ABAP Select data from SAP table ODP_SEQ_CLASS_DATA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ODP_SEQ_CLASS_DATA
*  INTO TABLE @DATA(IT_ODP_SEQ_CLASS_DATA2).
*--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_ODP_SEQ_CLASS_DATA INDEX 1 INTO DATA(WA_ODP_SEQ_CLASS_DATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ODP_SEQ_CLASS_DATA>-MANDT = 1.
<ODP_SEQ_CLASS_DATA>-PLNTY = 1.
<ODP_SEQ_CLASS_DATA>-PLNNR = 1.
<ODP_SEQ_CLASS_DATA>-PLNAL = 1.
<ODP_SEQ_CLASS_DATA>-PLNFL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ODP_SEQ_CLASS_DATA-KNOBJ, sy-vline,
  WA_ODP_SEQ_CLASS_DATA-KNNUM, sy-vline,
  WA_ODP_SEQ_CLASS_DATA-KNNAM, sy-vline,
  WA_ODP_SEQ_CLASS_DATA-L_CHG, sy-vline,
  WA_ODP_SEQ_CLASS_DATA-DEPCHG, sy-vline,
  WA_ODP_SEQ_CLASS_DATA-KNART, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ODP_SEQ_CLASS_DATA 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_ODP_SEQ_CLASS_DATA 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_ODP_SEQ_CLASS_DATA INTO WA_ODP_SEQ_CLASS_DATA.


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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field AENNR_SEQ
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ODP_SEQ_CLASS_DATA-AENNR_SEQ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ODP_SEQ_CLASS_DATA-AENNR_SEQ.
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_ODP_SEQ_CLASS_DATA_STR, 
MANDT TYPE STRING,
PLNTY TYPE STRING,
PLNNR TYPE STRING,
PLNAL TYPE STRING,
PLNFL TYPE STRING,
KNOBJ TYPE STRING,
KNNUM TYPE STRING,
KNNAM TYPE STRING,
L_CHG TYPE STRING,
DEPCHG TYPE STRING,
KNART TYPE STRING,
KNSTA TYPE STRING,
AENNR TYPE STRING,
DATUV TYPE STRING,
DATUB TYPE STRING,
LKENZ TYPE STRING,
L_AENNR TYPE STRING,
L_LKENZ TYPE STRING,
KNEDT TYPE STRING,
KNEUS TYPE STRING,
KNADT TYPE STRING,
KNAUS TYPE STRING,
KNBEO TYPE STRING,
AENNR_AUS TYPE STRING,
FLG_LOCK TYPE STRING,
HANDLE TYPE STRING,
AENNR_SEQ TYPE STRING,
DATUV_SEQ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ODP_SEQ_CLASS_DATA_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_ODP_SEQ_CLASS_DATA_STR-MANDT sy-vline 
WA_ODP_SEQ_CLASS_DATA_STR-PLNTY sy-vline 
WA_ODP_SEQ_CLASS_DATA_STR-PLNNR sy-vline 
WA_ODP_SEQ_CLASS_DATA_STR-PLNAL sy-vline 
WA_ODP_SEQ_CLASS_DATA_STR-PLNFL sy-vline 
WA_ODP_SEQ_CLASS_DATA_STR-KNOBJ sy-vline 
WA_ODP_SEQ_CLASS_DATA_STR-KNNUM sy-vline 
WA_ODP_SEQ_CLASS_DATA_STR-KNNAM sy-vline 
WA_ODP_SEQ_CLASS_DATA_STR-L_CHG sy-vline 
WA_ODP_SEQ_CLASS_DATA_STR-DEPCHG sy-vline 
WA_ODP_SEQ_CLASS_DATA_STR-KNART sy-vline 
WA_ODP_SEQ_CLASS_DATA_STR-KNSTA sy-vline 
WA_ODP_SEQ_CLASS_DATA_STR-AENNR sy-vline 
WA_ODP_SEQ_CLASS_DATA_STR-DATUV sy-vline 
WA_ODP_SEQ_CLASS_DATA_STR-DATUB sy-vline 
WA_ODP_SEQ_CLASS_DATA_STR-LKENZ sy-vline 
WA_ODP_SEQ_CLASS_DATA_STR-L_AENNR sy-vline 
WA_ODP_SEQ_CLASS_DATA_STR-L_LKENZ sy-vline 
WA_ODP_SEQ_CLASS_DATA_STR-KNEDT sy-vline 
WA_ODP_SEQ_CLASS_DATA_STR-KNEUS sy-vline 
WA_ODP_SEQ_CLASS_DATA_STR-KNADT sy-vline 
WA_ODP_SEQ_CLASS_DATA_STR-KNAUS sy-vline 
WA_ODP_SEQ_CLASS_DATA_STR-KNBEO sy-vline 
WA_ODP_SEQ_CLASS_DATA_STR-AENNR_AUS sy-vline 
WA_ODP_SEQ_CLASS_DATA_STR-FLG_LOCK sy-vline 
WA_ODP_SEQ_CLASS_DATA_STR-HANDLE sy-vline 
WA_ODP_SEQ_CLASS_DATA_STR-AENNR_SEQ sy-vline 
WA_ODP_SEQ_CLASS_DATA_STR-DATUV_SEQ sy-vline      INTO ld_text SEPARATED BY SPACE.

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