ABAP Select data from SAP table CCUSTINVCITQTY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CCUSTINVCITQTY
*  INTO TABLE @DATA(IT_CCUSTINVCITQTY2).
*--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_CCUSTINVCITQTY INDEX 1 INTO DATA(WA_CCUSTINVCITQTY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CCUSTINVCITQTY>-MANDT = 1.
<CCUSTINVCITQTY>-BILLINGDOCUMENT = 1.
<CCUSTINVCITQTY>-BILLINGDOCUMENTITEM = 1.
<CCUSTINVCITQTY>-MATERIAL = 1.
<CCUSTINVCITQTY>-BILLINGTOBASEQUANTITYNMRTR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CCUSTINVCITQTY-BILLINGTOBASEQUANTITYDNMNTR, sy-vline,
  WA_CCUSTINVCITQTY-BILLINGQUANTITYUNIT, sy-vline,
  WA_CCUSTINVCITQTY-BASEUNIT, sy-vline,
  WA_CCUSTINVCITQTY-BILLINGDOCUMENTCURRENCY, sy-vline,
  WA_CCUSTINVCITQTY-BILLINGQUANTITY, sy-vline,
  WA_CCUSTINVCITQTY-BILLINGQUANTITYINBASEUNIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CCUSTINVCITQTY 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_CCUSTINVCITQTY 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_CCUSTINVCITQTY INTO WA_CCUSTINVCITQTY.


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

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

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

*Conversion exit CUNIT, internal->external for field BASEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CCUSTINVCITQTY-BASEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CCUSTINVCITQTY-BASEUNIT.
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_CCUSTINVCITQTY_STR, 
MANDT TYPE STRING,
BILLINGDOCUMENT TYPE STRING,
BILLINGDOCUMENTITEM TYPE STRING,
MATERIAL TYPE STRING,
BILLINGTOBASEQUANTITYNMRTR TYPE STRING,
BILLINGTOBASEQUANTITYDNMNTR TYPE STRING,
BILLINGQUANTITYUNIT TYPE STRING,
BASEUNIT TYPE STRING,
BILLINGDOCUMENTCURRENCY TYPE STRING,
BILLINGQUANTITY TYPE STRING,
BILLINGQUANTITYINBASEUNIT TYPE STRING,
ITEMNETAMOUNTOFBILLINGDOC TYPE STRING,
SHKZG TYPE STRING,
VBTYP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CCUSTINVCITQTY_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_CCUSTINVCITQTY_STR-MANDT sy-vline 
WA_CCUSTINVCITQTY_STR-BILLINGDOCUMENT sy-vline 
WA_CCUSTINVCITQTY_STR-BILLINGDOCUMENTITEM sy-vline 
WA_CCUSTINVCITQTY_STR-MATERIAL sy-vline 
WA_CCUSTINVCITQTY_STR-BILLINGTOBASEQUANTITYNMRTR sy-vline 
WA_CCUSTINVCITQTY_STR-BILLINGTOBASEQUANTITYDNMNTR sy-vline 
WA_CCUSTINVCITQTY_STR-BILLINGQUANTITYUNIT sy-vline 
WA_CCUSTINVCITQTY_STR-BASEUNIT sy-vline 
WA_CCUSTINVCITQTY_STR-BILLINGDOCUMENTCURRENCY sy-vline 
WA_CCUSTINVCITQTY_STR-BILLINGQUANTITY sy-vline 
WA_CCUSTINVCITQTY_STR-BILLINGQUANTITYINBASEUNIT sy-vline 
WA_CCUSTINVCITQTY_STR-ITEMNETAMOUNTOFBILLINGDOC sy-vline 
WA_CCUSTINVCITQTY_STR-SHKZG sy-vline 
WA_CCUSTINVCITQTY_STR-VBTYP sy-vline      INTO ld_text SEPARATED BY SPACE.

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