ABAP Select data from SAP table MDR1OUTALLOWEDQTUNIT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MDR1OUTALLOWEDQTUNIT 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 MDR1OUTALLOWEDQTUNIT. 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 MDR1OUTALLOWEDQTUNIT 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_MDR1OUTALLOWEDQTUNIT TYPE STANDARD TABLE OF MDR1OUTALLOWEDQTUNIT,
      WA_MDR1OUTALLOWEDQTUNIT TYPE MDR1OUTALLOWEDQTUNIT,
      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: <MDR1OUTALLOWEDQTUNIT> TYPE MDR1OUTALLOWEDQTUNIT.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_MDR1OUTALLOWEDQTUNIT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM MDR1OUTALLOWEDQTUNIT
  INTO TABLE IT_MDR1OUTALLOWEDQTUNIT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MDR1OUTALLOWEDQTUNIT
*  INTO TABLE @DATA(IT_MDR1OUTALLOWEDQTUNIT2).
*--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_MDR1OUTALLOWEDQTUNIT INDEX 1 INTO DATA(WA_MDR1OUTALLOWEDQTUNIT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_MDR1OUTALLOWEDQTUNIT ASSIGNING <MDR1OUTALLOWEDQTUNIT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MDR1OUTALLOWEDQTUNIT>-MATNR = 1.
<MDR1OUTALLOWEDQTUNIT>-MEINH = 1.
<MDR1OUTALLOWEDQTUNIT>-FLAGSIQTUNIT = 1.
<MDR1OUTALLOWEDQTUNIT>-ADDKO = 1.
<MDR1OUTALLOWEDQTUNIT>-DIMID = 1.

ENDLOOP.

LOOP AT IT_MDR1OUTALLOWEDQTUNIT INTO WA_MDR1OUTALLOWEDQTUNIT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MDR1OUTALLOWEDQTUNIT-UMREZ, sy-vline,
  WA_MDR1OUTALLOWEDQTUNIT-UMREN, sy-vline,
  WA_MDR1OUTALLOWEDQTUNIT-UMREZF, sy-vline,
  WA_MDR1OUTALLOWEDQTUNIT-UMRENF, sy-vline,
  WA_MDR1OUTALLOWEDQTUNIT-MSSIE, sy-vline,
  WA_MDR1OUTALLOWEDQTUNIT-ZAEHL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MDR1OUTALLOWEDQTUNIT 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_MDR1OUTALLOWEDQTUNIT 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_MDR1OUTALLOWEDQTUNIT INTO WA_MDR1OUTALLOWEDQTUNIT.


*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_MDR1OUTALLOWEDQTUNIT-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MDR1OUTALLOWEDQTUNIT-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MDR1OUTALLOWEDQTUNIT-MEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MDR1OUTALLOWEDQTUNIT-MEINH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MSSIE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MDR1OUTALLOWEDQTUNIT-MSSIE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MDR1OUTALLOWEDQTUNIT-MSSIE.
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_MDR1OUTALLOWEDQTUNIT_STR, 
MATNR TYPE STRING,
MEINH TYPE STRING,
FLAGSIQTUNIT TYPE STRING,
ADDKO TYPE STRING,
DIMID TYPE STRING,
UMREZ TYPE STRING,
UMREN TYPE STRING,
UMREZF TYPE STRING,
UMRENF TYPE STRING,
MSSIE TYPE STRING,
ZAEHL TYPE STRING,
NENNR TYPE STRING,
FLAGDEFQTUNIT TYPE STRING,
FLAGVENQTUNIT TYPE STRING,
FLAGBUYQTUNIT TYPE STRING,
FLAGALLQTUNIT TYPE STRING,
MSEHL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MDR1OUTALLOWEDQTUNIT_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_MDR1OUTALLOWEDQTUNIT_STR-MATNR sy-vline 
WA_MDR1OUTALLOWEDQTUNIT_STR-MEINH sy-vline 
WA_MDR1OUTALLOWEDQTUNIT_STR-FLAGSIQTUNIT sy-vline 
WA_MDR1OUTALLOWEDQTUNIT_STR-ADDKO sy-vline 
WA_MDR1OUTALLOWEDQTUNIT_STR-DIMID sy-vline 
WA_MDR1OUTALLOWEDQTUNIT_STR-UMREZ sy-vline 
WA_MDR1OUTALLOWEDQTUNIT_STR-UMREN sy-vline 
WA_MDR1OUTALLOWEDQTUNIT_STR-UMREZF sy-vline 
WA_MDR1OUTALLOWEDQTUNIT_STR-UMRENF sy-vline 
WA_MDR1OUTALLOWEDQTUNIT_STR-MSSIE sy-vline 
WA_MDR1OUTALLOWEDQTUNIT_STR-ZAEHL sy-vline 
WA_MDR1OUTALLOWEDQTUNIT_STR-NENNR sy-vline 
WA_MDR1OUTALLOWEDQTUNIT_STR-FLAGDEFQTUNIT sy-vline 
WA_MDR1OUTALLOWEDQTUNIT_STR-FLAGVENQTUNIT sy-vline 
WA_MDR1OUTALLOWEDQTUNIT_STR-FLAGBUYQTUNIT sy-vline 
WA_MDR1OUTALLOWEDQTUNIT_STR-FLAGALLQTUNIT sy-vline 
WA_MDR1OUTALLOWEDQTUNIT_STR-MSEHL sy-vline      INTO ld_text SEPARATED BY SPACE.

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