ABAP Select data from SAP table CPRAMP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CPRAMP
*  INTO TABLE @DATA(IT_CPRAMP2).
*--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_CPRAMP INDEX 1 INTO DATA(WA_CPRAMP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CPRAMP>-MANDT = 1.
<CPRAMP>-PURREQNALGNMTRUNUUID = 1.
<CPRAMP>-LOGHANDLE = 1.
<CPRAMP>-PRODUCT = 1.
<CPRAMP>-PRODUCTNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CPRAMP-PRODUCTCATEGORY, sy-vline,
  WA_CPRAMP-PRODUCTCATEGORYNAME, sy-vline,
  WA_CPRAMP-NUMBEROFPURCHASEREQITEMS, sy-vline,
  WA_CPRAMP-NMBROFPURREQNITEMSALGNMTPRPSL, sy-vline,
  WA_CPRAMP-NMBROFALIGNEDPURCHASEREQNITEMS, sy-vline,
  WA_CPRAMP-REQUESTEDQUANTITY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CPRAMP 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_CPRAMP 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_CPRAMP INTO WA_CPRAMP.


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

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

*Conversion exit CUNIT, internal->external for field ALIGNEDPURORDITEMBASEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CPRAMP-ALIGNEDPURORDITEMBASEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CPRAMP-ALIGNEDPURORDITEMBASEUNIT.
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_CPRAMP_STR, 
MANDT TYPE STRING,
PURREQNALGNMTRUNUUID TYPE STRING,
LOGHANDLE TYPE STRING,
PRODUCT TYPE STRING,
PRODUCTNAME TYPE STRING,
PRODUCTCATEGORY TYPE STRING,
PRODUCTCATEGORYNAME TYPE STRING,
NUMBEROFPURCHASEREQITEMS TYPE STRING,
NMBROFPURREQNITEMSALGNMTPRPSL TYPE STRING,
NMBROFALIGNEDPURCHASEREQNITEMS TYPE STRING,
REQUESTEDQUANTITY TYPE STRING,
PURCHASEREQUISITIONUNIT TYPE STRING,
ALIGNEDPURORDITMQTYINBASEUOM TYPE STRING,
ALIGNEDPURORDITEMBASEUNIT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CPRAMP_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_CPRAMP_STR-MANDT sy-vline 
WA_CPRAMP_STR-PURREQNALGNMTRUNUUID sy-vline 
WA_CPRAMP_STR-LOGHANDLE sy-vline 
WA_CPRAMP_STR-PRODUCT sy-vline 
WA_CPRAMP_STR-PRODUCTNAME sy-vline 
WA_CPRAMP_STR-PRODUCTCATEGORY sy-vline 
WA_CPRAMP_STR-PRODUCTCATEGORYNAME sy-vline 
WA_CPRAMP_STR-NUMBEROFPURCHASEREQITEMS sy-vline 
WA_CPRAMP_STR-NMBROFPURREQNITEMSALGNMTPRPSL sy-vline 
WA_CPRAMP_STR-NMBROFALIGNEDPURCHASEREQNITEMS sy-vline 
WA_CPRAMP_STR-REQUESTEDQUANTITY sy-vline 
WA_CPRAMP_STR-PURCHASEREQUISITIONUNIT sy-vline 
WA_CPRAMP_STR-ALIGNEDPURORDITMQTYINBASEUOM sy-vline 
WA_CPRAMP_STR-ALIGNEDPURORDITEMBASEUNIT sy-vline      INTO ld_text SEPARATED BY SPACE.

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