ABAP Select data from SAP table ROIJ_3WP_GRID_TRANS_FRGHT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ROIJ_3WP_GRID_TRANS_FRGHT 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_3WP_GRID_TRANS_FRGHT. 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_3WP_GRID_TRANS_FRGHT 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_3WP_GRID_TRANS_FRGHT TYPE STANDARD TABLE OF ROIJ_3WP_GRID_TRANS_FRGHT,
      WA_ROIJ_3WP_GRID_TRANS_FRGHT TYPE ROIJ_3WP_GRID_TRANS_FRGHT,
      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_3WP_GRID_TRANS_FRGHT> TYPE ROIJ_3WP_GRID_TRANS_FRGHT.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ROIJ_3WP_GRID_TRANS_FRGHT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ROIJ_3WP_GRID_TRANS_FRGHT
  INTO TABLE IT_ROIJ_3WP_GRID_TRANS_FRGHT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ROIJ_3WP_GRID_TRANS_FRGHT
*  INTO TABLE @DATA(IT_ROIJ_3WP_GRID_TRANS_FRGHT2).
*--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_3WP_GRID_TRANS_FRGHT INDEX 1 INTO DATA(WA_ROIJ_3WP_GRID_TRANS_FRGHT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ROIJ_3WP_GRID_TRANS_FRGHT ASSIGNING <ROIJ_3WP_GRID_TRANS_FRGHT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ROIJ_3WP_GRID_TRANS_FRGHT>-LP1 = 1.
<ROIJ_3WP_GRID_TRANS_FRGHT>-LP1_ETA = 1.
<ROIJ_3WP_GRID_TRANS_FRGHT>-LP1_ETD = 1.
<ROIJ_3WP_GRID_TRANS_FRGHT>-LP_KNOT1 = 1.
<ROIJ_3WP_GRID_TRANS_FRGHT>-DP1 = 1.

ENDLOOP.

LOOP AT IT_ROIJ_3WP_GRID_TRANS_FRGHT INTO WA_ROIJ_3WP_GRID_TRANS_FRGHT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ROIJ_3WP_GRID_TRANS_FRGHT-DP1_ETA, sy-vline,
  WA_ROIJ_3WP_GRID_TRANS_FRGHT-DP_KNOT2, sy-vline,
  WA_ROIJ_3WP_GRID_TRANS_FRGHT-DP2, sy-vline,
  WA_ROIJ_3WP_GRID_TRANS_FRGHT-DP2_ETA, sy-vline,
  WA_ROIJ_3WP_GRID_TRANS_FRGHT-DP_KNOT3, sy-vline,
  WA_ROIJ_3WP_GRID_TRANS_FRGHT-DP3, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ROIJ_3WP_GRID_TRANS_FRGHT 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_3WP_GRID_TRANS_FRGHT 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_3WP_GRID_TRANS_FRGHT INTO WA_ROIJ_3WP_GRID_TRANS_FRGHT.


*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 FLTTNOMTK
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ROIJ_3WP_GRID_TRANS_FRGHT-FLTTNOMTK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJ_3WP_GRID_TRANS_FRGHT-FLTTNOMTK.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CARRIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ROIJ_3WP_GRID_TRANS_FRGHT-CARRIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJ_3WP_GRID_TRANS_FRGHT-CARRIER.
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_3WP_GRID_TRANS_FRGHT_STR, 
LP1 TYPE STRING,
LP1_ETA TYPE STRING,
LP1_ETD TYPE STRING,
LP_KNOT1 TYPE STRING,
DP1 TYPE STRING,
DP1_ETA TYPE STRING,
DP_KNOT2 TYPE STRING,
DP2 TYPE STRING,
DP2_ETA TYPE STRING,
DP_KNOT3 TYPE STRING,
DP3 TYPE STRING,
DP3_ETA TYPE STRING,
DP_KNOT4 TYPE STRING,
KNOT1_TXT TYPE STRING,
KNOT2_TXT TYPE STRING,
KNOT3_TXT TYPE STRING,
KNOT4_TXT TYPE STRING,
FREIGHT_VENDOR TYPE STRING,
FEU TYPE STRING,
FTU TYPE STRING,
BFEU TYPE STRING,
BTEU TYPE STRING,
FLTTNOMTK TYPE STRING,
ROUTE TYPE STRING,
CARRIER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ROIJ_3WP_GRID_TRANS_FRGHT_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_3WP_GRID_TRANS_FRGHT_STR-LP1 sy-vline 
WA_ROIJ_3WP_GRID_TRANS_FRGHT_STR-LP1_ETA sy-vline 
WA_ROIJ_3WP_GRID_TRANS_FRGHT_STR-LP1_ETD sy-vline 
WA_ROIJ_3WP_GRID_TRANS_FRGHT_STR-LP_KNOT1 sy-vline 
WA_ROIJ_3WP_GRID_TRANS_FRGHT_STR-DP1 sy-vline 
WA_ROIJ_3WP_GRID_TRANS_FRGHT_STR-DP1_ETA sy-vline 
WA_ROIJ_3WP_GRID_TRANS_FRGHT_STR-DP_KNOT2 sy-vline 
WA_ROIJ_3WP_GRID_TRANS_FRGHT_STR-DP2 sy-vline 
WA_ROIJ_3WP_GRID_TRANS_FRGHT_STR-DP2_ETA sy-vline 
WA_ROIJ_3WP_GRID_TRANS_FRGHT_STR-DP_KNOT3 sy-vline 
WA_ROIJ_3WP_GRID_TRANS_FRGHT_STR-DP3 sy-vline 
WA_ROIJ_3WP_GRID_TRANS_FRGHT_STR-DP3_ETA sy-vline 
WA_ROIJ_3WP_GRID_TRANS_FRGHT_STR-DP_KNOT4 sy-vline 
WA_ROIJ_3WP_GRID_TRANS_FRGHT_STR-KNOT1_TXT sy-vline 
WA_ROIJ_3WP_GRID_TRANS_FRGHT_STR-KNOT2_TXT sy-vline 
WA_ROIJ_3WP_GRID_TRANS_FRGHT_STR-KNOT3_TXT sy-vline 
WA_ROIJ_3WP_GRID_TRANS_FRGHT_STR-KNOT4_TXT sy-vline 
WA_ROIJ_3WP_GRID_TRANS_FRGHT_STR-FREIGHT_VENDOR sy-vline 
WA_ROIJ_3WP_GRID_TRANS_FRGHT_STR-FEU sy-vline 
WA_ROIJ_3WP_GRID_TRANS_FRGHT_STR-FTU sy-vline 
WA_ROIJ_3WP_GRID_TRANS_FRGHT_STR-BFEU sy-vline 
WA_ROIJ_3WP_GRID_TRANS_FRGHT_STR-BTEU sy-vline 
WA_ROIJ_3WP_GRID_TRANS_FRGHT_STR-FLTTNOMTK sy-vline 
WA_ROIJ_3WP_GRID_TRANS_FRGHT_STR-ROUTE sy-vline 
WA_ROIJ_3WP_GRID_TRANS_FRGHT_STR-CARRIER sy-vline      INTO ld_text SEPARATED BY SPACE.

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