ABAP Select data from SAP table QCPR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM QCPR
*  INTO TABLE @DATA(IT_QCPR2).
*--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_QCPR INDEX 1 INTO DATA(WA_QCPR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<QCPR>-MANDT = 1.
<QCPR>-CERTNO = 1.
<QCPR>-ZGTYP = 1.
<QCPR>-EBELN = 1.
<QCPR>-EBELP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_QCPR-MATNR, sy-vline,
  WA_QCPR-WERKS, sy-vline,
  WA_QCPR-CHARG, sy-vline,
  WA_QCPR-LICHN, sy-vline,
  WA_QCPR-LFSNR, sy-vline,
  WA_QCPR-LIFNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_QCPR 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_QCPR 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_QCPR INTO WA_QCPR.


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

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

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

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

*Conversion exit GJAHR, internal->external for field MJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_QCPR-MJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QCPR-MJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MBLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_QCPR-MBLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QCPR-MBLNR.
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_QCPR_STR, 
MANDT TYPE STRING,
CERTNO TYPE STRING,
ZGTYP TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
CHARG TYPE STRING,
LICHN TYPE STRING,
LFSNR TYPE STRING,
LIFNR TYPE STRING,
HERSTELLER TYPE STRING,
MJAHR TYPE STRING,
MBLNR TYPE STRING,
ZEILE TYPE STRING,
BUDAT TYPE STRING,
STATUS TYPE STRING,
REMDAT TYPE STRING,
ESCDAT TYPE STRING,
CERTDAT TYPE STRING,
CERTREC TYPE STRING,
ERSTELLER TYPE STRING,
ERSTELDAT TYPE STRING,
ERSTELZEIT TYPE STRING,
AENDERER TYPE STRING,
AENDERDAT TYPE STRING,
AENDERZEIT TYPE STRING,
CVP_XBLCK TYPE STRING,
CHANGEDDATETIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_QCPR_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_QCPR_STR-MANDT sy-vline 
WA_QCPR_STR-CERTNO sy-vline 
WA_QCPR_STR-ZGTYP sy-vline 
WA_QCPR_STR-EBELN sy-vline 
WA_QCPR_STR-EBELP sy-vline 
WA_QCPR_STR-MATNR sy-vline 
WA_QCPR_STR-WERKS sy-vline 
WA_QCPR_STR-CHARG sy-vline 
WA_QCPR_STR-LICHN sy-vline 
WA_QCPR_STR-LFSNR sy-vline 
WA_QCPR_STR-LIFNR sy-vline 
WA_QCPR_STR-HERSTELLER sy-vline 
WA_QCPR_STR-MJAHR sy-vline 
WA_QCPR_STR-MBLNR sy-vline 
WA_QCPR_STR-ZEILE sy-vline 
WA_QCPR_STR-BUDAT sy-vline 
WA_QCPR_STR-STATUS sy-vline 
WA_QCPR_STR-REMDAT sy-vline 
WA_QCPR_STR-ESCDAT sy-vline 
WA_QCPR_STR-CERTDAT sy-vline 
WA_QCPR_STR-CERTREC sy-vline 
WA_QCPR_STR-ERSTELLER sy-vline 
WA_QCPR_STR-ERSTELDAT sy-vline 
WA_QCPR_STR-ERSTELZEIT sy-vline 
WA_QCPR_STR-AENDERER sy-vline 
WA_QCPR_STR-AENDERDAT sy-vline 
WA_QCPR_STR-AENDERZEIT sy-vline 
WA_QCPR_STR-CVP_XBLCK sy-vline 
WA_QCPR_STR-CHANGEDDATETIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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