ABAP Select data from SAP table CNV_40305_ANKA_B into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CNV_40305_ANKA_B 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 CNV_40305_ANKA_B. 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 CNV_40305_ANKA_B 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_CNV_40305_ANKA_B TYPE STANDARD TABLE OF CNV_40305_ANKA_B,
      WA_CNV_40305_ANKA_B TYPE CNV_40305_ANKA_B,
      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: <CNV_40305_ANKA_B> TYPE CNV_40305_ANKA_B.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CNV_40305_ANKA_B.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CNV_40305_ANKA_B
  INTO TABLE IT_CNV_40305_ANKA_B.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CNV_40305_ANKA_B
*  INTO TABLE @DATA(IT_CNV_40305_ANKA_B2).
*--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_CNV_40305_ANKA_B INDEX 1 INTO DATA(WA_CNV_40305_ANKA_B2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CNV_40305_ANKA_B ASSIGNING <CNV_40305_ANKA_B>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CNV_40305_ANKA_B>-MANDT = 1.
<CNV_40305_ANKA_B>-PACKID = 1.
<CNV_40305_ANKA_B>-ANLKL = 1.
<CNV_40305_ANKA_B>-XOPVW = 1.
<CNV_40305_ANKA_B>-NUMKR = 1.

ENDLOOP.

LOOP AT IT_CNV_40305_ANKA_B INTO WA_CNV_40305_ANKA_B.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CNV_40305_ANKA_B-KTOGR, sy-vline,
  WA_CNV_40305_ANKA_B-FELEI, sy-vline,
  WA_CNV_40305_ANKA_B-XINVM, sy-vline,
  WA_CNV_40305_ANKA_B-AIMMO, sy-vline,
  WA_CNV_40305_ANKA_B-WERKS, sy-vline,
  WA_CNV_40305_ANKA_B-KOSTL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CNV_40305_ANKA_B 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_CNV_40305_ANKA_B 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_CNV_40305_ANKA_B INTO WA_CNV_40305_ANKA_B.


*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 ANLKL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNV_40305_ANKA_B-ANLKL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNV_40305_ANKA_B-ANLKL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KTOGR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNV_40305_ANKA_B-KTOGR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNV_40305_ANKA_B-KTOGR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNV_40305_ANKA_B-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNV_40305_ANKA_B-KOSTL.
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_CNV_40305_ANKA_B_STR, 
MANDT TYPE STRING,
PACKID TYPE STRING,
ANLKL TYPE STRING,
XOPVW TYPE STRING,
NUMKR TYPE STRING,
KTOGR TYPE STRING,
FELEI TYPE STRING,
XINVM TYPE STRING,
AIMMO TYPE STRING,
WERKS TYPE STRING,
KOSTL TYPE STRING,
LSTAR TYPE STRING,
XANLGR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CNV_40305_ANKA_B_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_CNV_40305_ANKA_B_STR-MANDT sy-vline 
WA_CNV_40305_ANKA_B_STR-PACKID sy-vline 
WA_CNV_40305_ANKA_B_STR-ANLKL sy-vline 
WA_CNV_40305_ANKA_B_STR-XOPVW sy-vline 
WA_CNV_40305_ANKA_B_STR-NUMKR sy-vline 
WA_CNV_40305_ANKA_B_STR-KTOGR sy-vline 
WA_CNV_40305_ANKA_B_STR-FELEI sy-vline 
WA_CNV_40305_ANKA_B_STR-XINVM sy-vline 
WA_CNV_40305_ANKA_B_STR-AIMMO sy-vline 
WA_CNV_40305_ANKA_B_STR-WERKS sy-vline 
WA_CNV_40305_ANKA_B_STR-KOSTL sy-vline 
WA_CNV_40305_ANKA_B_STR-LSTAR sy-vline 
WA_CNV_40305_ANKA_B_STR-XANLGR sy-vline      INTO ld_text SEPARATED BY SPACE.

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