ABAP Select data from SAP table WCB_TRAD_PROMO_COND_ITEM_STY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WCB_TRAD_PROMO_COND_ITEM_STY
*  INTO TABLE @DATA(IT_WCB_TRAD_PROMO_COND_ITEM_STY2).
*--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_WCB_TRAD_PROMO_COND_ITEM_STY INDEX 1 INTO DATA(WA_WCB_TRAD_PROMO_COND_ITEM_STY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WCB_TRAD_PROMO_COND_ITEM_STY>-ORDER_KEY = 1.
<WCB_TRAD_PROMO_COND_ITEM_STY>-COND_COUNT = 1.
<WCB_TRAD_PROMO_COND_ITEM_STY>-CALC_TYPE = 1.
<WCB_TRAD_PROMO_COND_ITEM_STY>-AMOUNT = 1.
<WCB_TRAD_PROMO_COND_ITEM_STY>-CONDCURR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WCB_TRAD_PROMO_COND_ITEM_STY-CONDCURR_ISO, sy-vline,
  WA_WCB_TRAD_PROMO_COND_ITEM_STY-COND_P_UNT, sy-vline,
  WA_WCB_TRAD_PROMO_COND_ITEM_STY-COND_UNIT, sy-vline,
  WA_WCB_TRAD_PROMO_COND_ITEM_STY-COND_UNIT_ISO, sy-vline,
  WA_WCB_TRAD_PROMO_COND_ITEM_STY-TAX_CODE, sy-vline,
  WA_WCB_TRAD_PROMO_COND_ITEM_STY-W_TAX_CODE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WCB_TRAD_PROMO_COND_ITEM_STY 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_WCB_TRAD_PROMO_COND_ITEM_STY 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_WCB_TRAD_PROMO_COND_ITEM_STY INTO WA_WCB_TRAD_PROMO_COND_ITEM_STY.


*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 CUNIT, internal->external for field COND_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WCB_TRAD_PROMO_COND_ITEM_STY-COND_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WCB_TRAD_PROMO_COND_ITEM_STY-COND_UNIT.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field SCALE_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WCB_TRAD_PROMO_COND_ITEM_STY-SCALE_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WCB_TRAD_PROMO_COND_ITEM_STY-SCALE_UNIT.
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_WCB_TRAD_PROMO_COND_ITEM_STY_STR, 
ORDER_KEY TYPE STRING,
COND_COUNT TYPE STRING,
CALC_TYPE TYPE STRING,
AMOUNT TYPE STRING,
CONDCURR TYPE STRING,
CONDCURR_ISO TYPE STRING,
COND_P_UNT TYPE STRING,
COND_UNIT TYPE STRING,
COND_UNIT_ISO TYPE STRING,
TAX_CODE TYPE STRING,
W_TAX_CODE TYPE STRING,
EXCLUSION TYPE STRING,
PMNTTRMS TYPE STRING,
FIX_VAL_DY TYPE STRING,
COND_TYPE TYPE STRING,
CUSTOMER TYPE STRING,
NUMBORDERS TYPE STRING,
MAXCONBAVA TYPE STRING,
MAXCONVAL TYPE STRING,
CONDCURR_CUM TYPE STRING,
CONDCURR_CUM_ISO TYPE STRING,
SCALECURR TYPE STRING,
SCALECURR_ISO TYPE STRING,
SCALE_UNIT TYPE STRING,
SCALE_UNIT_ISO TYPE STRING,
CONVNUMERATOR TYPE STRING,
CONVDENOMINATOR TYPE STRING,
SCALEBASIS TYPE STRING,
SCALETYPE TYPE STRING,
ADD_VAL_DY TYPE STRING,
REFERENCE TYPE STRING,
COND_SCALES TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WCB_TRAD_PROMO_COND_ITEM_STY_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_WCB_TRAD_PROMO_COND_ITEM_STY_STR-ORDER_KEY sy-vline 
WA_WCB_TRAD_PROMO_COND_ITEM_STY_STR-COND_COUNT sy-vline 
WA_WCB_TRAD_PROMO_COND_ITEM_STY_STR-CALC_TYPE sy-vline 
WA_WCB_TRAD_PROMO_COND_ITEM_STY_STR-AMOUNT sy-vline 
WA_WCB_TRAD_PROMO_COND_ITEM_STY_STR-CONDCURR sy-vline 
WA_WCB_TRAD_PROMO_COND_ITEM_STY_STR-CONDCURR_ISO sy-vline 
WA_WCB_TRAD_PROMO_COND_ITEM_STY_STR-COND_P_UNT sy-vline 
WA_WCB_TRAD_PROMO_COND_ITEM_STY_STR-COND_UNIT sy-vline 
WA_WCB_TRAD_PROMO_COND_ITEM_STY_STR-COND_UNIT_ISO sy-vline 
WA_WCB_TRAD_PROMO_COND_ITEM_STY_STR-TAX_CODE sy-vline 
WA_WCB_TRAD_PROMO_COND_ITEM_STY_STR-W_TAX_CODE sy-vline 
WA_WCB_TRAD_PROMO_COND_ITEM_STY_STR-EXCLUSION sy-vline 
WA_WCB_TRAD_PROMO_COND_ITEM_STY_STR-PMNTTRMS sy-vline 
WA_WCB_TRAD_PROMO_COND_ITEM_STY_STR-FIX_VAL_DY sy-vline 
WA_WCB_TRAD_PROMO_COND_ITEM_STY_STR-COND_TYPE sy-vline 
WA_WCB_TRAD_PROMO_COND_ITEM_STY_STR-CUSTOMER sy-vline 
WA_WCB_TRAD_PROMO_COND_ITEM_STY_STR-NUMBORDERS sy-vline 
WA_WCB_TRAD_PROMO_COND_ITEM_STY_STR-MAXCONBAVA sy-vline 
WA_WCB_TRAD_PROMO_COND_ITEM_STY_STR-MAXCONVAL sy-vline 
WA_WCB_TRAD_PROMO_COND_ITEM_STY_STR-CONDCURR_CUM sy-vline 
WA_WCB_TRAD_PROMO_COND_ITEM_STY_STR-CONDCURR_CUM_ISO sy-vline 
WA_WCB_TRAD_PROMO_COND_ITEM_STY_STR-SCALECURR sy-vline 
WA_WCB_TRAD_PROMO_COND_ITEM_STY_STR-SCALECURR_ISO sy-vline 
WA_WCB_TRAD_PROMO_COND_ITEM_STY_STR-SCALE_UNIT sy-vline 
WA_WCB_TRAD_PROMO_COND_ITEM_STY_STR-SCALE_UNIT_ISO sy-vline 
WA_WCB_TRAD_PROMO_COND_ITEM_STY_STR-CONVNUMERATOR sy-vline 
WA_WCB_TRAD_PROMO_COND_ITEM_STY_STR-CONVDENOMINATOR sy-vline 
WA_WCB_TRAD_PROMO_COND_ITEM_STY_STR-SCALEBASIS sy-vline 
WA_WCB_TRAD_PROMO_COND_ITEM_STY_STR-SCALETYPE sy-vline 
WA_WCB_TRAD_PROMO_COND_ITEM_STY_STR-ADD_VAL_DY sy-vline 
WA_WCB_TRAD_PROMO_COND_ITEM_STY_STR-REFERENCE sy-vline 
WA_WCB_TRAD_PROMO_COND_ITEM_STY_STR-COND_SCALES sy-vline      INTO ld_text SEPARATED BY SPACE.

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