ABAP Select data from SAP table MMRP_MD_ORDERS 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 MMRP_MD_ORDERS 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 MMRP_MD_ORDERS. 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 MMRP_MD_ORDERS 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_MMRP_MD_ORDERS TYPE STANDARD TABLE OF MMRP_MD_ORDERS,
      WA_MMRP_MD_ORDERS TYPE MMRP_MD_ORDERS,
      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: <MMRP_MD_ORDERS> TYPE MMRP_MD_ORDERS.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MMRP_MD_ORDERS
*  INTO TABLE @DATA(IT_MMRP_MD_ORDERS2).
*--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_MMRP_MD_ORDERS INDEX 1 INTO DATA(WA_MMRP_MD_ORDERS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MMRP_MD_ORDERS>-NUMMER = 1.
<MMRP_MD_ORDERS>-EXPLDATE = 1.
<MMRP_MD_ORDERS>-REQDATE = 1.
<MMRP_MD_ORDERS>-REQTIME = 1.
<MMRP_MD_ORDERS>-MATNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MMRP_MD_ORDERS-TR_NAME, sy-vline,
  WA_MMRP_MD_ORDERS-ORDERQUAN, sy-vline,
  WA_MMRP_MD_ORDERS-ORDERMEINS, sy-vline,
  WA_MMRP_MD_ORDERS-KIND_OF_MATRIX, sy-vline,
  WA_MMRP_MD_ORDERS-SSEXT, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_MMRP_MD_ORDERS 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_MMRP_MD_ORDERS 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_MMRP_MD_ORDERS INTO WA_MMRP_MD_ORDERS.


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

*Conversion exit CUNIT, internal->external for field ORDERMEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MMRP_MD_ORDERS-ORDERMEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMRP_MD_ORDERS-ORDERMEINS.
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_MMRP_MD_ORDERS_STR, 
NUMMER TYPE STRING,
EXPLDATE TYPE STRING,
REQDATE TYPE STRING,
REQTIME TYPE STRING,
MATNR TYPE STRING,
TR_NAME TYPE STRING,
ORDERQUAN TYPE STRING,
ORDERMEINS TYPE STRING,
KIND_OF_MATRIX TYPE STRING,
SSEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MMRP_MD_ORDERS_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_MMRP_MD_ORDERS_STR-NUMMER sy-vline 
WA_MMRP_MD_ORDERS_STR-EXPLDATE sy-vline 
WA_MMRP_MD_ORDERS_STR-REQDATE sy-vline 
WA_MMRP_MD_ORDERS_STR-REQTIME sy-vline 
WA_MMRP_MD_ORDERS_STR-MATNR sy-vline 
WA_MMRP_MD_ORDERS_STR-TR_NAME sy-vline 
WA_MMRP_MD_ORDERS_STR-ORDERQUAN sy-vline 
WA_MMRP_MD_ORDERS_STR-ORDERMEINS sy-vline 
WA_MMRP_MD_ORDERS_STR-KIND_OF_MATRIX sy-vline 
WA_MMRP_MD_ORDERS_STR-SSEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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