ABAP Select data from SAP table MMPUR_S_RFQ_ITEM_ODATA_API into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MMPUR_S_RFQ_ITEM_ODATA_API 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_S_RFQ_ITEM_ODATA_API. 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_S_RFQ_ITEM_ODATA_API 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_S_RFQ_ITEM_ODATA_API TYPE STANDARD TABLE OF MMPUR_S_RFQ_ITEM_ODATA_API,
      WA_MMPUR_S_RFQ_ITEM_ODATA_API TYPE MMPUR_S_RFQ_ITEM_ODATA_API,
      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_S_RFQ_ITEM_ODATA_API> TYPE MMPUR_S_RFQ_ITEM_ODATA_API.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MMPUR_S_RFQ_ITEM_ODATA_API
*  INTO TABLE @DATA(IT_MMPUR_S_RFQ_ITEM_ODATA_API2).
*--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_S_RFQ_ITEM_ODATA_API INDEX 1 INTO DATA(WA_MMPUR_S_RFQ_ITEM_ODATA_API2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MMPUR_S_RFQ_ITEM_ODATA_API>-REQUESTFORQUOTATIONITEM = 1.
<MMPUR_S_RFQ_ITEM_ODATA_API>-REQUESTFORQUOTATION = 1.
<MMPUR_S_RFQ_ITEM_ODATA_API>-PURCHASINGDOCUMENTCATEGORY = 1.
<MMPUR_S_RFQ_ITEM_ODATA_API>-PURCHASINGDOCUMENTITEMTEXT = 1.
<MMPUR_S_RFQ_ITEM_ODATA_API>-MATERIAL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MMPUR_S_RFQ_ITEM_ODATA_API-MANUFACTURERMATERIAL, sy-vline,
  WA_MMPUR_S_RFQ_ITEM_ODATA_API-MANUFACTURERPARTNMBR, sy-vline,
  WA_MMPUR_S_RFQ_ITEM_ODATA_API-MANUFACTURER, sy-vline,
  WA_MMPUR_S_RFQ_ITEM_ODATA_API-MATERIALGROUP, sy-vline,
  WA_MMPUR_S_RFQ_ITEM_ODATA_API-PLANT, sy-vline,
  WA_MMPUR_S_RFQ_ITEM_ODATA_API-MANUALDELIVERYADDRESSID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MMPUR_S_RFQ_ITEM_ODATA_API 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_S_RFQ_ITEM_ODATA_API 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_S_RFQ_ITEM_ODATA_API INTO WA_MMPUR_S_RFQ_ITEM_ODATA_API.


*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 REQUESTFORQUOTATION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MMPUR_S_RFQ_ITEM_ODATA_API-REQUESTFORQUOTATION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_S_RFQ_ITEM_ODATA_API-REQUESTFORQUOTATION.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field PURCHASEREQUISITION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MMPUR_S_RFQ_ITEM_ODATA_API-PURCHASEREQUISITION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_S_RFQ_ITEM_ODATA_API-PURCHASEREQUISITION.
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_S_RFQ_ITEM_ODATA_API_STR, 
REQUESTFORQUOTATIONITEM TYPE STRING,
REQUESTFORQUOTATION TYPE STRING,
PURCHASINGDOCUMENTCATEGORY TYPE STRING,
PURCHASINGDOCUMENTITEMTEXT TYPE STRING,
MATERIAL TYPE STRING,
MANUFACTURERMATERIAL TYPE STRING,
MANUFACTURERPARTNMBR TYPE STRING,
MANUFACTURER TYPE STRING,
MATERIALGROUP TYPE STRING,
PLANT TYPE STRING,
MANUALDELIVERYADDRESSID TYPE STRING,
REFERENCEDELIVERYADDRESSID TYPE STRING,
INCOTERMSCLASSIFICATION TYPE STRING,
INCOTERMSTRANSFERLOCATION TYPE STRING,
INCOTERMSLOCATION1 TYPE STRING,
INCOTERMSLOCATION2 TYPE STRING,
SCHEDULELINEDELIVERYDATE TYPE STRING,
SCHEDULELINEORDERQUANTITY TYPE STRING,
ORDERQUANTITYUNIT TYPE STRING,
ORDERITEMQTYTOBASEQTYNMRTR TYPE STRING,
ORDERITEMQTYTOBASEQTYDNMNTR TYPE STRING,
BASEUNIT TYPE STRING,
PURCHASEREQUISITION TYPE STRING,
PURCHASEREQUISITIONITEM TYPE STRING,
ISINFORECORDUPDATED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MMPUR_S_RFQ_ITEM_ODATA_API_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_S_RFQ_ITEM_ODATA_API_STR-REQUESTFORQUOTATIONITEM sy-vline 
WA_MMPUR_S_RFQ_ITEM_ODATA_API_STR-REQUESTFORQUOTATION sy-vline 
WA_MMPUR_S_RFQ_ITEM_ODATA_API_STR-PURCHASINGDOCUMENTCATEGORY sy-vline 
WA_MMPUR_S_RFQ_ITEM_ODATA_API_STR-PURCHASINGDOCUMENTITEMTEXT sy-vline 
WA_MMPUR_S_RFQ_ITEM_ODATA_API_STR-MATERIAL sy-vline 
WA_MMPUR_S_RFQ_ITEM_ODATA_API_STR-MANUFACTURERMATERIAL sy-vline 
WA_MMPUR_S_RFQ_ITEM_ODATA_API_STR-MANUFACTURERPARTNMBR sy-vline 
WA_MMPUR_S_RFQ_ITEM_ODATA_API_STR-MANUFACTURER sy-vline 
WA_MMPUR_S_RFQ_ITEM_ODATA_API_STR-MATERIALGROUP sy-vline 
WA_MMPUR_S_RFQ_ITEM_ODATA_API_STR-PLANT sy-vline 
WA_MMPUR_S_RFQ_ITEM_ODATA_API_STR-MANUALDELIVERYADDRESSID sy-vline 
WA_MMPUR_S_RFQ_ITEM_ODATA_API_STR-REFERENCEDELIVERYADDRESSID sy-vline 
WA_MMPUR_S_RFQ_ITEM_ODATA_API_STR-INCOTERMSCLASSIFICATION sy-vline 
WA_MMPUR_S_RFQ_ITEM_ODATA_API_STR-INCOTERMSTRANSFERLOCATION sy-vline 
WA_MMPUR_S_RFQ_ITEM_ODATA_API_STR-INCOTERMSLOCATION1 sy-vline 
WA_MMPUR_S_RFQ_ITEM_ODATA_API_STR-INCOTERMSLOCATION2 sy-vline 
WA_MMPUR_S_RFQ_ITEM_ODATA_API_STR-SCHEDULELINEDELIVERYDATE sy-vline 
WA_MMPUR_S_RFQ_ITEM_ODATA_API_STR-SCHEDULELINEORDERQUANTITY sy-vline 
WA_MMPUR_S_RFQ_ITEM_ODATA_API_STR-ORDERQUANTITYUNIT sy-vline 
WA_MMPUR_S_RFQ_ITEM_ODATA_API_STR-ORDERITEMQTYTOBASEQTYNMRTR sy-vline 
WA_MMPUR_S_RFQ_ITEM_ODATA_API_STR-ORDERITEMQTYTOBASEQTYDNMNTR sy-vline 
WA_MMPUR_S_RFQ_ITEM_ODATA_API_STR-BASEUNIT sy-vline 
WA_MMPUR_S_RFQ_ITEM_ODATA_API_STR-PURCHASEREQUISITION sy-vline 
WA_MMPUR_S_RFQ_ITEM_ODATA_API_STR-PURCHASEREQUISITIONITEM sy-vline 
WA_MMPUR_S_RFQ_ITEM_ODATA_API_STR-ISINFORECORDUPDATED sy-vline      INTO ld_text SEPARATED BY SPACE.

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