ABAP Select data from SAP table QCWWW_DELIVERY_LIST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM QCWWW_DELIVERY_LIST
*  INTO TABLE @DATA(IT_QCWWW_DELIVERY_LIST2).
*--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_QCWWW_DELIVERY_LIST INDEX 1 INTO DATA(WA_QCWWW_DELIVERY_LIST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<QCWWW_DELIVERY_LIST>-CLIENT = 1.
<QCWWW_DELIVERY_LIST>-DELIV_NUMB = 1.
<QCWWW_DELIVERY_LIST>-ITM_NUMBER = 1.
<QCWWW_DELIVERY_LIST>-OUTPUT_TYPE = 1.
<QCWWW_DELIVERY_LIST>-LANGU = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_QCWWW_DELIVERY_LIST-MSG_PARTNER, sy-vline,
  WA_QCWWW_DELIVERY_LIST-PARTNER_FUNCT, sy-vline,
  WA_QCWWW_DELIVERY_LIST-CREATION_DATE, sy-vline,
  WA_QCWWW_DELIVERY_LIST-CREATION_TIME, sy-vline,
  WA_QCWWW_DELIVERY_LIST-OUTPUT_ALLOWED, sy-vline,
  WA_QCWWW_DELIVERY_LIST-PURCH_NO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_QCWWW_DELIVERY_LIST 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_QCWWW_DELIVERY_LIST 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_QCWWW_DELIVERY_LIST INTO WA_QCWWW_DELIVERY_LIST.


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

*Conversion exit ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_QCWWW_DELIVERY_LIST-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QCWWW_DELIVERY_LIST-LANGU.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit MATN1, internal->external for field MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_QCWWW_DELIVERY_LIST-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QCWWW_DELIVERY_LIST-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_QCWWW_DELIVERY_LIST_STR, 
CLIENT TYPE STRING,
DELIV_NUMB TYPE STRING,
ITM_NUMBER TYPE STRING,
OUTPUT_TYPE TYPE STRING,
LANGU TYPE STRING,
MSG_PARTNER TYPE STRING,
PARTNER_FUNCT TYPE STRING,
CREATION_DATE TYPE STRING,
CREATION_TIME TYPE STRING,
OUTPUT_ALLOWED TYPE STRING,
PURCH_NO TYPE STRING,
PO_ITM_NO TYPE STRING,
PURCH_DATE TYPE STRING,
CUST_MAT TYPE STRING,
MATERIAL TYPE STRING,
SHORT_TEXT TYPE STRING,
FETCH_DATE TYPE STRING,
MSG_STATUS TYPE STRING,
RECIPIENT_NAME TYPE STRING,
TRANS_MEDIUM TYPE STRING,
OPTARCNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_QCWWW_DELIVERY_LIST_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_QCWWW_DELIVERY_LIST_STR-CLIENT sy-vline 
WA_QCWWW_DELIVERY_LIST_STR-DELIV_NUMB sy-vline 
WA_QCWWW_DELIVERY_LIST_STR-ITM_NUMBER sy-vline 
WA_QCWWW_DELIVERY_LIST_STR-OUTPUT_TYPE sy-vline 
WA_QCWWW_DELIVERY_LIST_STR-LANGU sy-vline 
WA_QCWWW_DELIVERY_LIST_STR-MSG_PARTNER sy-vline 
WA_QCWWW_DELIVERY_LIST_STR-PARTNER_FUNCT sy-vline 
WA_QCWWW_DELIVERY_LIST_STR-CREATION_DATE sy-vline 
WA_QCWWW_DELIVERY_LIST_STR-CREATION_TIME sy-vline 
WA_QCWWW_DELIVERY_LIST_STR-OUTPUT_ALLOWED sy-vline 
WA_QCWWW_DELIVERY_LIST_STR-PURCH_NO sy-vline 
WA_QCWWW_DELIVERY_LIST_STR-PO_ITM_NO sy-vline 
WA_QCWWW_DELIVERY_LIST_STR-PURCH_DATE sy-vline 
WA_QCWWW_DELIVERY_LIST_STR-CUST_MAT sy-vline 
WA_QCWWW_DELIVERY_LIST_STR-MATERIAL sy-vline 
WA_QCWWW_DELIVERY_LIST_STR-SHORT_TEXT sy-vline 
WA_QCWWW_DELIVERY_LIST_STR-FETCH_DATE sy-vline 
WA_QCWWW_DELIVERY_LIST_STR-MSG_STATUS sy-vline 
WA_QCWWW_DELIVERY_LIST_STR-RECIPIENT_NAME sy-vline 
WA_QCWWW_DELIVERY_LIST_STR-TRANS_MEDIUM sy-vline 
WA_QCWWW_DELIVERY_LIST_STR-OPTARCNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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