ABAP Select data from SAP table ROIJNOM_IO_F4_HELP into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ROIJNOM_IO_F4_HELP 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 ROIJNOM_IO_F4_HELP. 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 ROIJNOM_IO_F4_HELP 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_ROIJNOM_IO_F4_HELP TYPE STANDARD TABLE OF ROIJNOM_IO_F4_HELP,
      WA_ROIJNOM_IO_F4_HELP TYPE ROIJNOM_IO_F4_HELP,
      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: <ROIJNOM_IO_F4_HELP> TYPE ROIJNOM_IO_F4_HELP.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ROIJNOM_IO_F4_HELP.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ROIJNOM_IO_F4_HELP
  INTO TABLE IT_ROIJNOM_IO_F4_HELP.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ROIJNOM_IO_F4_HELP
*  INTO TABLE @DATA(IT_ROIJNOM_IO_F4_HELP2).
*--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_ROIJNOM_IO_F4_HELP INDEX 1 INTO DATA(WA_ROIJNOM_IO_F4_HELP2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ROIJNOM_IO_F4_HELP ASSIGNING <ROIJNOM_IO_F4_HELP>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ROIJNOM_IO_F4_HELP>-NOMTK = 1.
<ROIJNOM_IO_F4_HELP>-NOMNR = 1.
<ROIJNOM_IO_F4_HELP>-NOMIT = 1.
<ROIJNOM_IO_F4_HELP>-NOMTYP = 1.
<ROIJNOM_IO_F4_HELP>-TSYST = 1.

ENDLOOP.

LOOP AT IT_ROIJNOM_IO_F4_HELP INTO WA_ROIJNOM_IO_F4_HELP.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ROIJNOM_IO_F4_HELP-NMCARRIER, sy-vline,
  WA_ROIJNOM_IO_F4_HELP-NMSHIPPER, sy-vline,
  WA_ROIJNOM_IO_F4_HELP-NMSHTYPE, sy-vline,
  WA_ROIJNOM_IO_F4_HELP-SITYP, sy-vline,
  WA_ROIJNOM_IO_F4_HELP-DOCIND, sy-vline,
  WA_ROIJNOM_IO_F4_HELP-IDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ROIJNOM_IO_F4_HELP 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_ROIJNOM_IO_F4_HELP 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_ROIJNOM_IO_F4_HELP INTO WA_ROIJNOM_IO_F4_HELP.


*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_ROIJNOM_IO_F4_HELP-NOMTK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJNOM_IO_F4_HELP-NOMTK.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field NMCARRIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ROIJNOM_IO_F4_HELP-NMCARRIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJNOM_IO_F4_HELP-NMCARRIER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field NMSHIPPER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ROIJNOM_IO_F4_HELP-NMSHIPPER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJNOM_IO_F4_HELP-NMSHIPPER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field S_MATNR_I
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_ROIJNOM_IO_F4_HELP-S_MATNR_I
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJNOM_IO_F4_HELP-S_MATNR_I.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field INSPE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ROIJNOM_IO_F4_HELP-INSPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJNOM_IO_F4_HELP-INSPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field TANK
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ROIJNOM_IO_F4_HELP-TANK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJNOM_IO_F4_HELP-TANK.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CONS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ROIJNOM_IO_F4_HELP-CONS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJNOM_IO_F4_HELP-CONS.
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_ROIJNOM_IO_F4_HELP_STR, 
NOMTK TYPE STRING,
NOMNR TYPE STRING,
NOMIT TYPE STRING,
NOMTYP TYPE STRING,
TSYST TYPE STRING,
NMCARRIER TYPE STRING,
NMSHIPPER TYPE STRING,
NMSHTYPE TYPE STRING,
SITYP TYPE STRING,
DOCIND TYPE STRING,
IDATE TYPE STRING,
S_MATNR_I TYPE STRING,
LOCID TYPE STRING,
INSPE TYPE STRING,
TANK TYPE STRING,
CONS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ROIJNOM_IO_F4_HELP_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_ROIJNOM_IO_F4_HELP_STR-NOMTK sy-vline 
WA_ROIJNOM_IO_F4_HELP_STR-NOMNR sy-vline 
WA_ROIJNOM_IO_F4_HELP_STR-NOMIT sy-vline 
WA_ROIJNOM_IO_F4_HELP_STR-NOMTYP sy-vline 
WA_ROIJNOM_IO_F4_HELP_STR-TSYST sy-vline 
WA_ROIJNOM_IO_F4_HELP_STR-NMCARRIER sy-vline 
WA_ROIJNOM_IO_F4_HELP_STR-NMSHIPPER sy-vline 
WA_ROIJNOM_IO_F4_HELP_STR-NMSHTYPE sy-vline 
WA_ROIJNOM_IO_F4_HELP_STR-SITYP sy-vline 
WA_ROIJNOM_IO_F4_HELP_STR-DOCIND sy-vline 
WA_ROIJNOM_IO_F4_HELP_STR-IDATE sy-vline 
WA_ROIJNOM_IO_F4_HELP_STR-S_MATNR_I sy-vline 
WA_ROIJNOM_IO_F4_HELP_STR-LOCID sy-vline 
WA_ROIJNOM_IO_F4_HELP_STR-INSPE sy-vline 
WA_ROIJNOM_IO_F4_HELP_STR-TANK sy-vline 
WA_ROIJNOM_IO_F4_HELP_STR-CONS sy-vline      INTO ld_text SEPARATED BY SPACE.

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