ABAP Select data from SAP table CAGBUITEMQTY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CAGBUITEMQTY
*  INTO TABLE @DATA(IT_CAGBUITEMQTY2).
*--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_CAGBUITEMQTY INDEX 1 INTO DATA(WA_CAGBUITEMQTY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CAGBUITEMQTY>-MANDT = 1.
<CAGBUITEMQTY>-AGENCYBUSINESSDOCUMENT = 1.
<CAGBUITEMQTY>-AGENCYBUSINESSITEM = 1.
<CAGBUITEMQTY>-MATERIAL = 1.
<CAGBUITEMQTY>-AGBUITEMQTYTOBASEQTYNMRTR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CAGBUITEMQTY-AGBUITEMQTYTOBASEQTYDNMNTR, sy-vline,
  WA_CAGBUITEMQTY-AGBUITEMQUANTITYUNIT, sy-vline,
  WA_CAGBUITEMQTY-BASEUNIT, sy-vline,
  WA_CAGBUITEMQTY-AGENCYBUSINESSDOCUMENTCURRENCY, sy-vline,
  WA_CAGBUITEMQTY-AGENCYBUSINESSITEMQUANTITY, sy-vline,
  WA_CAGBUITEMQTY-AGBUITEMQUANTITYINBASEUNIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CAGBUITEMQTY 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_CAGBUITEMQTY 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_CAGBUITEMQTY INTO WA_CAGBUITEMQTY.


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

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

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

*Conversion exit CUNIT, internal->external for field BASEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CAGBUITEMQTY-BASEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CAGBUITEMQTY-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_CAGBUITEMQTY_STR, 
MANDT TYPE STRING,
AGENCYBUSINESSDOCUMENT TYPE STRING,
AGENCYBUSINESSITEM TYPE STRING,
MATERIAL TYPE STRING,
AGBUITEMQTYTOBASEQTYNMRTR TYPE STRING,
AGBUITEMQTYTOBASEQTYDNMNTR TYPE STRING,
AGBUITEMQUANTITYUNIT TYPE STRING,
BASEUNIT TYPE STRING,
AGENCYBUSINESSDOCUMENTCURRENCY TYPE STRING,
AGENCYBUSINESSITEMQUANTITY TYPE STRING,
AGBUITEMQUANTITYINBASEUNIT TYPE STRING,
ITEMNETAMOUNTOFAGBUDOC TYPE STRING,
CUSTRELITEMNETAMOUNTOFAGBUDOC TYPE STRING,
ITEMCAT TYPE STRING,
LFTYP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CAGBUITEMQTY_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_CAGBUITEMQTY_STR-MANDT sy-vline 
WA_CAGBUITEMQTY_STR-AGENCYBUSINESSDOCUMENT sy-vline 
WA_CAGBUITEMQTY_STR-AGENCYBUSINESSITEM sy-vline 
WA_CAGBUITEMQTY_STR-MATERIAL sy-vline 
WA_CAGBUITEMQTY_STR-AGBUITEMQTYTOBASEQTYNMRTR sy-vline 
WA_CAGBUITEMQTY_STR-AGBUITEMQTYTOBASEQTYDNMNTR sy-vline 
WA_CAGBUITEMQTY_STR-AGBUITEMQUANTITYUNIT sy-vline 
WA_CAGBUITEMQTY_STR-BASEUNIT sy-vline 
WA_CAGBUITEMQTY_STR-AGENCYBUSINESSDOCUMENTCURRENCY sy-vline 
WA_CAGBUITEMQTY_STR-AGENCYBUSINESSITEMQUANTITY sy-vline 
WA_CAGBUITEMQTY_STR-AGBUITEMQUANTITYINBASEUNIT sy-vline 
WA_CAGBUITEMQTY_STR-ITEMNETAMOUNTOFAGBUDOC sy-vline 
WA_CAGBUITEMQTY_STR-CUSTRELITEMNETAMOUNTOFAGBUDOC sy-vline 
WA_CAGBUITEMQTY_STR-ITEMCAT sy-vline 
WA_CAGBUITEMQTY_STR-LFTYP sy-vline      INTO ld_text SEPARATED BY SPACE.

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