ABAP Select data from SAP table OPDATA 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 OPDATA 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 OPDATA. 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 OPDATA 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_OPDATA TYPE STANDARD TABLE OF OPDATA,
      WA_OPDATA TYPE OPDATA,
      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: <OPDATA> TYPE OPDATA.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM OPDATA
*  INTO TABLE @DATA(IT_OPDATA2).
*--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_OPDATA INDEX 1 INTO DATA(WA_OPDATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<OPDATA>-EINRI = 1.
<OPDATA>-FALNR = 1.
<OPDATA>-REFOPDATA = 1.
<OPDATA>-FZIFF = 1.
<OPDATA>-FALAE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_OPDATA-BWART, sy-vline,
  WA_OPDATA-BWIDT, sy-vline,
  WA_OPDATA-BWIZT, sy-vline,
  WA_OPDATA-STATB, sy-vline,
  WA_OPDATA-KZTXT, sy-vline,
  WA_OPDATA-ORGPF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_OPDATA 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_OPDATA 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_OPDATA INTO WA_OPDATA.


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

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

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

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

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

*Conversion exit ALPHA, internal->external for field OARNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_OPDATA-OARNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OPDATA-OARNR.
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_OPDATA_STR, 
EINRI TYPE STRING,
FALNR TYPE STRING,
REFOPDATA TYPE STRING,
FZIFF TYPE STRING,
FALAE TYPE STRING,
BWART TYPE STRING,
BWIDT TYPE STRING,
BWIZT TYPE STRING,
STATB TYPE STRING,
KZTXT TYPE STRING,
ORGPF TYPE STRING,
ORGFA TYPE STRING,
ZIMMR TYPE STRING,
OARNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_OPDATA_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_OPDATA_STR-EINRI sy-vline 
WA_OPDATA_STR-FALNR sy-vline 
WA_OPDATA_STR-REFOPDATA sy-vline 
WA_OPDATA_STR-FZIFF sy-vline 
WA_OPDATA_STR-FALAE sy-vline 
WA_OPDATA_STR-BWART sy-vline 
WA_OPDATA_STR-BWIDT sy-vline 
WA_OPDATA_STR-BWIZT sy-vline 
WA_OPDATA_STR-STATB sy-vline 
WA_OPDATA_STR-KZTXT sy-vline 
WA_OPDATA_STR-ORGPF sy-vline 
WA_OPDATA_STR-ORGFA sy-vline 
WA_OPDATA_STR-ZIMMR sy-vline 
WA_OPDATA_STR-OARNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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