ABAP Select data from SAP table BCA_ALV_ROUTE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BCA_ALV_ROUTE
*  INTO TABLE @DATA(IT_BCA_ALV_ROUTE2).
*--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_BCA_ALV_ROUTE INDEX 1 INTO DATA(WA_BCA_ALV_ROUTE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BCA_ALV_ROUTE>-MANDT = 1.
<BCA_ALV_ROUTE>-BKKRS = 1.
<BCA_ALV_ROUTE>-BANKLSND = 1.
<BCA_ALV_ROUTE>-BANKSSND = 1.
<BCA_ALV_ROUTE>-BANKLRP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BCA_ALV_ROUTE-BANKSRP, sy-vline,
  WA_BCA_ALV_ROUTE-TCUR, sy-vline,
  WA_BCA_ALV_ROUTE-ZLSCH, sy-vline,
  WA_BCA_ALV_ROUTE-ROUTE, sy-vline,
  WA_BCA_ALV_ROUTE-BKKRSMOD, sy-vline,
  WA_BCA_ALV_ROUTE-BANKLOPMOD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BCA_ALV_ROUTE 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_BCA_ALV_ROUTE 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_BCA_ALV_ROUTE INTO WA_BCA_ALV_ROUTE.


*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 ACEXT, internal->external for field ACCTBKKRS
CALL FUNCTION 'CONVERSION_EXIT_ACEXT_OUTPUT'
  EXPORTING
    input =                      WA_BCA_ALV_ROUTE-ACCTBKKRS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BCA_ALV_ROUTE-ACCTBKKRS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ACEXT, internal->external for field ACCTOPMOD
CALL FUNCTION 'CONVERSION_EXIT_ACEXT_OUTPUT'
  EXPORTING
    input =                      WA_BCA_ALV_ROUTE-ACCTOPMOD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BCA_ALV_ROUTE-ACCTOPMOD.
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_BCA_ALV_ROUTE_STR, 
MANDT TYPE STRING,
BKKRS TYPE STRING,
BANKLSND TYPE STRING,
BANKSSND TYPE STRING,
BANKLRP TYPE STRING,
BANKSRP TYPE STRING,
TCUR TYPE STRING,
ZLSCH TYPE STRING,
ROUTE TYPE STRING,
BKKRSMOD TYPE STRING,
BANKLOPMOD TYPE STRING,
BANKSOPMOD TYPE STRING,
ACCTBKKRS TYPE STRING,
ACCTOPMOD TYPE STRING,
EXTERN TYPE STRING,
ARBGB TYPE STRING,
MSGTY TYPE STRING,
TXTNR TYPE STRING,
TEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BCA_ALV_ROUTE_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_BCA_ALV_ROUTE_STR-MANDT sy-vline 
WA_BCA_ALV_ROUTE_STR-BKKRS sy-vline 
WA_BCA_ALV_ROUTE_STR-BANKLSND sy-vline 
WA_BCA_ALV_ROUTE_STR-BANKSSND sy-vline 
WA_BCA_ALV_ROUTE_STR-BANKLRP sy-vline 
WA_BCA_ALV_ROUTE_STR-BANKSRP sy-vline 
WA_BCA_ALV_ROUTE_STR-TCUR sy-vline 
WA_BCA_ALV_ROUTE_STR-ZLSCH sy-vline 
WA_BCA_ALV_ROUTE_STR-ROUTE sy-vline 
WA_BCA_ALV_ROUTE_STR-BKKRSMOD sy-vline 
WA_BCA_ALV_ROUTE_STR-BANKLOPMOD sy-vline 
WA_BCA_ALV_ROUTE_STR-BANKSOPMOD sy-vline 
WA_BCA_ALV_ROUTE_STR-ACCTBKKRS sy-vline 
WA_BCA_ALV_ROUTE_STR-ACCTOPMOD sy-vline 
WA_BCA_ALV_ROUTE_STR-EXTERN sy-vline 
WA_BCA_ALV_ROUTE_STR-ARBGB sy-vline 
WA_BCA_ALV_ROUTE_STR-MSGTY sy-vline 
WA_BCA_ALV_ROUTE_STR-TXTNR sy-vline 
WA_BCA_ALV_ROUTE_STR-TEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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