ABAP Select data from SAP table MGV_QBEW into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MGV_QBEW 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_QBEW. 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_QBEW 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_QBEW TYPE STANDARD TABLE OF MGV_QBEW,
      WA_MGV_QBEW TYPE MGV_QBEW,
      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_QBEW> TYPE MGV_QBEW.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MGV_QBEW
*  INTO TABLE @DATA(IT_MGV_QBEW2).
*--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_QBEW INDEX 1 INTO DATA(WA_MGV_QBEW2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MGV_QBEW>-MANDT = 1.
<MGV_QBEW>-MATNR = 1.
<MGV_QBEW>-BWKEY = 1.
<MGV_QBEW>-BWTAR = 1.
<MGV_QBEW>-SOBKZ = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MGV_QBEW-PSPNR, sy-vline,
  WA_MGV_QBEW-LBKUM, sy-vline,
  WA_MGV_QBEW-SALK3, sy-vline,
  WA_MGV_QBEW-VPRSV, sy-vline,
  WA_MGV_QBEW-VERPR, sy-vline,
  WA_MGV_QBEW-STPRS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MGV_QBEW 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_QBEW 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_QBEW INTO WA_MGV_QBEW.


*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_MGV_QBEW-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MGV_QBEW-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field PSPNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_MGV_QBEW-PSPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MGV_QBEW-PSPNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit MATNL, internal->external for field MATNR_EXT
CALL FUNCTION 'CONVERSION_EXIT_MATNL_OUTPUT'
  EXPORTING
    input =                      WA_MGV_QBEW-MATNR_EXT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MGV_QBEW-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_QBEW-MATNR_VERS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MGV_QBEW-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_QBEW_STR, 
MANDT TYPE STRING,
MATNR TYPE STRING,
BWKEY TYPE STRING,
BWTAR TYPE STRING,
SOBKZ TYPE STRING,
PSPNR TYPE STRING,
LBKUM TYPE STRING,
SALK3 TYPE STRING,
VPRSV TYPE STRING,
VERPR TYPE STRING,
STPRS TYPE STRING,
PEINH TYPE STRING,
BKLAS TYPE STRING,
SALKV TYPE STRING,
VMKUM TYPE STRING,
VMSAL TYPE STRING,
VMVPR TYPE STRING,
VMVER TYPE STRING,
VMSTP TYPE STRING,
VMPEI TYPE STRING,
VMBKL TYPE STRING,
VMSAV TYPE STRING,
VJKUM TYPE STRING,
VJSAL TYPE STRING,
VJVPR TYPE STRING,
VJVER TYPE STRING,
VJSTP TYPE STRING,
VJPEI TYPE STRING,
VJBKL TYPE STRING,
VJSAV TYPE STRING,
LFGJA TYPE STRING,
LFMON TYPE STRING,
BWTTY TYPE STRING,
STPRV TYPE STRING,
LAEPR TYPE STRING,
ZKPRS TYPE STRING,
ZKDAT TYPE STRING,
TIMESTAMP TYPE STRING,
ZPLPR TYPE STRING,
KALKZ TYPE STRING,
KALKL TYPE STRING,
KALKV TYPE STRING,
KALN1 TYPE STRING,
BWVA1 TYPE STRING,
BWVA2 TYPE STRING,
BWVA3 TYPE STRING,
VERS1 TYPE STRING,
VERS2 TYPE STRING,
VERS3 TYPE STRING,
HRKFT TYPE STRING,
KOSGR TYPE STRING,
PPRDZ TYPE STRING,
PPRDL TYPE STRING,
PPRDV TYPE STRING,
PDATZ TYPE STRING,
PDATL TYPE STRING,
PDATV TYPE STRING,
EKALR TYPE STRING,
VPLPR TYPE STRING,
MLMAA TYPE STRING,
MLAST TYPE STRING,
LPLPR TYPE STRING,
VKSAL TYPE STRING,
HKMAT TYPE STRING,
BWSPA TYPE STRING,
LPLPX TYPE STRING,
VPLPX TYPE STRING,
FPLPX TYPE STRING,
LBWST TYPE STRING,
VBWST TYPE STRING,
FBWST TYPE STRING,
MBRUE TYPE STRING,
OKLAS TYPE STRING,
MATNR_EXT TYPE STRING,
MATNR_VERS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MGV_QBEW_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_QBEW_STR-MANDT sy-vline 
WA_MGV_QBEW_STR-MATNR sy-vline 
WA_MGV_QBEW_STR-BWKEY sy-vline 
WA_MGV_QBEW_STR-BWTAR sy-vline 
WA_MGV_QBEW_STR-SOBKZ sy-vline 
WA_MGV_QBEW_STR-PSPNR sy-vline 
WA_MGV_QBEW_STR-LBKUM sy-vline 
WA_MGV_QBEW_STR-SALK3 sy-vline 
WA_MGV_QBEW_STR-VPRSV sy-vline 
WA_MGV_QBEW_STR-VERPR sy-vline 
WA_MGV_QBEW_STR-STPRS sy-vline 
WA_MGV_QBEW_STR-PEINH sy-vline 
WA_MGV_QBEW_STR-BKLAS sy-vline 
WA_MGV_QBEW_STR-SALKV sy-vline 
WA_MGV_QBEW_STR-VMKUM sy-vline 
WA_MGV_QBEW_STR-VMSAL sy-vline 
WA_MGV_QBEW_STR-VMVPR sy-vline 
WA_MGV_QBEW_STR-VMVER sy-vline 
WA_MGV_QBEW_STR-VMSTP sy-vline 
WA_MGV_QBEW_STR-VMPEI sy-vline 
WA_MGV_QBEW_STR-VMBKL sy-vline 
WA_MGV_QBEW_STR-VMSAV sy-vline 
WA_MGV_QBEW_STR-VJKUM sy-vline 
WA_MGV_QBEW_STR-VJSAL sy-vline 
WA_MGV_QBEW_STR-VJVPR sy-vline 
WA_MGV_QBEW_STR-VJVER sy-vline 
WA_MGV_QBEW_STR-VJSTP sy-vline 
WA_MGV_QBEW_STR-VJPEI sy-vline 
WA_MGV_QBEW_STR-VJBKL sy-vline 
WA_MGV_QBEW_STR-VJSAV sy-vline 
WA_MGV_QBEW_STR-LFGJA sy-vline 
WA_MGV_QBEW_STR-LFMON sy-vline 
WA_MGV_QBEW_STR-BWTTY sy-vline 
WA_MGV_QBEW_STR-STPRV sy-vline 
WA_MGV_QBEW_STR-LAEPR sy-vline 
WA_MGV_QBEW_STR-ZKPRS sy-vline 
WA_MGV_QBEW_STR-ZKDAT sy-vline 
WA_MGV_QBEW_STR-TIMESTAMP sy-vline 
WA_MGV_QBEW_STR-ZPLPR sy-vline 
WA_MGV_QBEW_STR-KALKZ sy-vline 
WA_MGV_QBEW_STR-KALKL sy-vline 
WA_MGV_QBEW_STR-KALKV sy-vline 
WA_MGV_QBEW_STR-KALN1 sy-vline 
WA_MGV_QBEW_STR-BWVA1 sy-vline 
WA_MGV_QBEW_STR-BWVA2 sy-vline 
WA_MGV_QBEW_STR-BWVA3 sy-vline 
WA_MGV_QBEW_STR-VERS1 sy-vline 
WA_MGV_QBEW_STR-VERS2 sy-vline 
WA_MGV_QBEW_STR-VERS3 sy-vline 
WA_MGV_QBEW_STR-HRKFT sy-vline 
WA_MGV_QBEW_STR-KOSGR sy-vline 
WA_MGV_QBEW_STR-PPRDZ sy-vline 
WA_MGV_QBEW_STR-PPRDL sy-vline 
WA_MGV_QBEW_STR-PPRDV sy-vline 
WA_MGV_QBEW_STR-PDATZ sy-vline 
WA_MGV_QBEW_STR-PDATL sy-vline 
WA_MGV_QBEW_STR-PDATV sy-vline 
WA_MGV_QBEW_STR-EKALR sy-vline 
WA_MGV_QBEW_STR-VPLPR sy-vline 
WA_MGV_QBEW_STR-MLMAA sy-vline 
WA_MGV_QBEW_STR-MLAST sy-vline 
WA_MGV_QBEW_STR-LPLPR sy-vline 
WA_MGV_QBEW_STR-VKSAL sy-vline 
WA_MGV_QBEW_STR-HKMAT sy-vline 
WA_MGV_QBEW_STR-BWSPA sy-vline 
WA_MGV_QBEW_STR-LPLPX sy-vline 
WA_MGV_QBEW_STR-VPLPX sy-vline 
WA_MGV_QBEW_STR-FPLPX sy-vline 
WA_MGV_QBEW_STR-LBWST sy-vline 
WA_MGV_QBEW_STR-VBWST sy-vline 
WA_MGV_QBEW_STR-FBWST sy-vline 
WA_MGV_QBEW_STR-MBRUE sy-vline 
WA_MGV_QBEW_STR-OKLAS sy-vline 
WA_MGV_QBEW_STR-MATNR_EXT sy-vline 
WA_MGV_QBEW_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.