ABAP Select data from SAP table AVIMIMAPCNNR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM AVIMIMAPCNNR
*  INTO TABLE @DATA(IT_AVIMIMAPCNNR2).
*--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_AVIMIMAPCNNR INDEX 1 INTO DATA(WA_AVIMIMAPCNNR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<AVIMIMAPCNNR>-MANDT = 1.
<AVIMIMAPCNNR>-CNCATE = 1.
<AVIMIMAPCNNR>-BUKRS = 1.
<AVIMIMAPCNNR>-RECNNROLD = 1.
<AVIMIMAPCNNR>-INTRENO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_AVIMIMAPCNNR-OBJNR, sy-vline,
  WA_AVIMIMAPCNNR-IMKEY, sy-vline,
  WA_AVIMIMAPCNNR-E_SMIVE, sy-vline,
  WA_AVIMIMAPCNNR-RECNNRNEW, sy-vline,
  WA_AVIMIMAPCNNR-CNMERGEIND, sy-vline,
  WA_AVIMIMAPCNNR-VALIDFROM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_AVIMIMAPCNNR 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_AVIMIMAPCNNR 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_AVIMIMAPCNNR INTO WA_AVIMIMAPCNNR.


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

*Conversion exit IMKEY, internal->external for field IMKEY
CALL FUNCTION 'CONVERSION_EXIT_IMKEY_OUTPUT'
  EXPORTING
    input =                      WA_AVIMIMAPCNNR-IMKEY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AVIMIMAPCNNR-IMKEY.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit REDAT, internal->external for field VALIDTO
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_AVIMIMAPCNNR-VALIDTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AVIMIMAPCNNR-VALIDTO.
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_AVIMIMAPCNNR_STR, 
MANDT TYPE STRING,
CNCATE TYPE STRING,
BUKRS TYPE STRING,
RECNNROLD TYPE STRING,
INTRENO TYPE STRING,
OBJNR TYPE STRING,
IMKEY TYPE STRING,
E_SMIVE TYPE STRING,
RECNNRNEW TYPE STRING,
CNMERGEIND TYPE STRING,
VALIDFROM TYPE STRING,
VALIDTO TYPE STRING,
GETRENEWAL TYPE STRING,
JLOESCH TYPE STRING,
RECNNOTPER TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_AVIMIMAPCNNR_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_AVIMIMAPCNNR_STR-MANDT sy-vline 
WA_AVIMIMAPCNNR_STR-CNCATE sy-vline 
WA_AVIMIMAPCNNR_STR-BUKRS sy-vline 
WA_AVIMIMAPCNNR_STR-RECNNROLD sy-vline 
WA_AVIMIMAPCNNR_STR-INTRENO sy-vline 
WA_AVIMIMAPCNNR_STR-OBJNR sy-vline 
WA_AVIMIMAPCNNR_STR-IMKEY sy-vline 
WA_AVIMIMAPCNNR_STR-E_SMIVE sy-vline 
WA_AVIMIMAPCNNR_STR-RECNNRNEW sy-vline 
WA_AVIMIMAPCNNR_STR-CNMERGEIND sy-vline 
WA_AVIMIMAPCNNR_STR-VALIDFROM sy-vline 
WA_AVIMIMAPCNNR_STR-VALIDTO sy-vline 
WA_AVIMIMAPCNNR_STR-GETRENEWAL sy-vline 
WA_AVIMIMAPCNNR_STR-JLOESCH sy-vline 
WA_AVIMIMAPCNNR_STR-RECNNOTPER sy-vline 
WA_AVIMIMAPCNNR_STR-KZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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