ABAP Select data from SAP table IPMRPFLEXCON into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IPMRPFLEXCON
*  INTO TABLE @DATA(IT_IPMRPFLEXCON2).
*--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_IPMRPFLEXCON INDEX 1 INTO DATA(WA_IPMRPFLEXCON2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IPMRPFLEXCON>-MANDT = 1.
<IPMRPFLEXCON>-PMRPFLEXIBLECONSTRAINT = 1.
<IPMRPFLEXCON>-PMRPSIMULATION = 1.
<IPMRPFLEXCON>-PMRPCONSTRAINTTYPE = 1.
<IPMRPFLEXCON>-PMRPCONSTRAINTCATEGORY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IPMRPFLEXCON-PMRPFLEXIBLECONSTRAINTSCOPE, sy-vline,
  WA_IPMRPFLEXCON-PMRPCONSTRAINTPRODUCTSELECTION, sy-vline,
  WA_IPMRPFLEXCON-PMRPCONSTRAINTPERIODTYPE, sy-vline,
  WA_IPMRPFLEXCON-PRODUCT, sy-vline,
  WA_IPMRPFLEXCON-PLANT, sy-vline,
  WA_IPMRPFLEXCON-PRODUCTIONLINE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IPMRPFLEXCON 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_IPMRPFLEXCON 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_IPMRPFLEXCON INTO WA_IPMRPFLEXCON.


*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_IPMRPFLEXCON-PRODUCT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IPMRPFLEXCON-PRODUCT.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field PMRPCONSTRAINTBASEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IPMRPFLEXCON-PMRPCONSTRAINTBASEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IPMRPFLEXCON-PMRPCONSTRAINTBASEUNIT.
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_IPMRPFLEXCON_STR, 
MANDT TYPE STRING,
PMRPFLEXIBLECONSTRAINT TYPE STRING,
PMRPSIMULATION TYPE STRING,
PMRPCONSTRAINTTYPE TYPE STRING,
PMRPCONSTRAINTCATEGORY TYPE STRING,
PMRPFLEXIBLECONSTRAINTSCOPE TYPE STRING,
PMRPCONSTRAINTPRODUCTSELECTION TYPE STRING,
PMRPCONSTRAINTPERIODTYPE TYPE STRING,
PRODUCT TYPE STRING,
PLANT TYPE STRING,
PRODUCTIONLINE TYPE STRING,
SUPPLIER TYPE STRING,
SUPPLYINGPLANT TYPE STRING,
MRPAREA TYPE STRING,
MATERIALGROUP TYPE STRING,
PMRPCONSTRAINTTOLERANCEPERCENT TYPE STRING,
PMRPCONSTRAINTISDISREGARDED TYPE STRING,
PMRPCONSTRAINTBASEUNIT TYPE STRING,
PMRPSUPPLYGROUP TYPE STRING,
PMRPSUPPLYGROUPCATEGORY TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IPMRPFLEXCON_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_IPMRPFLEXCON_STR-MANDT sy-vline 
WA_IPMRPFLEXCON_STR-PMRPFLEXIBLECONSTRAINT sy-vline 
WA_IPMRPFLEXCON_STR-PMRPSIMULATION sy-vline 
WA_IPMRPFLEXCON_STR-PMRPCONSTRAINTTYPE sy-vline 
WA_IPMRPFLEXCON_STR-PMRPCONSTRAINTCATEGORY sy-vline 
WA_IPMRPFLEXCON_STR-PMRPFLEXIBLECONSTRAINTSCOPE sy-vline 
WA_IPMRPFLEXCON_STR-PMRPCONSTRAINTPRODUCTSELECTION sy-vline 
WA_IPMRPFLEXCON_STR-PMRPCONSTRAINTPERIODTYPE sy-vline 
WA_IPMRPFLEXCON_STR-PRODUCT sy-vline 
WA_IPMRPFLEXCON_STR-PLANT sy-vline 
WA_IPMRPFLEXCON_STR-PRODUCTIONLINE sy-vline 
WA_IPMRPFLEXCON_STR-SUPPLIER sy-vline 
WA_IPMRPFLEXCON_STR-SUPPLYINGPLANT sy-vline 
WA_IPMRPFLEXCON_STR-MRPAREA sy-vline 
WA_IPMRPFLEXCON_STR-MATERIALGROUP sy-vline 
WA_IPMRPFLEXCON_STR-PMRPCONSTRAINTTOLERANCEPERCENT sy-vline 
WA_IPMRPFLEXCON_STR-PMRPCONSTRAINTISDISREGARDED sy-vline 
WA_IPMRPFLEXCON_STR-PMRPCONSTRAINTBASEUNIT sy-vline 
WA_IPMRPFLEXCON_STR-PMRPSUPPLYGROUP sy-vline 
WA_IPMRPFLEXCON_STR-PMRPSUPPLYGROUPCATEGORY sy-vline 
WA_IPMRPFLEXCON_STR-CREATEDBYUSER sy-vline 
WA_IPMRPFLEXCON_STR-CREATIONDATETIME sy-vline 
WA_IPMRPFLEXCON_STR-LASTCHANGEDBYUSER sy-vline 
WA_IPMRPFLEXCON_STR-LASTCHANGEDATETIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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