ABAP Select data from SAP table CPURREQHWFDLEML into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CPURREQHWFDLEML
*  INTO TABLE @DATA(IT_CPURREQHWFDLEML2).
*--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_CPURREQHWFDLEML INDEX 1 INTO DATA(WA_CPURREQHWFDLEML2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CPURREQHWFDLEML>-MANDT = 1.
<CPURREQHWFDLEML>-WORKFLOWTASKINTERNALID = 1.
<CPURREQHWFDLEML>-PURCHASEREQUISITION = 1.
<CPURREQHWFDLEML>-PURREQNRELEASESTATUS = 1.
<CPURREQHWFDLEML>-PURCHASEREQUISITIONTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CPURREQHWFDLEML-PURCHASEREQUISITIONITEMTEXT, sy-vline,
  WA_CPURREQHWFDLEML-PURCHASINGDOCUMENTCATEGORY, sy-vline,
  WA_CPURREQHWFDLEML-PURCHASINGORGANIZATION, sy-vline,
  WA_CPURREQHWFDLEML-PURCHASINGGROUP, sy-vline,
  WA_CPURREQHWFDLEML-PLANT, sy-vline,
  WA_CPURREQHWFDLEML-CREATIONDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CPURREQHWFDLEML 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_CPURREQHWFDLEML 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_CPURREQHWFDLEML INTO WA_CPURREQHWFDLEML.


*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_CPURREQHWFDLEML-PURCHASEREQUISITION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CPURREQHWFDLEML-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_CPURREQHWFDLEML_STR, 
MANDT TYPE STRING,
WORKFLOWTASKINTERNALID TYPE STRING,
PURCHASEREQUISITION TYPE STRING,
PURREQNRELEASESTATUS TYPE STRING,
PURCHASEREQUISITIONTYPE TYPE STRING,
PURCHASEREQUISITIONITEMTEXT TYPE STRING,
PURCHASINGDOCUMENTCATEGORY TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
PURCHASINGGROUP TYPE STRING,
PLANT TYPE STRING,
CREATIONDATE TYPE STRING,
REQUISITIONERNAME TYPE STRING,
CREATEDBYUSER TYPE STRING,
PURREQCREATIONDATE TYPE STRING,
PURREQNTOTALAMOUNTINDSPCRCY TYPE STRING,
DISPLAYCURRENCY TYPE STRING,
NUMBEROFITEMS TYPE STRING,
PURREQNWRKFLWTSKCRTNUTCDATE TYPE STRING,
PURREQNWRKFLWTSKCRTNUTCTIME TYPE STRING,
PURREQNWRKFLWTASKDUEUTCDATE TYPE STRING,
PURREQNWRKFLWTASKDUEUTCTIME TYPE STRING,
WORKFLOWTASKURL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CPURREQHWFDLEML_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_CPURREQHWFDLEML_STR-MANDT sy-vline 
WA_CPURREQHWFDLEML_STR-WORKFLOWTASKINTERNALID sy-vline 
WA_CPURREQHWFDLEML_STR-PURCHASEREQUISITION sy-vline 
WA_CPURREQHWFDLEML_STR-PURREQNRELEASESTATUS sy-vline 
WA_CPURREQHWFDLEML_STR-PURCHASEREQUISITIONTYPE sy-vline 
WA_CPURREQHWFDLEML_STR-PURCHASEREQUISITIONITEMTEXT sy-vline 
WA_CPURREQHWFDLEML_STR-PURCHASINGDOCUMENTCATEGORY sy-vline 
WA_CPURREQHWFDLEML_STR-PURCHASINGORGANIZATION sy-vline 
WA_CPURREQHWFDLEML_STR-PURCHASINGGROUP sy-vline 
WA_CPURREQHWFDLEML_STR-PLANT sy-vline 
WA_CPURREQHWFDLEML_STR-CREATIONDATE sy-vline 
WA_CPURREQHWFDLEML_STR-REQUISITIONERNAME sy-vline 
WA_CPURREQHWFDLEML_STR-CREATEDBYUSER sy-vline 
WA_CPURREQHWFDLEML_STR-PURREQCREATIONDATE sy-vline 
WA_CPURREQHWFDLEML_STR-PURREQNTOTALAMOUNTINDSPCRCY sy-vline 
WA_CPURREQHWFDLEML_STR-DISPLAYCURRENCY sy-vline 
WA_CPURREQHWFDLEML_STR-NUMBEROFITEMS sy-vline 
WA_CPURREQHWFDLEML_STR-PURREQNWRKFLWTSKCRTNUTCDATE sy-vline 
WA_CPURREQHWFDLEML_STR-PURREQNWRKFLWTSKCRTNUTCTIME sy-vline 
WA_CPURREQHWFDLEML_STR-PURREQNWRKFLWTASKDUEUTCDATE sy-vline 
WA_CPURREQHWFDLEML_STR-PURREQNWRKFLWTASKDUEUTCTIME sy-vline 
WA_CPURREQHWFDLEML_STR-WORKFLOWTASKURL sy-vline      INTO ld_text SEPARATED BY SPACE.

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