ABAP Select data from SAP table T606WVB into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T606WVB 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 T606WVB. 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 T606WVB 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_T606WVB TYPE STANDARD TABLE OF T606WVB,
      WA_T606WVB TYPE T606WVB,
      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: <T606WVB> TYPE T606WVB.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T606WVB.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T606WVB
  INTO TABLE IT_T606WVB.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T606WVB
*  INTO TABLE @DATA(IT_T606WVB2).
*--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_T606WVB INDEX 1 INTO DATA(WA_T606WVB2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T606WVB ASSIGNING <T606WVB>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T606WVB>-MANDT = 1.
<T606WVB>-GEGRU = 1.
<T606WVB>-GEART = 1.
<T606WVB>-MATNR = 1.
<T606WVB>-GENNR = 1.

ENDLOOP.

LOOP AT IT_T606WVB INTO WA_T606WVB.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T606WVB-UPDKZ, sy-vline,
  WA_T606WVB-MAKTX, sy-vline,
  WA_T606WVB-LOCKD, sy-vline,
  WA_T606WVB-IKONE, sy-vline,
  WA_T606WVB-TCSELFLAG, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_T606WVB 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_T606WVB 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_T606WVB INTO WA_T606WVB.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_T606WVB-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T606WVB-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GENNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T606WVB-GENNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T606WVB-GENNR.
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_T606WVB_STR, 
MANDT TYPE STRING,
GEGRU TYPE STRING,
GEART TYPE STRING,
MATNR TYPE STRING,
GENNR TYPE STRING,
UPDKZ TYPE STRING,
MAKTX TYPE STRING,
LOCKD TYPE STRING,
IKONE TYPE STRING,
TCSELFLAG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T606WVB_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_T606WVB_STR-MANDT sy-vline 
WA_T606WVB_STR-GEGRU sy-vline 
WA_T606WVB_STR-GEART sy-vline 
WA_T606WVB_STR-MATNR sy-vline 
WA_T606WVB_STR-GENNR sy-vline 
WA_T606WVB_STR-UPDKZ sy-vline 
WA_T606WVB_STR-MAKTX sy-vline 
WA_T606WVB_STR-LOCKD sy-vline 
WA_T606WVB_STR-IKONE sy-vline 
WA_T606WVB_STR-TCSELFLAG sy-vline      INTO ld_text SEPARATED BY SPACE.

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