ABAP Select data from SAP table WB2B_TC_CREATE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP WB2B_TC_CREATE 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 WB2B_TC_CREATE. 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 WB2B_TC_CREATE 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_WB2B_TC_CREATE TYPE STANDARD TABLE OF WB2B_TC_CREATE,
      WA_WB2B_TC_CREATE TYPE WB2B_TC_CREATE,
      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: <WB2B_TC_CREATE> TYPE WB2B_TC_CREATE.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_WB2B_TC_CREATE.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM WB2B_TC_CREATE
  INTO TABLE IT_WB2B_TC_CREATE.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WB2B_TC_CREATE
*  INTO TABLE @DATA(IT_WB2B_TC_CREATE2).
*--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_WB2B_TC_CREATE INDEX 1 INTO DATA(WA_WB2B_TC_CREATE2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_WB2B_TC_CREATE ASSIGNING <WB2B_TC_CREATE>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WB2B_TC_CREATE>-TC_NUMBER = 1.
<WB2B_TC_CREATE>-LAST_CHANGED_FLAG = 1.
<WB2B_TC_CREATE>-DATE_CREATED = 1.
<WB2B_TC_CREATE>-TC_TITLE = 1.
<WB2B_TC_CREATE>-INTERNAL_STATUS = 1.

ENDLOOP.

LOOP AT IT_WB2B_TC_CREATE INTO WA_WB2B_TC_CREATE.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WB2B_TC_CREATE-UOM_1, sy-vline,
  WA_WB2B_TC_CREATE-CURR_1, sy-vline,
  WA_WB2B_TC_CREATE-DDATE_1, sy-vline,
  WA_WB2B_TC_CREATE-DDATE_2, sy-vline,
  WA_WB2B_TC_CREATE-DDATE_3, sy-vline,
  WA_WB2B_TC_CREATE-QTY_2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WB2B_TC_CREATE 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_WB2B_TC_CREATE 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_WB2B_TC_CREATE INTO WA_WB2B_TC_CREATE.


*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 TC_NUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2B_TC_CREATE-TC_NUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2B_TC_CREATE-TC_NUMBER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UOM_1
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WB2B_TC_CREATE-UOM_1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2B_TC_CREATE-UOM_1.
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_WB2B_TC_CREATE_STR, 
TC_NUMBER TYPE STRING,
LAST_CHANGED_FLAG TYPE STRING,
DATE_CREATED TYPE STRING,
TC_TITLE TYPE STRING,
INTERNAL_STATUS TYPE STRING,
UOM_1 TYPE STRING,
CURR_1 TYPE STRING,
DDATE_1 TYPE STRING,
DDATE_2 TYPE STRING,
DDATE_3 TYPE STRING,
QTY_2 TYPE STRING,
QTY_3 TYPE STRING,
QTY_1 TYPE STRING,
PRICE_1 TYPE STRING,
INCOV_1 TYPE STRING,
INCO_1 TYPE STRING,
AUTHOR TYPE STRING,
INCO_2 TYPE STRING,
SCR_PR TYPE STRING,
INCO2_L_ TYPE STRING,
INCO3_L TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WB2B_TC_CREATE_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_WB2B_TC_CREATE_STR-TC_NUMBER sy-vline 
WA_WB2B_TC_CREATE_STR-LAST_CHANGED_FLAG sy-vline 
WA_WB2B_TC_CREATE_STR-DATE_CREATED sy-vline 
WA_WB2B_TC_CREATE_STR-TC_TITLE sy-vline 
WA_WB2B_TC_CREATE_STR-INTERNAL_STATUS sy-vline 
WA_WB2B_TC_CREATE_STR-UOM_1 sy-vline 
WA_WB2B_TC_CREATE_STR-CURR_1 sy-vline 
WA_WB2B_TC_CREATE_STR-DDATE_1 sy-vline 
WA_WB2B_TC_CREATE_STR-DDATE_2 sy-vline 
WA_WB2B_TC_CREATE_STR-DDATE_3 sy-vline 
WA_WB2B_TC_CREATE_STR-QTY_2 sy-vline 
WA_WB2B_TC_CREATE_STR-QTY_3 sy-vline 
WA_WB2B_TC_CREATE_STR-QTY_1 sy-vline 
WA_WB2B_TC_CREATE_STR-PRICE_1 sy-vline 
WA_WB2B_TC_CREATE_STR-INCOV_1 sy-vline 
WA_WB2B_TC_CREATE_STR-INCO_1 sy-vline 
WA_WB2B_TC_CREATE_STR-AUTHOR sy-vline 
WA_WB2B_TC_CREATE_STR-INCO_2 sy-vline 
WA_WB2B_TC_CREATE_STR-SCR_PR sy-vline 
WA_WB2B_TC_CREATE_STR-INCO2_L_ sy-vline 
WA_WB2B_TC_CREATE_STR-INCO3_L sy-vline      INTO ld_text SEPARATED BY SPACE.

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