ABAP Select data from SAP table CNV_40305_T095B 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_T095B 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_T095B. 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_T095B 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_T095B TYPE STANDARD TABLE OF CNV_40305_T095B,
      WA_CNV_40305_T095B TYPE CNV_40305_T095B,
      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_T095B> TYPE CNV_40305_T095B.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CNV_40305_T095B.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CNV_40305_T095B
  INTO TABLE IT_CNV_40305_T095B.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CNV_40305_T095B
*  INTO TABLE @DATA(IT_CNV_40305_T095B2).
*--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_T095B INDEX 1 INTO DATA(WA_CNV_40305_T095B2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CNV_40305_T095B ASSIGNING <CNV_40305_T095B>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CNV_40305_T095B>-MANDT = 1.
<CNV_40305_T095B>-PACKID = 1.
<CNV_40305_T095B>-KTOPL = 1.
<CNV_40305_T095B>-KTOGR = 1.
<CNV_40305_T095B>-AFABE = 1.

ENDLOOP.

LOOP AT IT_CNV_40305_T095B INTO WA_CNV_40305_T095B.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CNV_40305_T095B-KTNAFB, sy-vline,
  WA_CNV_40305_T095B-KTNAFG, sy-vline,
  WA_CNV_40305_T095B-KTNAFU, sy-vline,
  WA_CNV_40305_T095B-KTSAFB, sy-vline,
  WA_CNV_40305_T095B-KTSAFG, sy-vline,
  WA_CNV_40305_T095B-KTSAFU, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CNV_40305_T095B 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_T095B 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_T095B INTO WA_CNV_40305_T095B.


*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 KTOGR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNV_40305_T095B-KTOGR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNV_40305_T095B-KTOGR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KTNAFB
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNV_40305_T095B-KTNAFB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNV_40305_T095B-KTNAFB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KTNAFG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNV_40305_T095B-KTNAFG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNV_40305_T095B-KTNAFG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KTNAFU
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNV_40305_T095B-KTNAFU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNV_40305_T095B-KTNAFU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KTSAFB
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNV_40305_T095B-KTSAFB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNV_40305_T095B-KTSAFB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KTSAFG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNV_40305_T095B-KTSAFG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNV_40305_T095B-KTSAFG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KTSAFU
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNV_40305_T095B-KTSAFU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNV_40305_T095B-KTSAFU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KTAAFB
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNV_40305_T095B-KTAAFB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNV_40305_T095B-KTAAFB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KTAAFG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNV_40305_T095B-KTAAFG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNV_40305_T095B-KTAAFG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KTAAFU
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNV_40305_T095B-KTAAFU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNV_40305_T095B-KTAAFU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KTZINB
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNV_40305_T095B-KTZINB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNV_40305_T095B-KTZINB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KTZING
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNV_40305_T095B-KTZING
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNV_40305_T095B-KTZING.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KTZINU
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNV_40305_T095B-KTZINU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNV_40305_T095B-KTZINU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KTMAFB
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNV_40305_T095B-KTMAFB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNV_40305_T095B-KTMAFB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KTMAFG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNV_40305_T095B-KTMAFG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNV_40305_T095B-KTMAFG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KTAUNB
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNV_40305_T095B-KTAUNB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNV_40305_T095B-KTAUNB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KTAUNG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNV_40305_T095B-KTAUNG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNV_40305_T095B-KTAUNG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KTNZUS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNV_40305_T095B-KTNZUS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNV_40305_T095B-KTNZUS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KTSZUS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNV_40305_T095B-KTSZUS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNV_40305_T095B-KTSZUS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KTAZUS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNV_40305_T095B-KTAZUS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNV_40305_T095B-KTAZUS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KTMZUS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNV_40305_T095B-KTMZUS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNV_40305_T095B-KTMZUS.
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_T095B_STR, 
MANDT TYPE STRING,
PACKID TYPE STRING,
KTOPL TYPE STRING,
KTOGR TYPE STRING,
AFABE TYPE STRING,
KTNAFB TYPE STRING,
KTNAFG TYPE STRING,
KTNAFU TYPE STRING,
KTSAFB TYPE STRING,
KTSAFG TYPE STRING,
KTSAFU TYPE STRING,
KTAAFB TYPE STRING,
KTAAFG TYPE STRING,
KTAAFU TYPE STRING,
KTZINB TYPE STRING,
KTZING TYPE STRING,
KTZINU TYPE STRING,
KTMAFB TYPE STRING,
KTMAFG TYPE STRING,
KTAUNB TYPE STRING,
KTAUNG TYPE STRING,
KTNZUS TYPE STRING,
KTSZUS TYPE STRING,
KTAZUS TYPE STRING,
KTMZUS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CNV_40305_T095B_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_T095B_STR-MANDT sy-vline 
WA_CNV_40305_T095B_STR-PACKID sy-vline 
WA_CNV_40305_T095B_STR-KTOPL sy-vline 
WA_CNV_40305_T095B_STR-KTOGR sy-vline 
WA_CNV_40305_T095B_STR-AFABE sy-vline 
WA_CNV_40305_T095B_STR-KTNAFB sy-vline 
WA_CNV_40305_T095B_STR-KTNAFG sy-vline 
WA_CNV_40305_T095B_STR-KTNAFU sy-vline 
WA_CNV_40305_T095B_STR-KTSAFB sy-vline 
WA_CNV_40305_T095B_STR-KTSAFG sy-vline 
WA_CNV_40305_T095B_STR-KTSAFU sy-vline 
WA_CNV_40305_T095B_STR-KTAAFB sy-vline 
WA_CNV_40305_T095B_STR-KTAAFG sy-vline 
WA_CNV_40305_T095B_STR-KTAAFU sy-vline 
WA_CNV_40305_T095B_STR-KTZINB sy-vline 
WA_CNV_40305_T095B_STR-KTZING sy-vline 
WA_CNV_40305_T095B_STR-KTZINU sy-vline 
WA_CNV_40305_T095B_STR-KTMAFB sy-vline 
WA_CNV_40305_T095B_STR-KTMAFG sy-vline 
WA_CNV_40305_T095B_STR-KTAUNB sy-vline 
WA_CNV_40305_T095B_STR-KTAUNG sy-vline 
WA_CNV_40305_T095B_STR-KTNZUS sy-vline 
WA_CNV_40305_T095B_STR-KTSZUS sy-vline 
WA_CNV_40305_T095B_STR-KTAZUS sy-vline 
WA_CNV_40305_T095B_STR-KTMZUS sy-vline      INTO ld_text SEPARATED BY SPACE.

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