ABAP Select data from SAP table MDRP_QUOTA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MDRP_QUOTA
*  INTO TABLE @DATA(IT_MDRP_QUOTA2).
*--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_MDRP_QUOTA INDEX 1 INTO DATA(WA_MDRP_QUOTA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MDRP_QUOTA>-MATNR = 1.
<MDRP_QUOTA>-WERKS = 1.
<MDRP_QUOTA>-BDATU = 1.
<MDRP_QUOTA>-VDATU = 1.
<MDRP_QUOTA>-ERDAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MDRP_QUOTA-ERNAM, sy-vline,
  WA_MDRP_QUOTA-SCMNG, sy-vline,
  WA_MDRP_QUOTA-QUNUM, sy-vline,
  WA_MDRP_QUOTA-QUPOS, sy-vline,
  WA_MDRP_QUOTA-BESKZ, sy-vline,
  WA_MDRP_QUOTA-SOBES, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MDRP_QUOTA 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_MDRP_QUOTA 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_MDRP_QUOTA INTO WA_MDRP_QUOTA.


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

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

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

*Conversion exit MATN1, internal->external for field EMATN
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MDRP_QUOTA-EMATN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MDRP_QUOTA-EMATN.
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_MDRP_QUOTA_STR, 
MATNR TYPE STRING,
WERKS TYPE STRING,
BDATU TYPE STRING,
VDATU TYPE STRING,
ERDAT TYPE STRING,
ERNAM TYPE STRING,
SCMNG TYPE STRING,
QUNUM TYPE STRING,
QUPOS TYPE STRING,
BESKZ TYPE STRING,
SOBES TYPE STRING,
LIFNR TYPE STRING,
BEWRK TYPE STRING,
QUOTE TYPE STRING,
QUBMG TYPE STRING,
QUMNG TYPE STRING,
MAXMG TYPE STRING,
VERID TYPE STRING,
MAXLS TYPE STRING,
MINLS TYPE STRING,
RDPRF TYPE STRING,
KZEIN TYPE STRING,
ABRMG TYPE STRING,
ABPER TYPE STRING,
ABANZ TYPE STRING,
PREIH TYPE STRING,
FLGDA TYPE STRING,
FLGSP TYPE STRING,
PLIFZ TYPE STRING,
EMATN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MDRP_QUOTA_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_MDRP_QUOTA_STR-MATNR sy-vline 
WA_MDRP_QUOTA_STR-WERKS sy-vline 
WA_MDRP_QUOTA_STR-BDATU sy-vline 
WA_MDRP_QUOTA_STR-VDATU sy-vline 
WA_MDRP_QUOTA_STR-ERDAT sy-vline 
WA_MDRP_QUOTA_STR-ERNAM sy-vline 
WA_MDRP_QUOTA_STR-SCMNG sy-vline 
WA_MDRP_QUOTA_STR-QUNUM sy-vline 
WA_MDRP_QUOTA_STR-QUPOS sy-vline 
WA_MDRP_QUOTA_STR-BESKZ sy-vline 
WA_MDRP_QUOTA_STR-SOBES sy-vline 
WA_MDRP_QUOTA_STR-LIFNR sy-vline 
WA_MDRP_QUOTA_STR-BEWRK sy-vline 
WA_MDRP_QUOTA_STR-QUOTE sy-vline 
WA_MDRP_QUOTA_STR-QUBMG sy-vline 
WA_MDRP_QUOTA_STR-QUMNG sy-vline 
WA_MDRP_QUOTA_STR-MAXMG sy-vline 
WA_MDRP_QUOTA_STR-VERID sy-vline 
WA_MDRP_QUOTA_STR-MAXLS sy-vline 
WA_MDRP_QUOTA_STR-MINLS sy-vline 
WA_MDRP_QUOTA_STR-RDPRF sy-vline 
WA_MDRP_QUOTA_STR-KZEIN sy-vline 
WA_MDRP_QUOTA_STR-ABRMG sy-vline 
WA_MDRP_QUOTA_STR-ABPER sy-vline 
WA_MDRP_QUOTA_STR-ABANZ sy-vline 
WA_MDRP_QUOTA_STR-PREIH sy-vline 
WA_MDRP_QUOTA_STR-FLGDA sy-vline 
WA_MDRP_QUOTA_STR-FLGSP sy-vline 
WA_MDRP_QUOTA_STR-PLIFZ sy-vline 
WA_MDRP_QUOTA_STR-EMATN sy-vline      INTO ld_text SEPARATED BY SPACE.

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