ABAP Select data from SAP table BCKTCAT_FLOW into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BCKTCAT_FLOW
*  INTO TABLE @DATA(IT_BCKTCAT_FLOW2).
*--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_BCKTCAT_FLOW INDEX 1 INTO DATA(WA_BCKTCAT_FLOW2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BCKTCAT_FLOW>-MANDT = 1.
<BCKTCAT_FLOW>-CANR_DEFINITION = 1.
<BCKTCAT_FLOW>-CANR_EXECUTION = 1.
<BCKTCAT_FLOW>-FLOW_NUMBER = 1.
<BCKTCAT_FLOW>-COMPANY_CODE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BCKTCAT_FLOW-SECURITY_ID, sy-vline,
  WA_BCKTCAT_FLOW-SECURITY_ACCOUNT, sy-vline,
  WA_BCKTCAT_FLOW-COM_VAL_CLASS, sy-vline,
  WA_BCKTCAT_FLOW-PORTFOLIO, sy-vline,
  WA_BCKTCAT_FLOW-TRADER, sy-vline,
  WA_BCKTCAT_FLOW-POSITION_DATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BCKTCAT_FLOW 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_BCKTCAT_FLOW 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_BCKTCAT_FLOW INTO WA_BCKTCAT_FLOW.


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

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

*Conversion exit ALPHA, internal->external for field SECURITY_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BCKTCAT_FLOW-SECURITY_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BCKTCAT_FLOW-SECURITY_ID.
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_BCKTCAT_FLOW_STR, 
MANDT TYPE STRING,
CANR_DEFINITION TYPE STRING,
CANR_EXECUTION TYPE STRING,
FLOW_NUMBER TYPE STRING,
COMPANY_CODE TYPE STRING,
SECURITY_ID TYPE STRING,
SECURITY_ACCOUNT TYPE STRING,
COM_VAL_CLASS TYPE STRING,
PORTFOLIO TYPE STRING,
TRADER TYPE STRING,
POSITION_DATE TYPE STRING,
UNITS TYPE STRING,
NOMINAL_CURR TYPE STRING,
NOMINAL_AMT TYPE STRING,
NOMINAL_ORG_AMT TYPE STRING,
POSITION_CURR TYPE STRING,
POSITION_AMT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BCKTCAT_FLOW_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_BCKTCAT_FLOW_STR-MANDT sy-vline 
WA_BCKTCAT_FLOW_STR-CANR_DEFINITION sy-vline 
WA_BCKTCAT_FLOW_STR-CANR_EXECUTION sy-vline 
WA_BCKTCAT_FLOW_STR-FLOW_NUMBER sy-vline 
WA_BCKTCAT_FLOW_STR-COMPANY_CODE sy-vline 
WA_BCKTCAT_FLOW_STR-SECURITY_ID sy-vline 
WA_BCKTCAT_FLOW_STR-SECURITY_ACCOUNT sy-vline 
WA_BCKTCAT_FLOW_STR-COM_VAL_CLASS sy-vline 
WA_BCKTCAT_FLOW_STR-PORTFOLIO sy-vline 
WA_BCKTCAT_FLOW_STR-TRADER sy-vline 
WA_BCKTCAT_FLOW_STR-POSITION_DATE sy-vline 
WA_BCKTCAT_FLOW_STR-UNITS sy-vline 
WA_BCKTCAT_FLOW_STR-NOMINAL_CURR sy-vline 
WA_BCKTCAT_FLOW_STR-NOMINAL_AMT sy-vline 
WA_BCKTCAT_FLOW_STR-NOMINAL_ORG_AMT sy-vline 
WA_BCKTCAT_FLOW_STR-POSITION_CURR sy-vline 
WA_BCKTCAT_FLOW_STR-POSITION_AMT sy-vline      INTO ld_text SEPARATED BY SPACE.

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