ABAP Select data from SAP table MILL_PBWU_VB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MILL_PBWU_VB
*  INTO TABLE @DATA(IT_MILL_PBWU_VB2).
*--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_MILL_PBWU_VB INDEX 1 INTO DATA(WA_MILL_PBWU_VB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MILL_PBWU_VB>-MANDT = 1.
<MILL_PBWU_VB>-AUFNR = 1.
<MILL_PBWU_VB>-POSNR = 1.
<MILL_PBWU_VB>-MATNR = 1.
<MILL_PBWU_VB>-CHARG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MILL_PBWU_VB-PCLVL, sy-vline,
  WA_MILL_PBWU_VB-AUFNR_PRE, sy-vline,
  WA_MILL_PBWU_VB-POSNR_PRE, sy-vline,
  WA_MILL_PBWU_VB-MATNR_PRE, sy-vline,
  WA_MILL_PBWU_VB-CHARG_PRE, sy-vline,
  WA_MILL_PBWU_VB-PCLVL_PRE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MILL_PBWU_VB 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_MILL_PBWU_VB 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_MILL_PBWU_VB INTO WA_MILL_PBWU_VB.


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

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

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

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

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

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

*Conversion exit GJAHR, internal->external for field MJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_MILL_PBWU_VB-MJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MILL_PBWU_VB-MJAHR.
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_MILL_PBWU_VB_STR, 
MANDT TYPE STRING,
AUFNR TYPE STRING,
POSNR TYPE STRING,
MATNR TYPE STRING,
CHARG TYPE STRING,
PCLVL TYPE STRING,
AUFNR_PRE TYPE STRING,
POSNR_PRE TYPE STRING,
MATNR_PRE TYPE STRING,
CHARG_PRE TYPE STRING,
PCLVL_PRE TYPE STRING,
BTYPE TYPE STRING,
FLGUC TYPE STRING,
FLGPPC TYPE STRING,
FLGFC TYPE STRING,
WERKS TYPE STRING,
UMATNR TYPE STRING,
UCHARG TYPE STRING,
FLGGR TYPE STRING,
MBLNR TYPE STRING,
MJAHR TYPE STRING,
ZEILE TYPE STRING,
UPD_FLG TYPE STRING,
LOEVM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MILL_PBWU_VB_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_MILL_PBWU_VB_STR-MANDT sy-vline 
WA_MILL_PBWU_VB_STR-AUFNR sy-vline 
WA_MILL_PBWU_VB_STR-POSNR sy-vline 
WA_MILL_PBWU_VB_STR-MATNR sy-vline 
WA_MILL_PBWU_VB_STR-CHARG sy-vline 
WA_MILL_PBWU_VB_STR-PCLVL sy-vline 
WA_MILL_PBWU_VB_STR-AUFNR_PRE sy-vline 
WA_MILL_PBWU_VB_STR-POSNR_PRE sy-vline 
WA_MILL_PBWU_VB_STR-MATNR_PRE sy-vline 
WA_MILL_PBWU_VB_STR-CHARG_PRE sy-vline 
WA_MILL_PBWU_VB_STR-PCLVL_PRE sy-vline 
WA_MILL_PBWU_VB_STR-BTYPE sy-vline 
WA_MILL_PBWU_VB_STR-FLGUC sy-vline 
WA_MILL_PBWU_VB_STR-FLGPPC sy-vline 
WA_MILL_PBWU_VB_STR-FLGFC sy-vline 
WA_MILL_PBWU_VB_STR-WERKS sy-vline 
WA_MILL_PBWU_VB_STR-UMATNR sy-vline 
WA_MILL_PBWU_VB_STR-UCHARG sy-vline 
WA_MILL_PBWU_VB_STR-FLGGR sy-vline 
WA_MILL_PBWU_VB_STR-MBLNR sy-vline 
WA_MILL_PBWU_VB_STR-MJAHR sy-vline 
WA_MILL_PBWU_VB_STR-ZEILE sy-vline 
WA_MILL_PBWU_VB_STR-UPD_FLG sy-vline 
WA_MILL_PBWU_VB_STR-LOEVM sy-vline      INTO ld_text SEPARATED BY SPACE.

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