ABAP Select data from SAP table CPREQITMBYPURORD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CPREQITMBYPURORD
*  INTO TABLE @DATA(IT_CPREQITMBYPURORD2).
*--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_CPREQITMBYPURORD INDEX 1 INTO DATA(WA_CPREQITMBYPURORD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CPREQITMBYPURORD>-MANDT = 1.
<CPREQITMBYPURORD>-PURCHASEREQUISITION = 1.
<CPREQITMBYPURORD>-PURCHASEREQUISITIONITEM = 1.
<CPREQITMBYPURORD>-PURCHASEORDER = 1.
<CPREQITMBYPURORD>-PURCHASEREQUISITIONTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CPREQITMBYPURORD-PLANT, sy-vline,
  WA_CPREQITMBYPURORD-PURCHASINGORGANIZATION, sy-vline,
  WA_CPREQITMBYPURORD-PURCHASINGGROUP, sy-vline,
  WA_CPREQITMBYPURORD-PURCHASEREQUISITIONITEMTEXT, sy-vline,
  WA_CPREQITMBYPURORD-MATERIALGROUP, sy-vline,
  WA_CPREQITMBYPURORD-DELIVERYDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CPREQITMBYPURORD 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_CPREQITMBYPURORD 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_CPREQITMBYPURORD INTO WA_CPREQITMBYPURORD.


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

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

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

*Conversion exit MATN1, internal->external for field MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_CPREQITMBYPURORD-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CPREQITMBYPURORD-MATERIAL.
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_CPREQITMBYPURORD_STR, 
MANDT TYPE STRING,
PURCHASEREQUISITION TYPE STRING,
PURCHASEREQUISITIONITEM TYPE STRING,
PURCHASEORDER TYPE STRING,
PURCHASEREQUISITIONTYPE TYPE STRING,
PLANT TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
PURCHASINGGROUP TYPE STRING,
PURCHASEREQUISITIONITEMTEXT TYPE STRING,
MATERIALGROUP TYPE STRING,
DELIVERYDATE TYPE STRING,
REQUESTEDQUANTITY TYPE STRING,
BASEUNIT TYPE STRING,
PURREQNITEMCURRENCY TYPE STRING,
PURCHASEREQUISITIONPRICE TYPE STRING,
PURREQNITEMTOTALAMOUNT TYPE STRING,
PURREQNPRICEQUANTITY TYPE STRING,
MATERIAL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CPREQITMBYPURORD_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_CPREQITMBYPURORD_STR-MANDT sy-vline 
WA_CPREQITMBYPURORD_STR-PURCHASEREQUISITION sy-vline 
WA_CPREQITMBYPURORD_STR-PURCHASEREQUISITIONITEM sy-vline 
WA_CPREQITMBYPURORD_STR-PURCHASEORDER sy-vline 
WA_CPREQITMBYPURORD_STR-PURCHASEREQUISITIONTYPE sy-vline 
WA_CPREQITMBYPURORD_STR-PLANT sy-vline 
WA_CPREQITMBYPURORD_STR-PURCHASINGORGANIZATION sy-vline 
WA_CPREQITMBYPURORD_STR-PURCHASINGGROUP sy-vline 
WA_CPREQITMBYPURORD_STR-PURCHASEREQUISITIONITEMTEXT sy-vline 
WA_CPREQITMBYPURORD_STR-MATERIALGROUP sy-vline 
WA_CPREQITMBYPURORD_STR-DELIVERYDATE sy-vline 
WA_CPREQITMBYPURORD_STR-REQUESTEDQUANTITY sy-vline 
WA_CPREQITMBYPURORD_STR-BASEUNIT sy-vline 
WA_CPREQITMBYPURORD_STR-PURREQNITEMCURRENCY sy-vline 
WA_CPREQITMBYPURORD_STR-PURCHASEREQUISITIONPRICE sy-vline 
WA_CPREQITMBYPURORD_STR-PURREQNITEMTOTALAMOUNT sy-vline 
WA_CPREQITMBYPURORD_STR-PURREQNPRICEQUANTITY sy-vline 
WA_CPREQITMBYPURORD_STR-MATERIAL sy-vline      INTO ld_text SEPARATED BY SPACE.

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