ABAP Select data from SAP table VEC_S_RULE_TAMT_OPD_USEL_ODATA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VEC_S_RULE_TAMT_OPD_USEL_ODATA
*  INTO TABLE @DATA(IT_VEC_S_RULE_TAMT_OPD_USEL_ODATA2).
*--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_VEC_S_RULE_TAMT_OPD_USEL_ODATA INDEX 1 INTO DATA(WA_VEC_S_RULE_TAMT_OPD_USEL_ODATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VEC_S_RULE_TAMT_OPD_USEL_ODATA>-SCEN_ID = 1.
<VEC_S_RULE_TAMT_OPD_USEL_ODATA>-STATE = 1.
<VEC_S_RULE_TAMT_OPD_USEL_ODATA>-RULE_NUM = 1.
<VEC_S_RULE_TAMT_OPD_USEL_ODATA>-TAGGED_AMT = 1.
<VEC_S_RULE_TAMT_OPD_USEL_ODATA>-OPD_ID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VEC_S_RULE_TAMT_OPD_USEL_ODATA-USEL_CLS_ID, sy-vline,
  WA_VEC_S_RULE_TAMT_OPD_USEL_ODATA-USEL_ID, sy-vline,
  WA_VEC_S_RULE_TAMT_OPD_USEL_ODATA-USEL_STATE, sy-vline,
  WA_VEC_S_RULE_TAMT_OPD_USEL_ODATA-SQNC, sy-vline,
  WA_VEC_S_RULE_TAMT_OPD_USEL_ODATA-FIELD_NAME, sy-vline,
  WA_VEC_S_RULE_TAMT_OPD_USEL_ODATA-FIELD_CAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VEC_S_RULE_TAMT_OPD_USEL_ODATA 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_VEC_S_RULE_TAMT_OPD_USEL_ODATA 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_VEC_S_RULE_TAMT_OPD_USEL_ODATA INTO WA_VEC_S_RULE_TAMT_OPD_USEL_ODATA.


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

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

*Conversion exit ALPHA, internal->external for field USEL_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VEC_S_RULE_TAMT_OPD_USEL_ODATA-USEL_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VEC_S_RULE_TAMT_OPD_USEL_ODATA-USEL_ID.
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_VEC_S_RULE_TAMT_OPD_USEL_ODATA_STR, 
SCEN_ID TYPE STRING,
STATE TYPE STRING,
RULE_NUM TYPE STRING,
TAGGED_AMT TYPE STRING,
OPD_ID TYPE STRING,
USEL_CLS_ID TYPE STRING,
USEL_ID TYPE STRING,
USEL_STATE TYPE STRING,
SQNC TYPE STRING,
FIELD_NAME TYPE STRING,
FIELD_CAT TYPE STRING,
NODE_ID TYPE STRING,
SIGN TYPE STRING,
OPT TYPE STRING,
LOW TYPE STRING,
HIGH TYPE STRING,
HIER_DESC TYPE STRING,
HRYID TYPE STRING,
LOW_VALUE TYPE STRING,
HIGH_VALUE TYPE STRING,
ROW_ATTRIBUTE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VEC_S_RULE_TAMT_OPD_USEL_ODATA_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_VEC_S_RULE_TAMT_OPD_USEL_ODATA_STR-SCEN_ID sy-vline 
WA_VEC_S_RULE_TAMT_OPD_USEL_ODATA_STR-STATE sy-vline 
WA_VEC_S_RULE_TAMT_OPD_USEL_ODATA_STR-RULE_NUM sy-vline 
WA_VEC_S_RULE_TAMT_OPD_USEL_ODATA_STR-TAGGED_AMT sy-vline 
WA_VEC_S_RULE_TAMT_OPD_USEL_ODATA_STR-OPD_ID sy-vline 
WA_VEC_S_RULE_TAMT_OPD_USEL_ODATA_STR-USEL_CLS_ID sy-vline 
WA_VEC_S_RULE_TAMT_OPD_USEL_ODATA_STR-USEL_ID sy-vline 
WA_VEC_S_RULE_TAMT_OPD_USEL_ODATA_STR-USEL_STATE sy-vline 
WA_VEC_S_RULE_TAMT_OPD_USEL_ODATA_STR-SQNC sy-vline 
WA_VEC_S_RULE_TAMT_OPD_USEL_ODATA_STR-FIELD_NAME sy-vline 
WA_VEC_S_RULE_TAMT_OPD_USEL_ODATA_STR-FIELD_CAT sy-vline 
WA_VEC_S_RULE_TAMT_OPD_USEL_ODATA_STR-NODE_ID sy-vline 
WA_VEC_S_RULE_TAMT_OPD_USEL_ODATA_STR-SIGN sy-vline 
WA_VEC_S_RULE_TAMT_OPD_USEL_ODATA_STR-OPT sy-vline 
WA_VEC_S_RULE_TAMT_OPD_USEL_ODATA_STR-LOW sy-vline 
WA_VEC_S_RULE_TAMT_OPD_USEL_ODATA_STR-HIGH sy-vline 
WA_VEC_S_RULE_TAMT_OPD_USEL_ODATA_STR-HIER_DESC sy-vline 
WA_VEC_S_RULE_TAMT_OPD_USEL_ODATA_STR-HRYID sy-vline 
WA_VEC_S_RULE_TAMT_OPD_USEL_ODATA_STR-LOW_VALUE sy-vline 
WA_VEC_S_RULE_TAMT_OPD_USEL_ODATA_STR-HIGH_VALUE sy-vline 
WA_VEC_S_RULE_TAMT_OPD_USEL_ODATA_STR-ROW_ATTRIBUTE sy-vline      INTO ld_text SEPARATED BY SPACE.

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