ABAP Select data from SAP table V_MPLA_T399W into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V_MPLA_T399W 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 V_MPLA_T399W. 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 V_MPLA_T399W 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_V_MPLA_T399W TYPE STANDARD TABLE OF V_MPLA_T399W,
      WA_V_MPLA_T399W TYPE V_MPLA_T399W,
      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: <V_MPLA_T399W> TYPE V_MPLA_T399W.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_V_MPLA_T399W.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM V_MPLA_T399W
  INTO TABLE IT_V_MPLA_T399W.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_MPLA_T399W
*  INTO TABLE @DATA(IT_V_MPLA_T399W2).
*--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_V_MPLA_T399W INDEX 1 INTO DATA(WA_V_MPLA_T399W2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_V_MPLA_T399W ASSIGNING <V_MPLA_T399W>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_MPLA_T399W>-MANDT = 1.
<V_MPLA_T399W>-WARPL = 1.
<V_MPLA_T399W>-ERKNZ = 1.
<V_MPLA_T399W>-ERSDT = 1.
<V_MPLA_T399W>-ERNAM = 1.

ENDLOOP.

LOOP AT IT_V_MPLA_T399W INTO WA_V_MPLA_T399W.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_MPLA_T399W-AEDAT, sy-vline,
  WA_V_MPLA_T399W-AENAM, sy-vline,
  WA_V_MPLA_T399W-WPTXT, sy-vline,
  WA_V_MPLA_T399W-STRAT, sy-vline,
  WA_V_MPLA_T399W-ABRHO, sy-vline,
  WA_V_MPLA_T399W-EQUNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_MPLA_T399W 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_V_MPLA_T399W 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_V_MPLA_T399W INTO WA_V_MPLA_T399W.


*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 WARPL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_MPLA_T399W-WARPL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_MPLA_T399W-WARPL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EQUNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_MPLA_T399W-EQUNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_MPLA_T399W-EQUNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TPLNR, internal->external for field TPLNR
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_V_MPLA_T399W-TPLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_MPLA_T399W-TPLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_MPLA_T399W-KUNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_MPLA_T399W-KUNUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_V_MPLA_T399W-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_MPLA_T399W-LANGU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field HUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_V_MPLA_T399W-HUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_MPLA_T399W-HUNIT.
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_V_MPLA_T399W_STR, 
MANDT TYPE STRING,
WARPL TYPE STRING,
ERKNZ TYPE STRING,
ERSDT TYPE STRING,
ERNAM TYPE STRING,
AEDAT TYPE STRING,
AENAM TYPE STRING,
WPTXT TYPE STRING,
STRAT TYPE STRING,
ABRHO TYPE STRING,
EQUNR TYPE STRING,
TPLNR TYPE STRING,
KUNUM TYPE STRING,
LTKNZ TYPE STRING,
LVORM TYPE STRING,
ANZPS TYPE STRING,
ABNUM TYPE STRING,
LANGU TYPE STRING,
VSPOS TYPE STRING,
VSNEG TYPE STRING,
TOPOS TYPE STRING,
TONEG TYPE STRING,
SFAKT TYPE STRING,
STICH TYPE STRING,
TGOON TYPE STRING,
HORIZ TYPE STRING,
ANDOR TYPE STRING,
KNAUT TYPE STRING,
BEGRU TYPE STRING,
OBJNR TYPE STRING,
MPTYP TYPE STRING,
HUNIT TYPE STRING,
STADT TYPE STRING,
SZAEH TYPE STRING,
CALL_CONFIRM TYPE STRING,
PLAN_SORT TYPE STRING,
FABKL TYPE STRING,
PUFFP TYPE STRING,
PUFFN TYPE STRING,
CALL_TYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_MPLA_T399W_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_V_MPLA_T399W_STR-MANDT sy-vline 
WA_V_MPLA_T399W_STR-WARPL sy-vline 
WA_V_MPLA_T399W_STR-ERKNZ sy-vline 
WA_V_MPLA_T399W_STR-ERSDT sy-vline 
WA_V_MPLA_T399W_STR-ERNAM sy-vline 
WA_V_MPLA_T399W_STR-AEDAT sy-vline 
WA_V_MPLA_T399W_STR-AENAM sy-vline 
WA_V_MPLA_T399W_STR-WPTXT sy-vline 
WA_V_MPLA_T399W_STR-STRAT sy-vline 
WA_V_MPLA_T399W_STR-ABRHO sy-vline 
WA_V_MPLA_T399W_STR-EQUNR sy-vline 
WA_V_MPLA_T399W_STR-TPLNR sy-vline 
WA_V_MPLA_T399W_STR-KUNUM sy-vline 
WA_V_MPLA_T399W_STR-LTKNZ sy-vline 
WA_V_MPLA_T399W_STR-LVORM sy-vline 
WA_V_MPLA_T399W_STR-ANZPS sy-vline 
WA_V_MPLA_T399W_STR-ABNUM sy-vline 
WA_V_MPLA_T399W_STR-LANGU sy-vline 
WA_V_MPLA_T399W_STR-VSPOS sy-vline 
WA_V_MPLA_T399W_STR-VSNEG sy-vline 
WA_V_MPLA_T399W_STR-TOPOS sy-vline 
WA_V_MPLA_T399W_STR-TONEG sy-vline 
WA_V_MPLA_T399W_STR-SFAKT sy-vline 
WA_V_MPLA_T399W_STR-STICH sy-vline 
WA_V_MPLA_T399W_STR-TGOON sy-vline 
WA_V_MPLA_T399W_STR-HORIZ sy-vline 
WA_V_MPLA_T399W_STR-ANDOR sy-vline 
WA_V_MPLA_T399W_STR-KNAUT sy-vline 
WA_V_MPLA_T399W_STR-BEGRU sy-vline 
WA_V_MPLA_T399W_STR-OBJNR sy-vline 
WA_V_MPLA_T399W_STR-MPTYP sy-vline 
WA_V_MPLA_T399W_STR-HUNIT sy-vline 
WA_V_MPLA_T399W_STR-STADT sy-vline 
WA_V_MPLA_T399W_STR-SZAEH sy-vline 
WA_V_MPLA_T399W_STR-CALL_CONFIRM sy-vline 
WA_V_MPLA_T399W_STR-PLAN_SORT sy-vline 
WA_V_MPLA_T399W_STR-FABKL sy-vline 
WA_V_MPLA_T399W_STR-PUFFP sy-vline 
WA_V_MPLA_T399W_STR-PUFFN sy-vline 
WA_V_MPLA_T399W_STR-CALL_TYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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