ABAP Select data from SAP table RODSHDTR into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RODSHDTR 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 RODSHDTR. 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 RODSHDTR 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_RODSHDTR TYPE STANDARD TABLE OF RODSHDTR,
      WA_RODSHDTR TYPE RODSHDTR,
      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: <RODSHDTR> TYPE RODSHDTR.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RODSHDTR
*  INTO TABLE @DATA(IT_RODSHDTR2).
*--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_RODSHDTR INDEX 1 INTO DATA(WA_RODSHDTR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RODSHDTR>-OLTPSOURCE = 1.
<RODSHDTR>-OBJVERS = 1.
<RODSHDTR>-TYPE = 1.
<RODSHDTR>-APPLNM = 1.
<RODSHDTR>-BASOSOURCE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RODSHDTR-DELTA_20A, sy-vline,
  WA_RODSHDTR-STOCKUPD, sy-vline,
  WA_RODSHDTR-EXMETHOD, sy-vline,
  WA_RODSHDTR-EXTRACTOR, sy-vline,
  WA_RODSHDTR-EXSTRUCT, sy-vline,
  WA_RODSHDTR-GENFLAG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RODSHDTR 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_RODSHDTR 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_RODSHDTR INTO WA_RODSHDTR.


*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 DELTA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RODSHDTR-DELTA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RODSHDTR-DELTA.
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_RODSHDTR_STR, 
OLTPSOURCE TYPE STRING,
OBJVERS TYPE STRING,
TYPE TYPE STRING,
APPLNM TYPE STRING,
BASOSOURCE TYPE STRING,
DELTA_20A TYPE STRING,
STOCKUPD TYPE STRING,
EXMETHOD TYPE STRING,
EXTRACTOR TYPE STRING,
EXSTRUCT TYPE STRING,
GENFLAG TYPE STRING,
VIRTCUBE TYPE STRING,
TSTPNM TYPE STRING,
TSTPDAT TYPE STRING,
TSTPTIM TYPE STRING,
TXTSH TYPE STRING,
TXTMD TYPE STRING,
TXTLG TYPE STRING,
TECHEXT TYPE STRING,
APPL_PROP TYPE STRING,
DELTA TYPE STRING,
TFMETHODS TYPE STRING,
ARCHMETHOD TYPE STRING,
INITSIMU TYPE STRING,
DUPREC TYPE STRING,
ZDD_ABLE TYPE STRING,
PRIMSEGID TYPE STRING,
OBJECTFD TYPE STRING,
CONTSRCVERS TYPE STRING,
RECONCILIATION TYPE STRING,
REALTIME TYPE STRING,
HYBRIDACCESS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RODSHDTR_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_RODSHDTR_STR-OLTPSOURCE sy-vline 
WA_RODSHDTR_STR-OBJVERS sy-vline 
WA_RODSHDTR_STR-TYPE sy-vline 
WA_RODSHDTR_STR-APPLNM sy-vline 
WA_RODSHDTR_STR-BASOSOURCE sy-vline 
WA_RODSHDTR_STR-DELTA_20A sy-vline 
WA_RODSHDTR_STR-STOCKUPD sy-vline 
WA_RODSHDTR_STR-EXMETHOD sy-vline 
WA_RODSHDTR_STR-EXTRACTOR sy-vline 
WA_RODSHDTR_STR-EXSTRUCT sy-vline 
WA_RODSHDTR_STR-GENFLAG sy-vline 
WA_RODSHDTR_STR-VIRTCUBE sy-vline 
WA_RODSHDTR_STR-TSTPNM sy-vline 
WA_RODSHDTR_STR-TSTPDAT sy-vline 
WA_RODSHDTR_STR-TSTPTIM sy-vline 
WA_RODSHDTR_STR-TXTSH sy-vline 
WA_RODSHDTR_STR-TXTMD sy-vline 
WA_RODSHDTR_STR-TXTLG sy-vline 
WA_RODSHDTR_STR-TECHEXT sy-vline 
WA_RODSHDTR_STR-APPL_PROP sy-vline 
WA_RODSHDTR_STR-DELTA sy-vline 
WA_RODSHDTR_STR-TFMETHODS sy-vline 
WA_RODSHDTR_STR-ARCHMETHOD sy-vline 
WA_RODSHDTR_STR-INITSIMU sy-vline 
WA_RODSHDTR_STR-DUPREC sy-vline 
WA_RODSHDTR_STR-ZDD_ABLE sy-vline 
WA_RODSHDTR_STR-PRIMSEGID sy-vline 
WA_RODSHDTR_STR-OBJECTFD sy-vline 
WA_RODSHDTR_STR-CONTSRCVERS sy-vline 
WA_RODSHDTR_STR-RECONCILIATION sy-vline 
WA_RODSHDTR_STR-REALTIME sy-vline 
WA_RODSHDTR_STR-HYBRIDACCESS sy-vline      INTO ld_text SEPARATED BY SPACE.

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