ABAP Select data from SAP table CMRPPURREQHNDSTS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMRPPURREQHNDSTS
*  INTO TABLE @DATA(IT_CMRPPURREQHNDSTS2).
*--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_CMRPPURREQHNDSTS INDEX 1 INTO DATA(WA_CMRPPURREQHNDSTS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CMRPPURREQHNDSTS>-MANDT = 1.
<CMRPPURREQHNDSTS>-PURCHASEREQUISITION = 1.
<CMRPPURREQHNDSTS>-PURCHASEREQUISITIONITEM = 1.
<CMRPPURREQHNDSTS>-EXTERNALAPPROVALSTATUS = 1.
<CMRPPURREQHNDSTS>-MATERIAL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CMRPPURREQHNDSTS-MATERIALNAME, sy-vline,
  WA_CMRPPURREQHNDSTS-MATERIALDESC, sy-vline,
  WA_CMRPPURREQHNDSTS-MRPPLANT, sy-vline,
  WA_CMRPPURREQHNDSTS-MRPAREA, sy-vline,
  WA_CMRPPURREQHNDSTS-SUPPLYINGPLANT, sy-vline,
  WA_CMRPPURREQHNDSTS-MRPGROUP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CMRPPURREQHNDSTS 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_CMRPPURREQHNDSTS 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_CMRPPURREQHNDSTS INTO WA_CMRPPURREQHNDSTS.


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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field CUSTOMERFULLNAME
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CMRPPURREQHNDSTS-CUSTOMERFULLNAME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMRPPURREQHNDSTS-CUSTOMERFULLNAME.
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_CMRPPURREQHNDSTS_STR, 
MANDT TYPE STRING,
PURCHASEREQUISITION TYPE STRING,
PURCHASEREQUISITIONITEM TYPE STRING,
EXTERNALAPPROVALSTATUS TYPE STRING,
MATERIAL TYPE STRING,
MATERIALNAME TYPE STRING,
MATERIALDESC TYPE STRING,
MRPPLANT TYPE STRING,
MRPAREA TYPE STRING,
SUPPLYINGPLANT TYPE STRING,
MRPGROUP TYPE STRING,
MRPCONTROLLER TYPE STRING,
PURCHASEREQUISITIONTYPE TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
PURCHASINGGROUP TYPE STRING,
SUPPLIER TYPE STRING,
SUPPLIERNAME TYPE STRING,
SUPPLIERFULLNAME TYPE STRING,
REQUESTEDQUANTITY TYPE STRING,
ORDEREDQUANTITY TYPE STRING,
OPENQUANTITY TYPE STRING,
MATERIALMINLOTSIZEQUANTITY TYPE STRING,
MATERIALMAXLOTSIZEQUANTITY TYPE STRING,
PURCHASEREQUISITIONUNIT TYPE STRING,
DELIVERYDATE TYPE STRING,
PURCHASEREQUISITIONRELEASEDATE TYPE STRING,
MATERIALPLANNEDDELIVERYDURN TYPE STRING,
MATERIALGOODSRECEIPTDURATION TYPE STRING,
MATERIALPROCUREMENTCATEGORY TYPE STRING,
MATERIALPROCUREMENTCATNAME TYPE STRING,
SALESORDER TYPE STRING,
SALESORDERITEM TYPE STRING,
CUSTOMER TYPE STRING,
CUSTOMERNAME TYPE STRING,
CUSTOMERFULLNAME TYPE STRING,
UNITOFMEASUREDSPNMBROFDCMLS TYPE STRING,
UNITOFMEASURENUMBEROFDECIMALS TYPE STRING,
PURREQNLASTCHANGEDATETIMEDESC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMRPPURREQHNDSTS_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_CMRPPURREQHNDSTS_STR-MANDT sy-vline 
WA_CMRPPURREQHNDSTS_STR-PURCHASEREQUISITION sy-vline 
WA_CMRPPURREQHNDSTS_STR-PURCHASEREQUISITIONITEM sy-vline 
WA_CMRPPURREQHNDSTS_STR-EXTERNALAPPROVALSTATUS sy-vline 
WA_CMRPPURREQHNDSTS_STR-MATERIAL sy-vline 
WA_CMRPPURREQHNDSTS_STR-MATERIALNAME sy-vline 
WA_CMRPPURREQHNDSTS_STR-MATERIALDESC sy-vline 
WA_CMRPPURREQHNDSTS_STR-MRPPLANT sy-vline 
WA_CMRPPURREQHNDSTS_STR-MRPAREA sy-vline 
WA_CMRPPURREQHNDSTS_STR-SUPPLYINGPLANT sy-vline 
WA_CMRPPURREQHNDSTS_STR-MRPGROUP sy-vline 
WA_CMRPPURREQHNDSTS_STR-MRPCONTROLLER sy-vline 
WA_CMRPPURREQHNDSTS_STR-PURCHASEREQUISITIONTYPE sy-vline 
WA_CMRPPURREQHNDSTS_STR-PURCHASINGORGANIZATION sy-vline 
WA_CMRPPURREQHNDSTS_STR-PURCHASINGGROUP sy-vline 
WA_CMRPPURREQHNDSTS_STR-SUPPLIER sy-vline 
WA_CMRPPURREQHNDSTS_STR-SUPPLIERNAME sy-vline 
WA_CMRPPURREQHNDSTS_STR-SUPPLIERFULLNAME sy-vline 
WA_CMRPPURREQHNDSTS_STR-REQUESTEDQUANTITY sy-vline 
WA_CMRPPURREQHNDSTS_STR-ORDEREDQUANTITY sy-vline 
WA_CMRPPURREQHNDSTS_STR-OPENQUANTITY sy-vline 
WA_CMRPPURREQHNDSTS_STR-MATERIALMINLOTSIZEQUANTITY sy-vline 
WA_CMRPPURREQHNDSTS_STR-MATERIALMAXLOTSIZEQUANTITY sy-vline 
WA_CMRPPURREQHNDSTS_STR-PURCHASEREQUISITIONUNIT sy-vline 
WA_CMRPPURREQHNDSTS_STR-DELIVERYDATE sy-vline 
WA_CMRPPURREQHNDSTS_STR-PURCHASEREQUISITIONRELEASEDATE sy-vline 
WA_CMRPPURREQHNDSTS_STR-MATERIALPLANNEDDELIVERYDURN sy-vline 
WA_CMRPPURREQHNDSTS_STR-MATERIALGOODSRECEIPTDURATION sy-vline 
WA_CMRPPURREQHNDSTS_STR-MATERIALPROCUREMENTCATEGORY sy-vline 
WA_CMRPPURREQHNDSTS_STR-MATERIALPROCUREMENTCATNAME sy-vline 
WA_CMRPPURREQHNDSTS_STR-SALESORDER sy-vline 
WA_CMRPPURREQHNDSTS_STR-SALESORDERITEM sy-vline 
WA_CMRPPURREQHNDSTS_STR-CUSTOMER sy-vline 
WA_CMRPPURREQHNDSTS_STR-CUSTOMERNAME sy-vline 
WA_CMRPPURREQHNDSTS_STR-CUSTOMERFULLNAME sy-vline 
WA_CMRPPURREQHNDSTS_STR-UNITOFMEASUREDSPNMBROFDCMLS sy-vline 
WA_CMRPPURREQHNDSTS_STR-UNITOFMEASURENUMBEROFDECIMALS sy-vline 
WA_CMRPPURREQHNDSTS_STR-PURREQNLASTCHANGEDATETIMEDESC sy-vline      INTO ld_text SEPARATED BY SPACE.

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