ABAP Select data from SAP table MMPUR_REQN_SOS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MMPUR_REQN_SOS
*  INTO TABLE @DATA(IT_MMPUR_REQN_SOS2).
*--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_MMPUR_REQN_SOS INDEX 1 INTO DATA(WA_MMPUR_REQN_SOS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MMPUR_REQN_SOS>-SUPPLIER = 1.
<MMPUR_REQN_SOS>-SUPPLYINGPLANT = 1.
<MMPUR_REQN_SOS>-PURCHASINGDOCUMENT = 1.
<MMPUR_REQN_SOS>-PURCAHNSINGDOCUMENTITEM = 1.
<MMPUR_REQN_SOS>-PURCHASINGINFORECORD = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MMPUR_REQN_SOS-PURCHASINORGANISATION, sy-vline,
  WA_MMPUR_REQN_SOS-PURREQNITEMCURRENCY, sy-vline,
  WA_MMPUR_REQN_SOS-EMATN, sy-vline,
  WA_MMPUR_REQN_SOS-CONSUMPTIONPOSTING, sy-vline,
  WA_MMPUR_REQN_SOS-ACCTASSIGNMENTCATEGORY, sy-vline,
  WA_MMPUR_REQN_SOS-PURCHASINGDOCUMENTITEMCATEGORY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MMPUR_REQN_SOS 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_MMPUR_REQN_SOS 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_MMPUR_REQN_SOS INTO WA_MMPUR_REQN_SOS.


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

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

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

*Conversion exit MATN1, internal->external for field EMATN
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MMPUR_REQN_SOS-EMATN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_REQN_SOS-EMATN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MMPUR_REQN_SOS-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_REQN_SOS-MATERIAL.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field FIXEDSUPPLIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MMPUR_REQN_SOS-FIXEDSUPPLIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_REQN_SOS-FIXEDSUPPLIER.
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_MMPUR_REQN_SOS_STR, 
SUPPLIER TYPE STRING,
SUPPLYINGPLANT TYPE STRING,
PURCHASINGDOCUMENT TYPE STRING,
PURCAHNSINGDOCUMENTITEM TYPE STRING,
PURCHASINGINFORECORD TYPE STRING,
PURCHASINORGANISATION TYPE STRING,
PURREQNITEMCURRENCY TYPE STRING,
EMATN TYPE STRING,
CONSUMPTIONPOSTING TYPE STRING,
ACCTASSIGNMENTCATEGORY TYPE STRING,
PURCHASINGDOCUMENTITEMCATEGORY TYPE STRING,
PLANT TYPE STRING,
MATERIAL TYPE STRING,
BASEUNIT TYPE STRING,
MATERIALGROUP TYPE STRING,
FIXEDSUPPLIER TYPE STRING,
NETPRICE TYPE STRING,
CURRENCY TYPE STRING,
SUPPLYINGVENDORNAME TYPE STRING,
DELIVERYDATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MMPUR_REQN_SOS_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_MMPUR_REQN_SOS_STR-SUPPLIER sy-vline 
WA_MMPUR_REQN_SOS_STR-SUPPLYINGPLANT sy-vline 
WA_MMPUR_REQN_SOS_STR-PURCHASINGDOCUMENT sy-vline 
WA_MMPUR_REQN_SOS_STR-PURCAHNSINGDOCUMENTITEM sy-vline 
WA_MMPUR_REQN_SOS_STR-PURCHASINGINFORECORD sy-vline 
WA_MMPUR_REQN_SOS_STR-PURCHASINORGANISATION sy-vline 
WA_MMPUR_REQN_SOS_STR-PURREQNITEMCURRENCY sy-vline 
WA_MMPUR_REQN_SOS_STR-EMATN sy-vline 
WA_MMPUR_REQN_SOS_STR-CONSUMPTIONPOSTING sy-vline 
WA_MMPUR_REQN_SOS_STR-ACCTASSIGNMENTCATEGORY sy-vline 
WA_MMPUR_REQN_SOS_STR-PURCHASINGDOCUMENTITEMCATEGORY sy-vline 
WA_MMPUR_REQN_SOS_STR-PLANT sy-vline 
WA_MMPUR_REQN_SOS_STR-MATERIAL sy-vline 
WA_MMPUR_REQN_SOS_STR-BASEUNIT sy-vline 
WA_MMPUR_REQN_SOS_STR-MATERIALGROUP sy-vline 
WA_MMPUR_REQN_SOS_STR-FIXEDSUPPLIER sy-vline 
WA_MMPUR_REQN_SOS_STR-NETPRICE sy-vline 
WA_MMPUR_REQN_SOS_STR-CURRENCY sy-vline 
WA_MMPUR_REQN_SOS_STR-SUPPLYINGVENDORNAME sy-vline 
WA_MMPUR_REQN_SOS_STR-DELIVERYDATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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