ABAP Select data from SAP table CACS00_INV into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CACS00_INV 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 CACS00_INV. 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 CACS00_INV 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_CACS00_INV TYPE STANDARD TABLE OF CACS00_INV,
      WA_CACS00_INV TYPE CACS00_INV,
      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: <CACS00_INV> TYPE CACS00_INV.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CACS00_INV.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CACS00_INV
  INTO TABLE IT_CACS00_INV.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CACS00_INV
*  INTO TABLE @DATA(IT_CACS00_INV2).
*--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_CACS00_INV INDEX 1 INTO DATA(WA_CACS00_INV2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CACS00_INV ASSIGNING <CACS00_INV>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CACS00_INV>-MANDT = 1.
<CACS00_INV>-IMPORT_YEAR = 1.
<CACS00_INV>-CASE_ID = 1.
<CACS00_INV>-CASE_VERS = 1.
<CACS00_INV>-PART_POS = 1.

ENDLOOP.

LOOP AT IT_CACS00_INV INTO WA_CACS00_INV.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CACS00_INV-INV_POS, sy-vline,
  WA_CACS00_INV-FLG_CANCEL_OBJ, sy-vline,
  WA_CACS00_INV-FLG_CANCEL_VERS, sy-vline,
  WA_CACS00_INV-STATUS_VERSION, sy-vline,
  WA_CACS00_INV-STATUS_WORK, sy-vline,
  WA_CACS00_INV-CTRTBU_ID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CACS00_INV 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_CACS00_INV 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_CACS00_INV INTO WA_CACS00_INV.


*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 CASE_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CACS00_INV-CASE_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CACS00_INV-CASE_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PART_POS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CACS00_INV-PART_POS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CACS00_INV-PART_POS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field INV_POS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CACS00_INV-INV_POS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CACS00_INV-INV_POS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CTRTBU_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CACS00_INV-CTRTBU_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CACS00_INV-CTRTBU_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GPART
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CACS00_INV-GPART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CACS00_INV-GPART.
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_CACS00_INV_STR, 
MANDT TYPE STRING,
IMPORT_YEAR TYPE STRING,
CASE_ID TYPE STRING,
CASE_VERS TYPE STRING,
PART_POS TYPE STRING,
INV_POS TYPE STRING,
FLG_CANCEL_OBJ TYPE STRING,
FLG_CANCEL_VERS TYPE STRING,
STATUS_VERSION TYPE STRING,
STATUS_WORK TYPE STRING,
CTRTBU_ID TYPE STRING,
PD_OE_ID TYPE STRING,
GPART TYPE STRING,
ROLE TYPE STRING,
ROLE_COMMSHAR TYPE STRING,
ROLE_PRODSHAR TYPE STRING,
DISTRIBUTE TYPE STRING,
FLG_CONSTELL TYPE STRING,
FLG_REVERSED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CACS00_INV_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_CACS00_INV_STR-MANDT sy-vline 
WA_CACS00_INV_STR-IMPORT_YEAR sy-vline 
WA_CACS00_INV_STR-CASE_ID sy-vline 
WA_CACS00_INV_STR-CASE_VERS sy-vline 
WA_CACS00_INV_STR-PART_POS sy-vline 
WA_CACS00_INV_STR-INV_POS sy-vline 
WA_CACS00_INV_STR-FLG_CANCEL_OBJ sy-vline 
WA_CACS00_INV_STR-FLG_CANCEL_VERS sy-vline 
WA_CACS00_INV_STR-STATUS_VERSION sy-vline 
WA_CACS00_INV_STR-STATUS_WORK sy-vline 
WA_CACS00_INV_STR-CTRTBU_ID sy-vline 
WA_CACS00_INV_STR-PD_OE_ID sy-vline 
WA_CACS00_INV_STR-GPART sy-vline 
WA_CACS00_INV_STR-ROLE sy-vline 
WA_CACS00_INV_STR-ROLE_COMMSHAR sy-vline 
WA_CACS00_INV_STR-ROLE_PRODSHAR sy-vline 
WA_CACS00_INV_STR-DISTRIBUTE sy-vline 
WA_CACS00_INV_STR-FLG_CONSTELL sy-vline 
WA_CACS00_INV_STR-FLG_REVERSED sy-vline      INTO ld_text SEPARATED BY SPACE.

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