ABAP Select data from SAP table MDR1INALLOWEDQTUNIT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MDR1INALLOWEDQTUNIT 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 MDR1INALLOWEDQTUNIT. 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 MDR1INALLOWEDQTUNIT 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_MDR1INALLOWEDQTUNIT TYPE STANDARD TABLE OF MDR1INALLOWEDQTUNIT,
      WA_MDR1INALLOWEDQTUNIT TYPE MDR1INALLOWEDQTUNIT,
      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: <MDR1INALLOWEDQTUNIT> TYPE MDR1INALLOWEDQTUNIT.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_MDR1INALLOWEDQTUNIT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM MDR1INALLOWEDQTUNIT
  INTO TABLE IT_MDR1INALLOWEDQTUNIT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MDR1INALLOWEDQTUNIT
*  INTO TABLE @DATA(IT_MDR1INALLOWEDQTUNIT2).
*--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_MDR1INALLOWEDQTUNIT INDEX 1 INTO DATA(WA_MDR1INALLOWEDQTUNIT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_MDR1INALLOWEDQTUNIT ASSIGNING <MDR1INALLOWEDQTUNIT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MDR1INALLOWEDQTUNIT>-APPVIEW = 1.
<MDR1INALLOWEDQTUNIT>-FLAGDEFQTUNIT = 1.
<MDR1INALLOWEDQTUNIT>-FLAGVENQTUNIT = 1.
<MDR1INALLOWEDQTUNIT>-FLAGBUYQTUNIT = 1.
<MDR1INALLOWEDQTUNIT>-FLAGALLQTUNIT = 1.

ENDLOOP.

LOOP AT IT_MDR1INALLOWEDQTUNIT INTO WA_MDR1INALLOWEDQTUNIT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MDR1INALLOWEDQTUNIT-LIFNR, sy-vline,
  WA_MDR1INALLOWEDQTUNIT-INTVEND, sy-vline,
  WA_MDR1INALLOWEDQTUNIT-WERKS_KRED, sy-vline,
  WA_MDR1INALLOWEDQTUNIT-EKORG, sy-vline,
  WA_MDR1INALLOWEDQTUNIT-WERKS, sy-vline,
  WA_MDR1INALLOWEDQTUNIT-KUNNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MDR1INALLOWEDQTUNIT 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_MDR1INALLOWEDQTUNIT 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_MDR1INALLOWEDQTUNIT INTO WA_MDR1INALLOWEDQTUNIT.


*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 LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MDR1INALLOWEDQTUNIT-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MDR1INALLOWEDQTUNIT-LIFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MDR1INALLOWEDQTUNIT-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MDR1INALLOWEDQTUNIT-KUNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MDR1INALLOWEDQTUNIT-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MDR1INALLOWEDQTUNIT-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field INFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MDR1INALLOWEDQTUNIT-INFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MDR1INALLOWEDQTUNIT-INFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field DEFQTUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MDR1INALLOWEDQTUNIT-DEFQTUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MDR1INALLOWEDQTUNIT-DEFQTUNIT.
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_MDR1INALLOWEDQTUNIT_STR, 
APPVIEW TYPE STRING,
FLAGDEFQTUNIT TYPE STRING,
FLAGVENQTUNIT TYPE STRING,
FLAGBUYQTUNIT TYPE STRING,
FLAGALLQTUNIT TYPE STRING,
LIFNR TYPE STRING,
INTVEND TYPE STRING,
WERKS_KRED TYPE STRING,
EKORG TYPE STRING,
WERKS TYPE STRING,
KUNNR TYPE STRING,
INTCUST TYPE STRING,
VTWEG TYPE STRING,
VKORG TYPE STRING,
SPART TYPE STRING,
INFLS TYPE STRING,
MATNR TYPE STRING,
INFNR TYPE STRING,
PSTYP TYPE STRING,
MSR_VAR_SUOM TYPE STRING,
DEFQTUNIT TYPE STRING,
DEFUMREZ TYPE STRING,
DEFUMREN TYPE STRING,
VENUNITGR TYPE STRING,
BUYUNITGR TYPE STRING,
VABME TYPE STRING,
VAVME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MDR1INALLOWEDQTUNIT_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_MDR1INALLOWEDQTUNIT_STR-APPVIEW sy-vline 
WA_MDR1INALLOWEDQTUNIT_STR-FLAGDEFQTUNIT sy-vline 
WA_MDR1INALLOWEDQTUNIT_STR-FLAGVENQTUNIT sy-vline 
WA_MDR1INALLOWEDQTUNIT_STR-FLAGBUYQTUNIT sy-vline 
WA_MDR1INALLOWEDQTUNIT_STR-FLAGALLQTUNIT sy-vline 
WA_MDR1INALLOWEDQTUNIT_STR-LIFNR sy-vline 
WA_MDR1INALLOWEDQTUNIT_STR-INTVEND sy-vline 
WA_MDR1INALLOWEDQTUNIT_STR-WERKS_KRED sy-vline 
WA_MDR1INALLOWEDQTUNIT_STR-EKORG sy-vline 
WA_MDR1INALLOWEDQTUNIT_STR-WERKS sy-vline 
WA_MDR1INALLOWEDQTUNIT_STR-KUNNR sy-vline 
WA_MDR1INALLOWEDQTUNIT_STR-INTCUST sy-vline 
WA_MDR1INALLOWEDQTUNIT_STR-VTWEG sy-vline 
WA_MDR1INALLOWEDQTUNIT_STR-VKORG sy-vline 
WA_MDR1INALLOWEDQTUNIT_STR-SPART sy-vline 
WA_MDR1INALLOWEDQTUNIT_STR-INFLS sy-vline 
WA_MDR1INALLOWEDQTUNIT_STR-MATNR sy-vline 
WA_MDR1INALLOWEDQTUNIT_STR-INFNR sy-vline 
WA_MDR1INALLOWEDQTUNIT_STR-PSTYP sy-vline 
WA_MDR1INALLOWEDQTUNIT_STR-MSR_VAR_SUOM sy-vline 
WA_MDR1INALLOWEDQTUNIT_STR-DEFQTUNIT sy-vline 
WA_MDR1INALLOWEDQTUNIT_STR-DEFUMREZ sy-vline 
WA_MDR1INALLOWEDQTUNIT_STR-DEFUMREN sy-vline 
WA_MDR1INALLOWEDQTUNIT_STR-VENUNITGR sy-vline 
WA_MDR1INALLOWEDQTUNIT_STR-BUYUNITGR sy-vline 
WA_MDR1INALLOWEDQTUNIT_STR-VABME sy-vline 
WA_MDR1INALLOWEDQTUNIT_STR-VAVME sy-vline      INTO ld_text SEPARATED BY SPACE.

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