ABAP Select data from SAP table MGV_QPRN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MGV_QPRN
*  INTO TABLE @DATA(IT_MGV_QPRN2).
*--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_MGV_QPRN INDEX 1 INTO DATA(WA_MGV_QPRN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MGV_QPRN>-MANDT = 1.
<MGV_QPRN>-PN_NR = 1.
<MGV_QPRN>-PLOS = 1.
<MGV_QPRN>-MATNR = 1.
<MGV_QPRN>-WERKS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MGV_QPRN-REVLV, sy-vline,
  WA_MGV_QPRN-CHARG, sy-vline,
  WA_MGV_QPRN-KUNNR, sy-vline,
  WA_MGV_QPRN-LIFNR, sy-vline,
  WA_MGV_QPRN-HRSTL, sy-vline,
  WA_MGV_QPRN-MBLNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MGV_QPRN 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_MGV_QPRN 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_MGV_QPRN INTO WA_MGV_QPRN.


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

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

*Conversion exit NUMCV, internal->external for field REVLV
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_MGV_QPRN-REVLV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MGV_QPRN-REVLV.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit GJAHR, internal->external for field MJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_MGV_QPRN-MJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MGV_QPRN-MJAHR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit MATNL, internal->external for field MATNR_EXT
CALL FUNCTION 'CONVERSION_EXIT_MATNL_OUTPUT'
  EXPORTING
    input =                      WA_MGV_QPRN-MATNR_EXT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MGV_QPRN-MATNR_EXT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATNW, internal->external for field MATNR_VERS
CALL FUNCTION 'CONVERSION_EXIT_MATNW_OUTPUT'
  EXPORTING
    input =                      WA_MGV_QPRN-MATNR_VERS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MGV_QPRN-MATNR_VERS.
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_MGV_QPRN_STR, 
MANDT TYPE STRING,
PN_NR TYPE STRING,
PLOS TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
REVLV TYPE STRING,
CHARG TYPE STRING,
KUNNR TYPE STRING,
LIFNR TYPE STRING,
HRSTL TYPE STRING,
MBLNR TYPE STRING,
ZEILE TYPE STRING,
MJAHR TYPE STRING,
AUFNR TYPE STRING,
VERID TYPE STRING,
SA_AUFNR TYPE STRING,
ANLNA TYPE STRING,
ANLDT TYPE STRING,
ANLZT TYPE STRING,
QMATAUTH TYPE STRING,
KZQUIT TYPE STRING,
SIG_IL_SDR TYPE STRING,
FRGNA TYPE STRING,
FRGDT TYPE STRING,
FRGZT TYPE STRING,
PZTXT TYPE STRING,
QMNUM TYPE STRING,
MATNR_EXT TYPE STRING,
MATNR_VERS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MGV_QPRN_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_MGV_QPRN_STR-MANDT sy-vline 
WA_MGV_QPRN_STR-PN_NR sy-vline 
WA_MGV_QPRN_STR-PLOS sy-vline 
WA_MGV_QPRN_STR-MATNR sy-vline 
WA_MGV_QPRN_STR-WERKS sy-vline 
WA_MGV_QPRN_STR-REVLV sy-vline 
WA_MGV_QPRN_STR-CHARG sy-vline 
WA_MGV_QPRN_STR-KUNNR sy-vline 
WA_MGV_QPRN_STR-LIFNR sy-vline 
WA_MGV_QPRN_STR-HRSTL sy-vline 
WA_MGV_QPRN_STR-MBLNR sy-vline 
WA_MGV_QPRN_STR-ZEILE sy-vline 
WA_MGV_QPRN_STR-MJAHR sy-vline 
WA_MGV_QPRN_STR-AUFNR sy-vline 
WA_MGV_QPRN_STR-VERID sy-vline 
WA_MGV_QPRN_STR-SA_AUFNR sy-vline 
WA_MGV_QPRN_STR-ANLNA sy-vline 
WA_MGV_QPRN_STR-ANLDT sy-vline 
WA_MGV_QPRN_STR-ANLZT sy-vline 
WA_MGV_QPRN_STR-QMATAUTH sy-vline 
WA_MGV_QPRN_STR-KZQUIT sy-vline 
WA_MGV_QPRN_STR-SIG_IL_SDR sy-vline 
WA_MGV_QPRN_STR-FRGNA sy-vline 
WA_MGV_QPRN_STR-FRGDT sy-vline 
WA_MGV_QPRN_STR-FRGZT sy-vline 
WA_MGV_QPRN_STR-PZTXT sy-vline 
WA_MGV_QPRN_STR-QMNUM sy-vline 
WA_MGV_QPRN_STR-MATNR_EXT sy-vline 
WA_MGV_QPRN_STR-MATNR_VERS sy-vline      INTO ld_text SEPARATED BY SPACE.

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