ABAP Select data from SAP table PROD_MRP into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PROD_MRP
*  INTO TABLE @DATA(IT_PROD_MRP2).
*--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_PROD_MRP INDEX 1 INTO DATA(WA_PROD_MRP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PROD_MRP>-MANDT = 1.
<PROD_MRP>-DRAFTUUID = 1.
<PROD_MRP>-PRODUCT = 1.
<PROD_MRP>-MRPAREA = 1.
<PROD_MRP>-PLANT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PROD_MRP-PRODUCTFOREDIT, sy-vline,
  WA_PROD_MRP-PLANTFOREDIT, sy-vline,
  WA_PROD_MRP-MRPAREAFOREDIT, sy-vline,
  WA_PROD_MRP-MRPPROFILE, sy-vline,
  WA_PROD_MRP-MRPTYPE, sy-vline,
  WA_PROD_MRP-MRPRESPONSIBLE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PROD_MRP 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_PROD_MRP 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_PROD_MRP INTO WA_PROD_MRP.


*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 PRODUCT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_PROD_MRP-PRODUCT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PROD_MRP-PRODUCT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field PRODUCTFOREDIT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_PROD_MRP-PRODUCTFOREDIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PROD_MRP-PRODUCTFOREDIT.
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_PROD_MRP_STR, 
MANDT TYPE STRING,
DRAFTUUID TYPE STRING,
PRODUCT TYPE STRING,
MRPAREA TYPE STRING,
PLANT TYPE STRING,
PRODUCTFOREDIT TYPE STRING,
PLANTFOREDIT TYPE STRING,
MRPAREAFOREDIT TYPE STRING,
MRPPROFILE TYPE STRING,
MRPTYPE TYPE STRING,
MRPRESPONSIBLE TYPE STRING,
MRPGROUP TYPE STRING,
REORDERTHRESHOLDQUANTITY TYPE STRING,
PLANANDORDERDAYDETERMINATION TYPE STRING,
PLANNINGTIMEFENCE TYPE STRING,
LOTSIZINGPROCEDURE TYPE STRING,
ROUNDINGPROFILE TYPE STRING,
LOTSIZEROUNDINGQUANTITY TYPE STRING,
MINIMUMLOTSIZEQUANTITY TYPE STRING,
MAXIMUMLOTSIZEQUANTITY TYPE STRING,
MAXIMUMSTOCKQUANTITY TYPE STRING,
ASSEMBLYSCRAPPERCENT TYPE STRING,
PROCUREMENTSUBTYPE TYPE STRING,
STORAGELOCATION TYPE STRING,
DFLTSTORAGELOCATIONEXTPROCMT TYPE STRING,
MRPPLANNINGCALENDAR TYPE STRING,
SAFETYSTOCKQUANTITY TYPE STRING,
RANGEOFCVRGPRFLCODE TYPE STRING,
SAFETYDURATION TYPE STRING,
FIXEDLOTSIZEQUANTITY TYPE STRING,
LOTSIZEINDEPENDENTCOSTS TYPE STRING,
ISSTORAGECOSTS TYPE STRING,
SRVCLVL TYPE STRING,
ISMARKEDFORDELETION TYPE STRING,
PERDPRFLFORSFTYTME TYPE STRING,
ISMRPDEPENDENTRQMT TYPE STRING,
MAINTENANCESTATUSNAME TYPE STRING,
ISSAFETYTIME TYPE STRING,
PLANNEDDELIVERYDURATIONINDAYS TYPE STRING,
ISPLANNEDDELIVERYTIME TYPE STRING,
HASACTIVEENTITY TYPE STRING,
DRAFTENTITYCREATIONDATETIME TYPE STRING,
DRAFTENTITYLASTCHANGEDATETIME TYPE STRING,
DRAFTADMINISTRATIVEDATAUUID TYPE STRING,
DRAFTENTITYCONSISTENCYSTATUS TYPE STRING,
DRAFTENTITYOPERATIONCODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PROD_MRP_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_PROD_MRP_STR-MANDT sy-vline 
WA_PROD_MRP_STR-DRAFTUUID sy-vline 
WA_PROD_MRP_STR-PRODUCT sy-vline 
WA_PROD_MRP_STR-MRPAREA sy-vline 
WA_PROD_MRP_STR-PLANT sy-vline 
WA_PROD_MRP_STR-PRODUCTFOREDIT sy-vline 
WA_PROD_MRP_STR-PLANTFOREDIT sy-vline 
WA_PROD_MRP_STR-MRPAREAFOREDIT sy-vline 
WA_PROD_MRP_STR-MRPPROFILE sy-vline 
WA_PROD_MRP_STR-MRPTYPE sy-vline 
WA_PROD_MRP_STR-MRPRESPONSIBLE sy-vline 
WA_PROD_MRP_STR-MRPGROUP sy-vline 
WA_PROD_MRP_STR-REORDERTHRESHOLDQUANTITY sy-vline 
WA_PROD_MRP_STR-PLANANDORDERDAYDETERMINATION sy-vline 
WA_PROD_MRP_STR-PLANNINGTIMEFENCE sy-vline 
WA_PROD_MRP_STR-LOTSIZINGPROCEDURE sy-vline 
WA_PROD_MRP_STR-ROUNDINGPROFILE sy-vline 
WA_PROD_MRP_STR-LOTSIZEROUNDINGQUANTITY sy-vline 
WA_PROD_MRP_STR-MINIMUMLOTSIZEQUANTITY sy-vline 
WA_PROD_MRP_STR-MAXIMUMLOTSIZEQUANTITY sy-vline 
WA_PROD_MRP_STR-MAXIMUMSTOCKQUANTITY sy-vline 
WA_PROD_MRP_STR-ASSEMBLYSCRAPPERCENT sy-vline 
WA_PROD_MRP_STR-PROCUREMENTSUBTYPE sy-vline 
WA_PROD_MRP_STR-STORAGELOCATION sy-vline 
WA_PROD_MRP_STR-DFLTSTORAGELOCATIONEXTPROCMT sy-vline 
WA_PROD_MRP_STR-MRPPLANNINGCALENDAR sy-vline 
WA_PROD_MRP_STR-SAFETYSTOCKQUANTITY sy-vline 
WA_PROD_MRP_STR-RANGEOFCVRGPRFLCODE sy-vline 
WA_PROD_MRP_STR-SAFETYDURATION sy-vline 
WA_PROD_MRP_STR-FIXEDLOTSIZEQUANTITY sy-vline 
WA_PROD_MRP_STR-LOTSIZEINDEPENDENTCOSTS sy-vline 
WA_PROD_MRP_STR-ISSTORAGECOSTS sy-vline 
WA_PROD_MRP_STR-SRVCLVL sy-vline 
WA_PROD_MRP_STR-ISMARKEDFORDELETION sy-vline 
WA_PROD_MRP_STR-PERDPRFLFORSFTYTME sy-vline 
WA_PROD_MRP_STR-ISMRPDEPENDENTRQMT sy-vline 
WA_PROD_MRP_STR-MAINTENANCESTATUSNAME sy-vline 
WA_PROD_MRP_STR-ISSAFETYTIME sy-vline 
WA_PROD_MRP_STR-PLANNEDDELIVERYDURATIONINDAYS sy-vline 
WA_PROD_MRP_STR-ISPLANNEDDELIVERYTIME sy-vline 
WA_PROD_MRP_STR-HASACTIVEENTITY sy-vline 
WA_PROD_MRP_STR-DRAFTENTITYCREATIONDATETIME sy-vline 
WA_PROD_MRP_STR-DRAFTENTITYLASTCHANGEDATETIME sy-vline 
WA_PROD_MRP_STR-DRAFTADMINISTRATIVEDATAUUID sy-vline 
WA_PROD_MRP_STR-DRAFTENTITYCONSISTENCYSTATUS sy-vline 
WA_PROD_MRP_STR-DRAFTENTITYOPERATIONCODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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