ABAP Select data from SAP table ROIJ_VEH_PERF_IO into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ROIJ_VEH_PERF_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 ROIJ_VEH_PERF_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 ROIJ_VEH_PERF_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_ROIJ_VEH_PERF_IO TYPE STANDARD TABLE OF ROIJ_VEH_PERF_IO,
      WA_ROIJ_VEH_PERF_IO TYPE ROIJ_VEH_PERF_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: <ROIJ_VEH_PERF_IO> TYPE ROIJ_VEH_PERF_IO.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ROIJ_VEH_PERF_IO
*  INTO TABLE @DATA(IT_ROIJ_VEH_PERF_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_ROIJ_VEH_PERF_IO INDEX 1 INTO DATA(WA_ROIJ_VEH_PERF_IO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ROIJ_VEH_PERF_IO>-CLIENT = 1.
<ROIJ_VEH_PERF_IO>-VEH_ID = 1.
<ROIJ_VEH_PERF_IO>-PEG_ID = 1.
<ROIJ_VEH_PERF_IO>-SS_DATETIME = 1.
<ROIJ_VEH_PERF_IO>-LOCID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ROIJ_VEH_PERF_IO-ANC, sy-vline,
  WA_ROIJ_VEH_PERF_IO-COMP_RATIO, sy-vline,
  WA_ROIJ_VEH_PERF_IO-CALC_TOL_USED, sy-vline,
  WA_ROIJ_VEH_PERF_IO-TOLERANCE, sy-vline,
  WA_ROIJ_VEH_PERF_IO-SHP_QTY, sy-vline,
  WA_ROIJ_VEH_PERF_IO-SHR_QTY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ROIJ_VEH_PERF_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_ROIJ_VEH_PERF_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_ROIJ_VEH_PERF_IO INTO WA_ROIJ_VEH_PERF_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 VEH_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ROIJ_VEH_PERF_IO-VEH_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJ_VEH_PERF_IO-VEH_ID.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CUNIT, internal->external for field PREVQTYUOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ROIJ_VEH_PERF_IO-PREVQTYUOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJ_VEH_PERF_IO-PREVQTYUOM.
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_ROIJ_VEH_PERF_IO_STR, 
CLIENT TYPE STRING,
VEH_ID TYPE STRING,
PEG_ID TYPE STRING,
SS_DATETIME TYPE STRING,
LOCID TYPE STRING,
ANC TYPE STRING,
COMP_RATIO TYPE STRING,
CALC_TOL_USED TYPE STRING,
TOLERANCE TYPE STRING,
SHP_QTY TYPE STRING,
SHR_QTY TYPE STRING,
SS_DIFF_VOL TYPE STRING,
DIFF_VOL_UOM TYPE STRING,
ANC_CALC_METHOD TYPE STRING,
VOYAGE_COUNTER TYPE STRING,
BADI_IMPL_NAME TYPE STRING,
REL_STATUS TYPE STRING,
NOT_REL_IND TYPE STRING,
PREVSHIPQTY TYPE STRING,
PREVQTYUOM TYPE STRING,
PREVSHOREQTY TYPE STRING,
USEIN_FLAG TYPE STRING,
ERDAT TYPE STRING,
ERZEIT TYPE STRING,
ERNAM TYPE STRING,
AEDAT TYPE STRING,
AEZEIT TYPE STRING,
AENAM TYPE STRING,
DATE TYPE STRING,
TIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ROIJ_VEH_PERF_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_ROIJ_VEH_PERF_IO_STR-CLIENT sy-vline 
WA_ROIJ_VEH_PERF_IO_STR-VEH_ID sy-vline 
WA_ROIJ_VEH_PERF_IO_STR-PEG_ID sy-vline 
WA_ROIJ_VEH_PERF_IO_STR-SS_DATETIME sy-vline 
WA_ROIJ_VEH_PERF_IO_STR-LOCID sy-vline 
WA_ROIJ_VEH_PERF_IO_STR-ANC sy-vline 
WA_ROIJ_VEH_PERF_IO_STR-COMP_RATIO sy-vline 
WA_ROIJ_VEH_PERF_IO_STR-CALC_TOL_USED sy-vline 
WA_ROIJ_VEH_PERF_IO_STR-TOLERANCE sy-vline 
WA_ROIJ_VEH_PERF_IO_STR-SHP_QTY sy-vline 
WA_ROIJ_VEH_PERF_IO_STR-SHR_QTY sy-vline 
WA_ROIJ_VEH_PERF_IO_STR-SS_DIFF_VOL sy-vline 
WA_ROIJ_VEH_PERF_IO_STR-DIFF_VOL_UOM sy-vline 
WA_ROIJ_VEH_PERF_IO_STR-ANC_CALC_METHOD sy-vline 
WA_ROIJ_VEH_PERF_IO_STR-VOYAGE_COUNTER sy-vline 
WA_ROIJ_VEH_PERF_IO_STR-BADI_IMPL_NAME sy-vline 
WA_ROIJ_VEH_PERF_IO_STR-REL_STATUS sy-vline 
WA_ROIJ_VEH_PERF_IO_STR-NOT_REL_IND sy-vline 
WA_ROIJ_VEH_PERF_IO_STR-PREVSHIPQTY sy-vline 
WA_ROIJ_VEH_PERF_IO_STR-PREVQTYUOM sy-vline 
WA_ROIJ_VEH_PERF_IO_STR-PREVSHOREQTY sy-vline 
WA_ROIJ_VEH_PERF_IO_STR-USEIN_FLAG sy-vline 
WA_ROIJ_VEH_PERF_IO_STR-ERDAT sy-vline 
WA_ROIJ_VEH_PERF_IO_STR-ERZEIT sy-vline 
WA_ROIJ_VEH_PERF_IO_STR-ERNAM sy-vline 
WA_ROIJ_VEH_PERF_IO_STR-AEDAT sy-vline 
WA_ROIJ_VEH_PERF_IO_STR-AEZEIT sy-vline 
WA_ROIJ_VEH_PERF_IO_STR-AENAM sy-vline 
WA_ROIJ_VEH_PERF_IO_STR-DATE sy-vline 
WA_ROIJ_VEH_PERF_IO_STR-TIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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