ABAP Select data from SAP table AVIKOKO into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM AVIKOKO
*  INTO TABLE @DATA(IT_AVIKOKO2).
*--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_AVIKOKO INDEX 1 INTO DATA(WA_AVIKOKO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<AVIKOKO>-MANDT = 1.
<AVIKOKO>-BUKRS = 1.
<AVIKOKO>-SANLF = 1.
<AVIKOKO>-RKEY1 = 1.
<AVIKOKO>-RKEY2 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_AVIKOKO-RKEY3, sy-vline,
  WA_AVIKOKO-DGUEL_KK, sy-vline,
  WA_AVIKOKO-NLFD_ANG, sy-vline,
  WA_AVIKOKO-SSTATI, sy-vline,
  WA_AVIKOKO-SINKASSO, sy-vline,
  WA_AVIKOKO-SWHRKOND, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_AVIKOKO 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_AVIKOKO 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_AVIKOKO INTO WA_AVIKOKO.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_AVIKOKO_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
SANLF TYPE STRING,
RKEY1 TYPE STRING,
RKEY2 TYPE STRING,
RKEY3 TYPE STRING,
DGUEL_KK TYPE STRING,
NLFD_ANG TYPE STRING,
SSTATI TYPE STRING,
SINKASSO TYPE STRING,
SWHRKOND TYPE STRING,
AMMRHY TYPE STRING,
JPROR TYPE STRING,
SFART TYPE STRING,
SZAWS TYPE STRING,
MWSKZ TYPE STRING,
DMIEND TYPE STRING,
JLASTOP TYPE STRING,
DLSTSP TYPE STRING,
ZLSCH TYPE STRING,
SVSTSOND TYPE STRING,
JBMONAT TYPE STRING,
JVSTOPT TYPE STRING,
GZLSCH TYPE STRING,
SZEITANT TYPE STRING,
SZBMETH TYPE STRING,
TXJCD TYPE STRING,
SFKALRI TYPE STRING,
ATTRHY TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_AVIKOKO_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_AVIKOKO_STR-MANDT sy-vline 
WA_AVIKOKO_STR-BUKRS sy-vline 
WA_AVIKOKO_STR-SANLF sy-vline 
WA_AVIKOKO_STR-RKEY1 sy-vline 
WA_AVIKOKO_STR-RKEY2 sy-vline 
WA_AVIKOKO_STR-RKEY3 sy-vline 
WA_AVIKOKO_STR-DGUEL_KK sy-vline 
WA_AVIKOKO_STR-NLFD_ANG sy-vline 
WA_AVIKOKO_STR-SSTATI sy-vline 
WA_AVIKOKO_STR-SINKASSO sy-vline 
WA_AVIKOKO_STR-SWHRKOND sy-vline 
WA_AVIKOKO_STR-AMMRHY sy-vline 
WA_AVIKOKO_STR-JPROR sy-vline 
WA_AVIKOKO_STR-SFART sy-vline 
WA_AVIKOKO_STR-SZAWS sy-vline 
WA_AVIKOKO_STR-MWSKZ sy-vline 
WA_AVIKOKO_STR-DMIEND sy-vline 
WA_AVIKOKO_STR-JLASTOP sy-vline 
WA_AVIKOKO_STR-DLSTSP sy-vline 
WA_AVIKOKO_STR-ZLSCH sy-vline 
WA_AVIKOKO_STR-SVSTSOND sy-vline 
WA_AVIKOKO_STR-JBMONAT sy-vline 
WA_AVIKOKO_STR-JVSTOPT sy-vline 
WA_AVIKOKO_STR-GZLSCH sy-vline 
WA_AVIKOKO_STR-SZEITANT sy-vline 
WA_AVIKOKO_STR-SZBMETH sy-vline 
WA_AVIKOKO_STR-TXJCD sy-vline 
WA_AVIKOKO_STR-SFKALRI sy-vline 
WA_AVIKOKO_STR-ATTRHY sy-vline 
WA_AVIKOKO_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.