ABAP Select data from SAP table ISU_DISCOUNT_OPERAND_VALUE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISU_DISCOUNT_OPERAND_VALUE
*  INTO TABLE @DATA(IT_ISU_DISCOUNT_OPERAND_VALUE2).
*--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_ISU_DISCOUNT_OPERAND_VALUE INDEX 1 INTO DATA(WA_ISU_DISCOUNT_OPERAND_VALUE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISU_DISCOUNT_OPERAND_VALUE>-DATE_FROM = 1.
<ISU_DISCOUNT_OPERAND_VALUE>-DATE_TO = 1.
<ISU_DISCOUNT_OPERAND_VALUE>-SAISON = 1.
<ISU_DISCOUNT_OPERAND_VALUE>-MANDT = 1.
<ISU_DISCOUNT_OPERAND_VALUE>-RABZUS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISU_DISCOUNT_OPERAND_VALUE-SPARTE, sy-vline,
  WA_ISU_DISCOUNT_OPERAND_VALUE-RABTYP, sy-vline,
  WA_ISU_DISCOUNT_OPERAND_VALUE-BZGBASIS, sy-vline,
  WA_ISU_DISCOUNT_OPERAND_VALUE-USE_REGIST, sy-vline,
  WA_ISU_DISCOUNT_OPERAND_VALUE-RABART, sy-vline,
  WA_ISU_DISCOUNT_OPERAND_VALUE-MASS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISU_DISCOUNT_OPERAND_VALUE 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_ISU_DISCOUNT_OPERAND_VALUE 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_ISU_DISCOUNT_OPERAND_VALUE INTO WA_ISU_DISCOUNT_OPERAND_VALUE.


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

*Conversion exit CUNIT, internal->external for field MASS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ISU_DISCOUNT_OPERAND_VALUE-MASS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU_DISCOUNT_OPERAND_VALUE-MASS.
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_ISU_DISCOUNT_OPERAND_VALUE_STR, 
DATE_FROM TYPE STRING,
DATE_TO TYPE STRING,
SAISON TYPE STRING,
MANDT TYPE STRING,
RABZUS TYPE STRING,
SPARTE TYPE STRING,
RABTYP TYPE STRING,
BZGBASIS TYPE STRING,
USE_REGIST TYPE STRING,
RABART TYPE STRING,
MASS TYPE STRING,
TIMBASIS TYPE STRING,
TIMTYP TYPE STRING,
AKLASSE TYPE STRING,
ERDAT TYPE STRING,
ERNAM TYPE STRING,
AEDAT TYPE STRING,
AENAM TYPE STRING,
BEGRU TYPE STRING,
LOEVM TYPE STRING,
DISCOUNT_HISTORY TYPE STRING,
TARIFTYP TYPE STRING,
TARIFART TYPE STRING,
KONDIGR TYPE STRING,
TARIFNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISU_DISCOUNT_OPERAND_VALUE_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_ISU_DISCOUNT_OPERAND_VALUE_STR-DATE_FROM sy-vline 
WA_ISU_DISCOUNT_OPERAND_VALUE_STR-DATE_TO sy-vline 
WA_ISU_DISCOUNT_OPERAND_VALUE_STR-SAISON sy-vline 
WA_ISU_DISCOUNT_OPERAND_VALUE_STR-MANDT sy-vline 
WA_ISU_DISCOUNT_OPERAND_VALUE_STR-RABZUS sy-vline 
WA_ISU_DISCOUNT_OPERAND_VALUE_STR-SPARTE sy-vline 
WA_ISU_DISCOUNT_OPERAND_VALUE_STR-RABTYP sy-vline 
WA_ISU_DISCOUNT_OPERAND_VALUE_STR-BZGBASIS sy-vline 
WA_ISU_DISCOUNT_OPERAND_VALUE_STR-USE_REGIST sy-vline 
WA_ISU_DISCOUNT_OPERAND_VALUE_STR-RABART sy-vline 
WA_ISU_DISCOUNT_OPERAND_VALUE_STR-MASS sy-vline 
WA_ISU_DISCOUNT_OPERAND_VALUE_STR-TIMBASIS sy-vline 
WA_ISU_DISCOUNT_OPERAND_VALUE_STR-TIMTYP sy-vline 
WA_ISU_DISCOUNT_OPERAND_VALUE_STR-AKLASSE sy-vline 
WA_ISU_DISCOUNT_OPERAND_VALUE_STR-ERDAT sy-vline 
WA_ISU_DISCOUNT_OPERAND_VALUE_STR-ERNAM sy-vline 
WA_ISU_DISCOUNT_OPERAND_VALUE_STR-AEDAT sy-vline 
WA_ISU_DISCOUNT_OPERAND_VALUE_STR-AENAM sy-vline 
WA_ISU_DISCOUNT_OPERAND_VALUE_STR-BEGRU sy-vline 
WA_ISU_DISCOUNT_OPERAND_VALUE_STR-LOEVM sy-vline 
WA_ISU_DISCOUNT_OPERAND_VALUE_STR-DISCOUNT_HISTORY sy-vline 
WA_ISU_DISCOUNT_OPERAND_VALUE_STR-TARIFTYP sy-vline 
WA_ISU_DISCOUNT_OPERAND_VALUE_STR-TARIFART sy-vline 
WA_ISU_DISCOUNT_OPERAND_VALUE_STR-KONDIGR sy-vline 
WA_ISU_DISCOUNT_OPERAND_VALUE_STR-TARIFNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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