM.
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_ROIJLTLIST_STR, 
NOMTK TYPE STRING,
NOMIT TYPE STRING,
PEGID TYPE STRING,
LOCID TYPE STRING,
DOCNR_FC TYPE STRING,
DOCIND_FC TYPE STRING,
DOCITM_FC TYPE STRING,
LT_ACT TYPE STRING,
LT_UOM TYPE STRING,
DEM TYPE STRING,
DEM_CURR TYPE STRING,
EVENT TYPE STRING,
LINETYPE TYPE STRING,
STARTDATE TYPE STRING,
ENDDATE TYPE STRING,
STARTTIME TYPE STRING,
ENDTIME TYPE STRING,
INFLUENCE_RATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ROIJLTLIST_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_ROIJLTLIST_STR-NOMTK sy-vline 
WA_ROIJLTLIST_STR-NOMIT sy-vline 
WA_ROIJLTLIST_STR-PEGID sy-vline 
WA_ROIJLTLIST_STR-LOCID sy-vline 
WA_ROIJLTLIST_STR-DOCNR_FC sy-vline 
WA_ROIJLTLIST_STR-DOCIND_FC sy-vline 
WA_ROIJLTLIST_STR-DOCITM_FC sy-vline 
WA_ROIJLTLIST_STR-LT_ACT sy-vline 
WA_ROIJLTLIST_STR-LT_UOM sy-vline 
WA_ROIJLTLIST_STR-DEM sy-vline 
WA_ROIJLTLIST_STR-DEM_CURR sy-vline 
WA_ROIJLTLIST_STR-EVENT sy-vline 
WA_ROIJLTLIST_STR-LINETYPE sy-vline 
WA_ROIJLTLIST_STR-STARTDATE sy-vline 
WA_ROIJLTLIST_STR-ENDDATE sy-vline 
WA_ROIJLTLIST_STR-STARTTIME sy-vline 
WA_ROIJLTLIST_STR-ENDTIME sy-vline 
WA_ROIJLTLIST_STR-INFLUENCE_RATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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