ABAP Select data from SAP table ROIJNOMHATLOAD_IO into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ROIJNOMHATLOAD_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 ROIJNOMHATLOAD_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 ROIJNOMHATLOAD_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_ROIJNOMHATLOAD_IO TYPE STANDARD TABLE OF ROIJNOMHATLOAD_IO,
      WA_ROIJNOMHATLOAD_IO TYPE ROIJNOMHATLOAD_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: <ROIJNOMHATLOAD_IO> TYPE ROIJNOMHATLOAD_IO.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ROIJNOMHATLOAD_IO
*  INTO TABLE @DATA(IT_ROIJNOMHATLOAD_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_ROIJNOMHATLOAD_IO INDEX 1 INTO DATA(WA_ROIJNOMHATLOAD_IO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ROIJNOMHATLOAD_IO>-MANDT = 1.
<ROIJNOMHATLOAD_IO>-NOMTK = 1.
<ROIJNOMHATLOAD_IO>-VERSIONNUM = 1.
<ROIJNOMHATLOAD_IO>-SEQID = 1.
<ROIJNOMHATLOAD_IO>-SEQNUM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ROIJNOMHATLOAD_IO-HATCHNUM, sy-vline,
  WA_ROIJNOMHATLOAD_IO-MATNR_I, sy-vline,
  WA_ROIJNOMHATLOAD_IO-SEQQTY, sy-vline,
  WA_ROIJNOMHATLOAD_IO-UNIT_I, sy-vline,
  WA_ROIJNOMHATLOAD_IO-LDRATE, sy-vline,
  WA_ROIJNOMHATLOAD_IO-LDTUOM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ROIJNOMHATLOAD_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_ROIJNOMHATLOAD_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_ROIJNOMHATLOAD_IO INTO WA_ROIJNOMHATLOAD_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 NOMTK
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ROIJNOMHATLOAD_IO-NOMTK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJNOMHATLOAD_IO-NOMTK.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit CUNIT, internal->external for field LDQUOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ROIJNOMHATLOAD_IO-LDQUOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJNOMHATLOAD_IO-LDQUOM.
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_ROIJNOMHATLOAD_IO_STR, 
MANDT TYPE STRING,
NOMTK TYPE STRING,
VERSIONNUM TYPE STRING,
SEQID TYPE STRING,
SEQNUM TYPE STRING,
HATCHNUM TYPE STRING,
MATNR_I TYPE STRING,
SEQQTY TYPE STRING,
UNIT_I TYPE STRING,
LDRATE TYPE STRING,
LDTUOM TYPE STRING,
LDQUOM TYPE STRING,
LDDATE TYPE STRING,
LDTIME TYPE STRING,
STEXT TYPE STRING,
ERDAT TYPE STRING,
ERZEIT TYPE STRING,
ERNAM TYPE STRING,
AEDAT TYPE STRING,
AEZEIT TYPE STRING,
AENAM TYPE STRING,
_DATAAGING TYPE STRING,
UPDKZ TYPE STRING,
TSYST TYPE STRING,
LOCID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ROIJNOMHATLOAD_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_ROIJNOMHATLOAD_IO_STR-MANDT sy-vline 
WA_ROIJNOMHATLOAD_IO_STR-NOMTK sy-vline 
WA_ROIJNOMHATLOAD_IO_STR-VERSIONNUM sy-vline 
WA_ROIJNOMHATLOAD_IO_STR-SEQID sy-vline 
WA_ROIJNOMHATLOAD_IO_STR-SEQNUM sy-vline 
WA_ROIJNOMHATLOAD_IO_STR-HATCHNUM sy-vline 
WA_ROIJNOMHATLOAD_IO_STR-MATNR_I sy-vline 
WA_ROIJNOMHATLOAD_IO_STR-SEQQTY sy-vline 
WA_ROIJNOMHATLOAD_IO_STR-UNIT_I sy-vline 
WA_ROIJNOMHATLOAD_IO_STR-LDRATE sy-vline 
WA_ROIJNOMHATLOAD_IO_STR-LDTUOM sy-vline 
WA_ROIJNOMHATLOAD_IO_STR-LDQUOM sy-vline 
WA_ROIJNOMHATLOAD_IO_STR-LDDATE sy-vline 
WA_ROIJNOMHATLOAD_IO_STR-LDTIME sy-vline 
WA_ROIJNOMHATLOAD_IO_STR-STEXT sy-vline 
WA_ROIJNOMHATLOAD_IO_STR-ERDAT sy-vline 
WA_ROIJNOMHATLOAD_IO_STR-ERZEIT sy-vline 
WA_ROIJNOMHATLOAD_IO_STR-ERNAM sy-vline 
WA_ROIJNOMHATLOAD_IO_STR-AEDAT sy-vline 
WA_ROIJNOMHATLOAD_IO_STR-AEZEIT sy-vline 
WA_ROIJNOMHATLOAD_IO_STR-AENAM sy-vline 
WA_ROIJNOMHATLOAD_IO_STR-_DATAAGING sy-vline 
WA_ROIJNOMHATLOAD_IO_STR-UPDKZ sy-vline 
WA_ROIJNOMHATLOAD_IO_STR-TSYST sy-vline 
WA_ROIJNOMHATLOAD_IO_STR-LOCID sy-vline      INTO ld_text SEPARATED BY SPACE.

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