ABAP Select data from SAP table FEB_HEADER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FEB_HEADER
*  INTO TABLE @DATA(IT_FEB_HEADER2).
*--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_FEB_HEADER INDEX 1 INTO DATA(WA_FEB_HEADER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FEB_HEADER>-BANKSTATEMENT = 1.
<FEB_HEADER>-BANKSTATEMENTPAGENUMBER = 1.
<FEB_HEADER>-BANKSTATEMENTDATE = 1.
<FEB_HEADER>-CURRENCY = 1.
<FEB_HEADER>-OPENINGBALANCEISINTERIM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FEB_HEADER-OPENINGBALANCEDEBITCREDITCODE, sy-vline,
  WA_FEB_HEADER-OPENINGBALANCEAMTINTRANSCRCY, sy-vline,
  WA_FEB_HEADER-TOTALDEBITAMOUNTINTRANSCRCY, sy-vline,
  WA_FEB_HEADER-TOTALCREDITAMOUNTINTRANSCRCY, sy-vline,
  WA_FEB_HEADER-CLOSINGBALANCEISINTERIM, sy-vline,
  WA_FEB_HEADER-CLOSINGBALANCEDEBITCREDITCODE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FEB_HEADER 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_FEB_HEADER 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_FEB_HEADER INTO WA_FEB_HEADER.


*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 AU172, internal->external for field OPENINGBALANCEAMTINTRANSCRCY
CALL FUNCTION 'CONVERSION_EXIT_AU172_OUTPUT'
  EXPORTING
    input =                      WA_FEB_HEADER-OPENINGBALANCEAMTINTRANSCRCY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FEB_HEADER-OPENINGBALANCEAMTINTRANSCRCY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU172, internal->external for field TOTALDEBITAMOUNTINTRANSCRCY
CALL FUNCTION 'CONVERSION_EXIT_AU172_OUTPUT'
  EXPORTING
    input =                      WA_FEB_HEADER-TOTALDEBITAMOUNTINTRANSCRCY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FEB_HEADER-TOTALDEBITAMOUNTINTRANSCRCY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU172, internal->external for field TOTALCREDITAMOUNTINTRANSCRCY
CALL FUNCTION 'CONVERSION_EXIT_AU172_OUTPUT'
  EXPORTING
    input =                      WA_FEB_HEADER-TOTALCREDITAMOUNTINTRANSCRCY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FEB_HEADER-TOTALCREDITAMOUNTINTRANSCRCY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU172, internal->external for field CLOSINGBALANCEAMTINTRANSCRCY
CALL FUNCTION 'CONVERSION_EXIT_AU172_OUTPUT'
  EXPORTING
    input =                      WA_FEB_HEADER-CLOSINGBALANCEAMTINTRANSCRCY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FEB_HEADER-CLOSINGBALANCEAMTINTRANSCRCY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU172, internal->external for field CLOSING_AVAILABLE_BALANCE
CALL FUNCTION 'CONVERSION_EXIT_AU172_OUTPUT'
  EXPORTING
    input =                      WA_FEB_HEADER-CLOSING_AVAILABLE_BALANCE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FEB_HEADER-CLOSING_AVAILABLE_BALANCE.
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_FEB_HEADER_STR, 
BANKSTATEMENT TYPE STRING,
BANKSTATEMENTPAGENUMBER TYPE STRING,
BANKSTATEMENTDATE TYPE STRING,
CURRENCY TYPE STRING,
OPENINGBALANCEISINTERIM TYPE STRING,
OPENINGBALANCEDEBITCREDITCODE TYPE STRING,
OPENINGBALANCEAMTINTRANSCRCY TYPE STRING,
TOTALDEBITAMOUNTINTRANSCRCY TYPE STRING,
TOTALCREDITAMOUNTINTRANSCRCY TYPE STRING,
CLOSINGBALANCEISINTERIM TYPE STRING,
CLOSINGBALANCEDEBITCREDITCODE TYPE STRING,
CLOSINGBALANCEAMTINTRANSCRCY TYPE STRING,
CLOSING_AVAILABLE_BALANCE TYPE STRING,
CLOSINGAVAILABLDEBITCREDITCODE TYPE STRING,
BANKACCOUNTTYPE TYPE STRING,
BANKSTATEMENTNUMBEROFITEMS TYPE STRING,
BANKDETAILREFERENCE TYPE STRING,
BANKSTATEMENTFORMAT TYPE STRING,
BANKACCOUNTIBAN TYPE STRING,
BANKKEY TYPE STRING,
BANKACCOUNT TYPE STRING,
BANKACCOUNTHOLDERNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FEB_HEADER_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_FEB_HEADER_STR-BANKSTATEMENT sy-vline 
WA_FEB_HEADER_STR-BANKSTATEMENTPAGENUMBER sy-vline 
WA_FEB_HEADER_STR-BANKSTATEMENTDATE sy-vline 
WA_FEB_HEADER_STR-CURRENCY sy-vline 
WA_FEB_HEADER_STR-OPENINGBALANCEISINTERIM sy-vline 
WA_FEB_HEADER_STR-OPENINGBALANCEDEBITCREDITCODE sy-vline 
WA_FEB_HEADER_STR-OPENINGBALANCEAMTINTRANSCRCY sy-vline 
WA_FEB_HEADER_STR-TOTALDEBITAMOUNTINTRANSCRCY sy-vline 
WA_FEB_HEADER_STR-TOTALCREDITAMOUNTINTRANSCRCY sy-vline 
WA_FEB_HEADER_STR-CLOSINGBALANCEISINTERIM sy-vline 
WA_FEB_HEADER_STR-CLOSINGBALANCEDEBITCREDITCODE sy-vline 
WA_FEB_HEADER_STR-CLOSINGBALANCEAMTINTRANSCRCY sy-vline 
WA_FEB_HEADER_STR-CLOSING_AVAILABLE_BALANCE sy-vline 
WA_FEB_HEADER_STR-CLOSINGAVAILABLDEBITCREDITCODE sy-vline 
WA_FEB_HEADER_STR-BANKACCOUNTTYPE sy-vline 
WA_FEB_HEADER_STR-BANKSTATEMENTNUMBEROFITEMS sy-vline 
WA_FEB_HEADER_STR-BANKDETAILREFERENCE sy-vline 
WA_FEB_HEADER_STR-BANKSTATEMENTFORMAT sy-vline 
WA_FEB_HEADER_STR-BANKACCOUNTIBAN sy-vline 
WA_FEB_HEADER_STR-BANKKEY sy-vline 
WA_FEB_HEADER_STR-BANKACCOUNT sy-vline 
WA_FEB_HEADER_STR-BANKACCOUNTHOLDERNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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