ABAP Select data from SAP table CMRPPURCHREQ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMRPPURCHREQ
*  INTO TABLE @DATA(IT_CMRPPURCHREQ2).
*--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_CMRPPURCHREQ INDEX 1 INTO DATA(WA_CMRPPURCHREQ2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CMRPPURCHREQ-SUPPLYINGPLANT, sy-vline,
  WA_CMRPPURCHREQ-PURCHASEREQUISITIONTYPE, sy-vline,
  WA_CMRPPURCHREQ-PURCHASINGORGANIZATION, sy-vline,
  WA_CMRPPURCHREQ-SUPPLIER, sy-vline,
  WA_CMRPPURCHREQ-SUPPLIERNAME, sy-vline,
  WA_CMRPPURCHREQ-SUPPLIERFULLNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CMRPPURCHREQ 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_CMRPPURCHREQ 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_CMRPPURCHREQ INTO WA_CMRPPURCHREQ.


*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_CMRPPURCHREQ-PURCHASEREQUISITION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMRPPURCHREQ-PURCHASEREQUISITION.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit SXIDN, internal->external for field EMAILADDRESS
CALL FUNCTION 'CONVERSION_EXIT_SXIDN_OUTPUT'
  EXPORTING
    input =                      WA_CMRPPURCHREQ-EMAILADDRESS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMRPPURCHREQ-EMAILADDRESS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SXIDN, internal->external for field PURCHASINGGROUPEMAILADDRESS
CALL FUNCTION 'CONVERSION_EXIT_SXIDN_OUTPUT'
  EXPORTING
    input =                      WA_CMRPPURCHREQ-PURCHASINGGROUPEMAILADDRESS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMRPPURCHREQ-PURCHASINGGROUPEMAILADDRESS.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ABPSN, internal->external for field WBSELEMENT
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_CMRPPURCHREQ-WBSELEMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMRPPURCHREQ-WBSELEMENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSN, internal->external for field PROJECT
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_CMRPPURCHREQ-PROJECT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMRPPURCHREQ-PROJECT.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit MATN1, internal->external for field SALESORDERITEMMATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_CMRPPURCHREQ-SALESORDERITEMMATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMRPPURCHREQ-SALESORDERITEMMATERIAL.
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_CMRPPURCHREQ_STR, 
MANDT TYPE STRING,
PURCHASEREQUISITION TYPE STRING,
PURCHASEREQUISITIONITEM TYPE STRING,
MATERIAL TYPE STRING,
MRPPLANT TYPE STRING,
SUPPLYINGPLANT TYPE STRING,
PURCHASEREQUISITIONTYPE TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
SUPPLIER TYPE STRING,
SUPPLIERNAME TYPE STRING,
SUPPLIERFULLNAME TYPE STRING,
PHONENUMBER1 TYPE STRING,
EMAILADDRESS TYPE STRING,
PURCHASINGGROUP TYPE STRING,
PURCHASINGGROUPNAME TYPE STRING,
PURCHASINGGROUPEMAILADDRESS TYPE STRING,
PURCHASINGGROUPPHONENUMBER TYPE STRING,
MRPCONTROLLER TYPE STRING,
MRPCONTROLLERNAME TYPE STRING,
PURCHASEREQUISITIONUNIT TYPE STRING,
TOTALQUANTITY TYPE STRING,
ORDEREDQUANTITY TYPE STRING,
OPENQUANTITY TYPE STRING,
SUPPLIERMATERIALNUMBER TYPE STRING,
MATERIALPLANNEDDELIVERYDURN TYPE STRING,
MINIMUMORDERQUANTITY TYPE STRING,
MAXIMUMORDERQUANTITY TYPE STRING,
MATERIALFIXEDLOTSIZEQUANTITY TYPE STRING,
MATERIALMINLOTSIZEQUANTITY TYPE STRING,
MATERIALMAXLOTSIZEQUANTITY TYPE STRING,
LOTSIZEROUNDINGQUANTITY TYPE STRING,
MATERIALROUNDINGPROFILE TYPE STRING,
EXTERNALAPPROVALSTATUS TYPE STRING,
MATERIALPROCUREMENTCATEGORY TYPE STRING,
MATERIALPROCUREMENTCATNAME TYPE STRING,
PURCHASEREQUISITIONRELEASEDATE TYPE STRING,
DELIVERYDATE TYPE STRING,
MATERIALGOODSRECEIPTDURATION TYPE STRING,
WBSELEMENT TYPE STRING,
WBSELEMENTDESCRIPTION TYPE STRING,
WBSDESCRIPTION TYPE STRING,
RESPONSIBLEPERSON TYPE STRING,
RESPONSIBLEPERSONNAME TYPE STRING,
PROJECT TYPE STRING,
PROJECTDESCRIPTION TYPE STRING,
SALESDOCUMENT TYPE STRING,
SALESORDERITEMMATERIAL TYPE STRING,
SALESORDERITEMMATERIALNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMRPPURCHREQ_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_CMRPPURCHREQ_STR-MANDT sy-vline 
WA_CMRPPURCHREQ_STR-PURCHASEREQUISITION sy-vline 
WA_CMRPPURCHREQ_STR-PURCHASEREQUISITIONITEM sy-vline 
WA_CMRPPURCHREQ_STR-MATERIAL sy-vline 
WA_CMRPPURCHREQ_STR-MRPPLANT sy-vline 
WA_CMRPPURCHREQ_STR-SUPPLYINGPLANT sy-vline 
WA_CMRPPURCHREQ_STR-PURCHASEREQUISITIONTYPE sy-vline 
WA_CMRPPURCHREQ_STR-PURCHASINGORGANIZATION sy-vline 
WA_CMRPPURCHREQ_STR-SUPPLIER sy-vline 
WA_CMRPPURCHREQ_STR-SUPPLIERNAME sy-vline 
WA_CMRPPURCHREQ_STR-SUPPLIERFULLNAME sy-vline 
WA_CMRPPURCHREQ_STR-PHONENUMBER1 sy-vline 
WA_CMRPPURCHREQ_STR-EMAILADDRESS sy-vline 
WA_CMRPPURCHREQ_STR-PURCHASINGGROUP sy-vline 
WA_CMRPPURCHREQ_STR-PURCHASINGGROUPNAME sy-vline 
WA_CMRPPURCHREQ_STR-PURCHASINGGROUPEMAILADDRESS sy-vline 
WA_CMRPPURCHREQ_STR-PURCHASINGGROUPPHONENUMBER sy-vline 
WA_CMRPPURCHREQ_STR-MRPCONTROLLER sy-vline 
WA_CMRPPURCHREQ_STR-MRPCONTROLLERNAME sy-vline 
WA_CMRPPURCHREQ_STR-PURCHASEREQUISITIONUNIT sy-vline 
WA_CMRPPURCHREQ_STR-TOTALQUANTITY sy-vline 
WA_CMRPPURCHREQ_STR-ORDEREDQUANTITY sy-vline 
WA_CMRPPURCHREQ_STR-OPENQUANTITY sy-vline 
WA_CMRPPURCHREQ_STR-SUPPLIERMATERIALNUMBER sy-vline 
WA_CMRPPURCHREQ_STR-MATERIALPLANNEDDELIVERYDURN sy-vline 
WA_CMRPPURCHREQ_STR-MINIMUMORDERQUANTITY sy-vline 
WA_CMRPPURCHREQ_STR-MAXIMUMORDERQUANTITY sy-vline 
WA_CMRPPURCHREQ_STR-MATERIALFIXEDLOTSIZEQUANTITY sy-vline 
WA_CMRPPURCHREQ_STR-MATERIALMINLOTSIZEQUANTITY sy-vline 
WA_CMRPPURCHREQ_STR-MATERIALMAXLOTSIZEQUANTITY sy-vline 
WA_CMRPPURCHREQ_STR-LOTSIZEROUNDINGQUANTITY sy-vline 
WA_CMRPPURCHREQ_STR-MATERIALROUNDINGPROFILE sy-vline 
WA_CMRPPURCHREQ_STR-EXTERNALAPPROVALSTATUS sy-vline 
WA_CMRPPURCHREQ_STR-MATERIALPROCUREMENTCATEGORY sy-vline 
WA_CMRPPURCHREQ_STR-MATERIALPROCUREMENTCATNAME sy-vline 
WA_CMRPPURCHREQ_STR-PURCHASEREQUISITIONRELEASEDATE sy-vline 
WA_CMRPPURCHREQ_STR-DELIVERYDATE sy-vline 
WA_CMRPPURCHREQ_STR-MATERIALGOODSRECEIPTDURATION sy-vline 
WA_CMRPPURCHREQ_STR-WBSELEMENT sy-vline 
WA_CMRPPURCHREQ_STR-WBSELEMENTDESCRIPTION sy-vline 
WA_CMRPPURCHREQ_STR-WBSDESCRIPTION sy-vline 
WA_CMRPPURCHREQ_STR-RESPONSIBLEPERSON sy-vline 
WA_CMRPPURCHREQ_STR-RESPONSIBLEPERSONNAME sy-vline 
WA_CMRPPURCHREQ_STR-PROJECT sy-vline 
WA_CMRPPURCHREQ_STR-PROJECTDESCRIPTION sy-vline 
WA_CMRPPURCHREQ_STR-SALESDOCUMENT sy-vline 
WA_CMRPPURCHREQ_STR-SALESORDERITEMMATERIAL sy-vline 
WA_CMRPPURCHREQ_STR-SALESORDERITEMMATERIALNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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