ABAP Select data from SAP table AVIXCITIRE2MIGR into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP AVIXCITIRE2MIGR 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 AVIXCITIRE2MIGR. 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 AVIXCITIRE2MIGR 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_AVIXCITIRE2MIGR TYPE STANDARD TABLE OF AVIXCITIRE2MIGR,
      WA_AVIXCITIRE2MIGR TYPE AVIXCITIRE2MIGR,
      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: <AVIXCITIRE2MIGR> TYPE AVIXCITIRE2MIGR.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_AVIXCITIRE2MIGR.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM AVIXCITIRE2MIGR
  INTO TABLE IT_AVIXCITIRE2MIGR.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM AVIXCITIRE2MIGR
*  INTO TABLE @DATA(IT_AVIXCITIRE2MIGR2).
*--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_AVIXCITIRE2MIGR INDEX 1 INTO DATA(WA_AVIXCITIRE2MIGR2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_AVIXCITIRE2MIGR ASSIGNING <AVIXCITIRE2MIGR>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<AVIXCITIRE2MIGR>-MANDT = 1.
<AVIXCITIRE2MIGR>-MIGRLEVEL = 1.
<AVIXCITIRE2MIGR>-BUKRS = 1.
<AVIXCITIRE2MIGR>-RECNNR = 1.
<AVIXCITIRE2MIGR>-ISMIGRATED = 1.

ENDLOOP.

LOOP AT IT_AVIXCITIRE2MIGR INTO WA_AVIXCITIRE2MIGR.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_AVIXCITIRE2MIGR-RERF, sy-vline,
  WA_AVIXCITIRE2MIGR-DERF, sy-vline,
  WA_AVIXCITIRE2MIGR-TERF, sy-vline,
  WA_AVIXCITIRE2MIGR-REHER, sy-vline,
  WA_AVIXCITIRE2MIGR-RBEAR, sy-vline,
  WA_AVIXCITIRE2MIGR-DBEAR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_AVIXCITIRE2MIGR 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_AVIXCITIRE2MIGR 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_AVIXCITIRE2MIGR INTO WA_AVIXCITIRE2MIGR.


*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 RECNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_AVIXCITIRE2MIGR-RECNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AVIXCITIRE2MIGR-RECNNR.
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_AVIXCITIRE2MIGR_STR, 
MANDT TYPE STRING,
MIGRLEVEL TYPE STRING,
BUKRS TYPE STRING,
RECNNR TYPE STRING,
ISMIGRATED TYPE STRING,
RERF TYPE STRING,
DERF TYPE STRING,
TERF TYPE STRING,
REHER TYPE STRING,
RBEAR TYPE STRING,
DBEAR TYPE STRING,
TBEAR TYPE STRING,
RBHER TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_AVIXCITIRE2MIGR_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_AVIXCITIRE2MIGR_STR-MANDT sy-vline 
WA_AVIXCITIRE2MIGR_STR-MIGRLEVEL sy-vline 
WA_AVIXCITIRE2MIGR_STR-BUKRS sy-vline 
WA_AVIXCITIRE2MIGR_STR-RECNNR sy-vline 
WA_AVIXCITIRE2MIGR_STR-ISMIGRATED sy-vline 
WA_AVIXCITIRE2MIGR_STR-RERF sy-vline 
WA_AVIXCITIRE2MIGR_STR-DERF sy-vline 
WA_AVIXCITIRE2MIGR_STR-TERF sy-vline 
WA_AVIXCITIRE2MIGR_STR-REHER sy-vline 
WA_AVIXCITIRE2MIGR_STR-RBEAR sy-vline 
WA_AVIXCITIRE2MIGR_STR-DBEAR sy-vline 
WA_AVIXCITIRE2MIGR_STR-TBEAR sy-vline 
WA_AVIXCITIRE2MIGR_STR-RBHER sy-vline 
WA_AVIXCITIRE2MIGR_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.