ABAP Select data from SAP table WCB_TRAD_PROMO_HEAD_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_HEAD_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_HEAD_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_HEAD_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_HEAD_STY TYPE STANDARD TABLE OF WCB_TRAD_PROMO_HEAD_STY,
      WA_WCB_TRAD_PROMO_HEAD_STY TYPE WCB_TRAD_PROMO_HEAD_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_HEAD_STY> TYPE WCB_TRAD_PROMO_HEAD_STY.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WCB_TRAD_PROMO_HEAD_STY
*  INTO TABLE @DATA(IT_WCB_TRAD_PROMO_HEAD_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_HEAD_STY INDEX 1 INTO DATA(WA_WCB_TRAD_PROMO_HEAD_STY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WCB_TRAD_PROMO_HEAD_STY>-CONTRACT_TYPE = 1.
<WCB_TRAD_PROMO_HEAD_STY>-CUSTOMER_OWNER = 1.
<WCB_TRAD_PROMO_HEAD_STY>-REFERENCE = 1.
<WCB_TRAD_PROMO_HEAD_STY>-ASSIGNMENT = 1.
<WCB_TRAD_PROMO_HEAD_STY>-EXTERNAL_PARTNER = 1.

ENDLOOP.

LOOP AT IT_WCB_TRAD_PROMO_HEAD_STY INTO WA_WCB_TRAD_PROMO_HEAD_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_HEAD_STY-SALESORG, sy-vline,
  WA_WCB_TRAD_PROMO_HEAD_STY-DISTR_CHAN, sy-vline,
  WA_WCB_TRAD_PROMO_HEAD_STY-DIVISION, sy-vline,
  WA_WCB_TRAD_PROMO_HEAD_STY-PMNTTRMS, sy-vline,
  WA_WCB_TRAD_PROMO_HEAD_STY-DSCNT3_TO, sy-vline,
  WA_WCB_TRAD_PROMO_HEAD_STY-DSCT_PCT1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WCB_TRAD_PROMO_HEAD_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_HEAD_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_HEAD_STY INTO WA_WCB_TRAD_PROMO_HEAD_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 ALPHA, internal->external for field CUSTOMER_OWNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WCB_TRAD_PROMO_HEAD_STY-CUSTOMER_OWNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WCB_TRAD_PROMO_HEAD_STY-CUSTOMER_OWNER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN5, internal->external for field SETTL_MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN5_OUTPUT'
  EXPORTING
    input =                      WA_WCB_TRAD_PROMO_HEAD_STY-SETTL_MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WCB_TRAD_PROMO_HEAD_STY-SETTL_MATERIAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRED_CONDITION_CONTRACT_NUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WCB_TRAD_PROMO_HEAD_STY-PRED_CONDITION_CONTRACT_NUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WCB_TRAD_PROMO_HEAD_STY-PRED_CONDITION_CONTRACT_NUMBER.
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_HEAD_STY_STR, 
CONTRACT_TYPE TYPE STRING,
CUSTOMER_OWNER TYPE STRING,
REFERENCE TYPE STRING,
ASSIGNMENT TYPE STRING,
EXTERNAL_PARTNER TYPE STRING,
SALESORG TYPE STRING,
DISTR_CHAN TYPE STRING,
DIVISION TYPE STRING,
PMNTTRMS TYPE STRING,
DSCNT3_TO TYPE STRING,
DSCT_PCT1 TYPE STRING,
DSCT_DAYS2 TYPE STRING,
DSCT_PCT2 TYPE STRING,
NETTERMS TYPE STRING,
PYMT_METH TYPE STRING,
DEACTIVATED TYPE STRING,
VALIDITY_DATE_FROM TYPE STRING,
VALIDITY_DATE_TO TYPE STRING,
TESTRUN TYPE STRING,
CONDITION_CONTRACT_EXTERNALNUM TYPE STRING,
COND_CONTRACT_CURRENCY TYPE STRING,
COND_CONTRACT_CURRENCY_ISO TYPE STRING,
TRANS_DATE TYPE STRING,
ACCESS_TYPE TYPE STRING,
SETTL_MATERIAL TYPE STRING,
SETTL_CAL_FINAL TYPE STRING,
SETTL_CAL_PARTIAL TYPE STRING,
COMP_CODE TYPE STRING,
SETTL_TYPE_CUSTOMER TYPE STRING,
EXTENSION_CALENDAR TYPE STRING,
PRED_CONDITION_CONTRACT_NUMBER TYPE STRING,
CONDITION_CONTRACT_PURPOSE TYPE STRING,
CONDITION_CONTRACT_EXTERNALCAT TYPE STRING,
SETTL_CAL_DELTA TYPE STRING,
EXTERNAL_GUID TYPE STRING,
SETTL_CAL_ACCR TYPE STRING,
OPTIMIZE TYPE STRING,
ACTION_CODE TYPE STRING,
LOCK_SETTLE TYPE STRING,
LCK_UNLCK_COCO TYPE STRING,
COND_KEYS TYPE STRING,
BVBDATA TYPE STRING,
EXTENSIONS TYPE STRING,
TXTDATA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WCB_TRAD_PROMO_HEAD_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_HEAD_STY_STR-CONTRACT_TYPE sy-vline 
WA_WCB_TRAD_PROMO_HEAD_STY_STR-CUSTOMER_OWNER sy-vline 
WA_WCB_TRAD_PROMO_HEAD_STY_STR-REFERENCE sy-vline 
WA_WCB_TRAD_PROMO_HEAD_STY_STR-ASSIGNMENT sy-vline 
WA_WCB_TRAD_PROMO_HEAD_STY_STR-EXTERNAL_PARTNER sy-vline 
WA_WCB_TRAD_PROMO_HEAD_STY_STR-SALESORG sy-vline 
WA_WCB_TRAD_PROMO_HEAD_STY_STR-DISTR_CHAN sy-vline 
WA_WCB_TRAD_PROMO_HEAD_STY_STR-DIVISION sy-vline 
WA_WCB_TRAD_PROMO_HEAD_STY_STR-PMNTTRMS sy-vline 
WA_WCB_TRAD_PROMO_HEAD_STY_STR-DSCNT3_TO sy-vline 
WA_WCB_TRAD_PROMO_HEAD_STY_STR-DSCT_PCT1 sy-vline 
WA_WCB_TRAD_PROMO_HEAD_STY_STR-DSCT_DAYS2 sy-vline 
WA_WCB_TRAD_PROMO_HEAD_STY_STR-DSCT_PCT2 sy-vline 
WA_WCB_TRAD_PROMO_HEAD_STY_STR-NETTERMS sy-vline 
WA_WCB_TRAD_PROMO_HEAD_STY_STR-PYMT_METH sy-vline 
WA_WCB_TRAD_PROMO_HEAD_STY_STR-DEACTIVATED sy-vline 
WA_WCB_TRAD_PROMO_HEAD_STY_STR-VALIDITY_DATE_FROM sy-vline 
WA_WCB_TRAD_PROMO_HEAD_STY_STR-VALIDITY_DATE_TO sy-vline 
WA_WCB_TRAD_PROMO_HEAD_STY_STR-TESTRUN sy-vline 
WA_WCB_TRAD_PROMO_HEAD_STY_STR-CONDITION_CONTRACT_EXTERNALNUM sy-vline 
WA_WCB_TRAD_PROMO_HEAD_STY_STR-COND_CONTRACT_CURRENCY sy-vline 
WA_WCB_TRAD_PROMO_HEAD_STY_STR-COND_CONTRACT_CURRENCY_ISO sy-vline 
WA_WCB_TRAD_PROMO_HEAD_STY_STR-TRANS_DATE sy-vline 
WA_WCB_TRAD_PROMO_HEAD_STY_STR-ACCESS_TYPE sy-vline 
WA_WCB_TRAD_PROMO_HEAD_STY_STR-SETTL_MATERIAL sy-vline 
WA_WCB_TRAD_PROMO_HEAD_STY_STR-SETTL_CAL_FINAL sy-vline 
WA_WCB_TRAD_PROMO_HEAD_STY_STR-SETTL_CAL_PARTIAL sy-vline 
WA_WCB_TRAD_PROMO_HEAD_STY_STR-COMP_CODE sy-vline 
WA_WCB_TRAD_PROMO_HEAD_STY_STR-SETTL_TYPE_CUSTOMER sy-vline 
WA_WCB_TRAD_PROMO_HEAD_STY_STR-EXTENSION_CALENDAR sy-vline 
WA_WCB_TRAD_PROMO_HEAD_STY_STR-PRED_CONDITION_CONTRACT_NUMBER sy-vline 
WA_WCB_TRAD_PROMO_HEAD_STY_STR-CONDITION_CONTRACT_PURPOSE sy-vline 
WA_WCB_TRAD_PROMO_HEAD_STY_STR-CONDITION_CONTRACT_EXTERNALCAT sy-vline 
WA_WCB_TRAD_PROMO_HEAD_STY_STR-SETTL_CAL_DELTA sy-vline 
WA_WCB_TRAD_PROMO_HEAD_STY_STR-EXTERNAL_GUID sy-vline 
WA_WCB_TRAD_PROMO_HEAD_STY_STR-SETTL_CAL_ACCR sy-vline 
WA_WCB_TRAD_PROMO_HEAD_STY_STR-OPTIMIZE sy-vline 
WA_WCB_TRAD_PROMO_HEAD_STY_STR-ACTION_CODE sy-vline 
WA_WCB_TRAD_PROMO_HEAD_STY_STR-LOCK_SETTLE sy-vline 
WA_WCB_TRAD_PROMO_HEAD_STY_STR-LCK_UNLCK_COCO sy-vline 
WA_WCB_TRAD_PROMO_HEAD_STY_STR-COND_KEYS sy-vline 
WA_WCB_TRAD_PROMO_HEAD_STY_STR-BVBDATA sy-vline 
WA_WCB_TRAD_PROMO_HEAD_STY_STR-EXTENSIONS sy-vline 
WA_WCB_TRAD_PROMO_HEAD_STY_STR-TXTDATA sy-vline      INTO ld_text SEPARATED BY SPACE.

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