ABAP Select data from SAP table FTR_COMS_HEADER_UI_FLOWGEN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FTR_COMS_HEADER_UI_FLOWGEN
*  INTO TABLE @DATA(IT_FTR_COMS_HEADER_UI_FLOWGEN2).
*--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_FTR_COMS_HEADER_UI_FLOWGEN INDEX 1 INTO DATA(WA_FTR_COMS_HEADER_UI_FLOWGEN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FTR_COMS_HEADER_UI_FLOWGEN>-PERIOD_START = 1.
<FTR_COMS_HEADER_UI_FLOWGEN>-PERIOD_END = 1.
<FTR_COMS_HEADER_UI_FLOWGEN>-PRICEFIXCAL = 1.
<FTR_COMS_HEADER_UI_FLOWGEN>-FIXDATERULE = 1.
<FTR_COMS_HEADER_UI_FLOWGEN>-QUAN_RELATED_TO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FTR_COMS_HEADER_UI_FLOWGEN-AVERAGEFREQ, sy-vline,
  WA_FTR_COMS_HEADER_UI_FLOWGEN-FIXWEEKDAY, sy-vline,
  WA_FTR_COMS_HEADER_UI_FLOWGEN-BUSDAYSBEOP, sy-vline,
  WA_FTR_COMS_HEADER_UI_FLOWGEN-OCCUWDINPER, sy-vline,
  WA_FTR_COMS_HEADER_UI_FLOWGEN-PAYDATEOFFS, sy-vline,
  WA_FTR_COMS_HEADER_UI_FLOWGEN-UNITPAYDATO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FTR_COMS_HEADER_UI_FLOWGEN 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_FTR_COMS_HEADER_UI_FLOWGEN 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_FTR_COMS_HEADER_UI_FLOWGEN INTO WA_FTR_COMS_HEADER_UI_FLOWGEN.


*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 CUNIT, internal->external for field UNIT_OF_MEASURE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_FTR_COMS_HEADER_UI_FLOWGEN-UNIT_OF_MEASURE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FTR_COMS_HEADER_UI_FLOWGEN-UNIT_OF_MEASURE.
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_FTR_COMS_HEADER_UI_FLOWGEN_STR, 
PERIOD_START TYPE STRING,
PERIOD_END TYPE STRING,
PRICEFIXCAL TYPE STRING,
FIXDATERULE TYPE STRING,
QUAN_RELATED_TO TYPE STRING,
AVERAGEFREQ TYPE STRING,
FIXWEEKDAY TYPE STRING,
BUSDAYSBEOP TYPE STRING,
OCCUWDINPER TYPE STRING,
PAYDATEOFFS TYPE STRING,
UNITPAYDATO TYPE STRING,
SETTLEFRQ TYPE STRING,
SETTFRQUNIT TYPE STRING,
STARTDATE TYPE STRING,
ENDDATE TYPE STRING,
QUANTITY TYPE STRING,
UNIT_OF_MEASURE TYPE STRING,
QUANTITY_CALENDAR TYPE STRING,
WORKDAY_SHIFT_PAYM_DATE TYPE STRING,
WORKDAY_SHIFT_FIX_DATE TYPE STRING,
COMMON_PRICING TYPE STRING,
QUOTATION_SOURCE TYPE STRING,
QUOTATION_TYPE TYPE STRING,
DCSID TYPE STRING,
MIC TYPE STRING,
PRICE_TYPE TYPE STRING,
TIME_TO_MATURITY TYPE STRING,
TIMING TYPE STRING,
FX_TRANSLATION TYPE STRING,
EXCH_RATE_TYPE TYPE STRING,
CONS_PAY_CURR_CAL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FTR_COMS_HEADER_UI_FLOWGEN_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_FTR_COMS_HEADER_UI_FLOWGEN_STR-PERIOD_START sy-vline 
WA_FTR_COMS_HEADER_UI_FLOWGEN_STR-PERIOD_END sy-vline 
WA_FTR_COMS_HEADER_UI_FLOWGEN_STR-PRICEFIXCAL sy-vline 
WA_FTR_COMS_HEADER_UI_FLOWGEN_STR-FIXDATERULE sy-vline 
WA_FTR_COMS_HEADER_UI_FLOWGEN_STR-QUAN_RELATED_TO sy-vline 
WA_FTR_COMS_HEADER_UI_FLOWGEN_STR-AVERAGEFREQ sy-vline 
WA_FTR_COMS_HEADER_UI_FLOWGEN_STR-FIXWEEKDAY sy-vline 
WA_FTR_COMS_HEADER_UI_FLOWGEN_STR-BUSDAYSBEOP sy-vline 
WA_FTR_COMS_HEADER_UI_FLOWGEN_STR-OCCUWDINPER sy-vline 
WA_FTR_COMS_HEADER_UI_FLOWGEN_STR-PAYDATEOFFS sy-vline 
WA_FTR_COMS_HEADER_UI_FLOWGEN_STR-UNITPAYDATO sy-vline 
WA_FTR_COMS_HEADER_UI_FLOWGEN_STR-SETTLEFRQ sy-vline 
WA_FTR_COMS_HEADER_UI_FLOWGEN_STR-SETTFRQUNIT sy-vline 
WA_FTR_COMS_HEADER_UI_FLOWGEN_STR-STARTDATE sy-vline 
WA_FTR_COMS_HEADER_UI_FLOWGEN_STR-ENDDATE sy-vline 
WA_FTR_COMS_HEADER_UI_FLOWGEN_STR-QUANTITY sy-vline 
WA_FTR_COMS_HEADER_UI_FLOWGEN_STR-UNIT_OF_MEASURE sy-vline 
WA_FTR_COMS_HEADER_UI_FLOWGEN_STR-QUANTITY_CALENDAR sy-vline 
WA_FTR_COMS_HEADER_UI_FLOWGEN_STR-WORKDAY_SHIFT_PAYM_DATE sy-vline 
WA_FTR_COMS_HEADER_UI_FLOWGEN_STR-WORKDAY_SHIFT_FIX_DATE sy-vline 
WA_FTR_COMS_HEADER_UI_FLOWGEN_STR-COMMON_PRICING sy-vline 
WA_FTR_COMS_HEADER_UI_FLOWGEN_STR-QUOTATION_SOURCE sy-vline 
WA_FTR_COMS_HEADER_UI_FLOWGEN_STR-QUOTATION_TYPE sy-vline 
WA_FTR_COMS_HEADER_UI_FLOWGEN_STR-DCSID sy-vline 
WA_FTR_COMS_HEADER_UI_FLOWGEN_STR-MIC sy-vline 
WA_FTR_COMS_HEADER_UI_FLOWGEN_STR-PRICE_TYPE sy-vline 
WA_FTR_COMS_HEADER_UI_FLOWGEN_STR-TIME_TO_MATURITY sy-vline 
WA_FTR_COMS_HEADER_UI_FLOWGEN_STR-TIMING sy-vline 
WA_FTR_COMS_HEADER_UI_FLOWGEN_STR-FX_TRANSLATION sy-vline 
WA_FTR_COMS_HEADER_UI_FLOWGEN_STR-EXCH_RATE_TYPE sy-vline 
WA_FTR_COMS_HEADER_UI_FLOWGEN_STR-CONS_PAY_CURR_CAL sy-vline      INTO ld_text SEPARATED BY SPACE.

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