ABAP Select data from SAP table FCOM_ECP_TEMPLATE_GENERIC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FCOM_ECP_TEMPLATE_GENERIC
*  INTO TABLE @DATA(IT_FCOM_ECP_TEMPLATE_GENERIC2).
*--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_FCOM_ECP_TEMPLATE_GENERIC INDEX 1 INTO DATA(WA_FCOM_ECP_TEMPLATE_GENERIC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FCOM_ECP_TEMPLATE_GENERIC>-MANDT = 1.
<FCOM_ECP_TEMPLATE_GENERIC>-LEDNR = 1.
<FCOM_ECP_TEMPLATE_GENERIC>-BZOBJ = 1.
<FCOM_ECP_TEMPLATE_GENERIC>-KALNR = 1.
<FCOM_ECP_TEMPLATE_GENERIC>-KALKA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FCOM_ECP_TEMPLATE_GENERIC-KADKY, sy-vline,
  WA_FCOM_ECP_TEMPLATE_GENERIC-TVERS, sy-vline,
  WA_FCOM_ECP_TEMPLATE_GENERIC-BWVAR, sy-vline,
  WA_FCOM_ECP_TEMPLATE_GENERIC-KKZMA, sy-vline,
  WA_FCOM_ECP_TEMPLATE_GENERIC-POSNR, sy-vline,
  WA_FCOM_ECP_TEMPLATE_GENERIC-FIELD1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FCOM_ECP_TEMPLATE_GENERIC 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_FCOM_ECP_TEMPLATE_GENERIC 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_FCOM_ECP_TEMPLATE_GENERIC INTO WA_FCOM_ECP_TEMPLATE_GENERIC.


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

*Conversion exit ALPHA, internal->external for field WRTTP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FCOM_ECP_TEMPLATE_GENERIC-WRTTP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FCOM_ECP_TEMPLATE_GENERIC-WRTTP.
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_FCOM_ECP_TEMPLATE_GENERIC_STR, 
MANDT TYPE STRING,
LEDNR TYPE STRING,
BZOBJ TYPE STRING,
KALNR TYPE STRING,
KALKA TYPE STRING,
KADKY TYPE STRING,
TVERS TYPE STRING,
BWVAR TYPE STRING,
KKZMA TYPE STRING,
POSNR TYPE STRING,
FIELD1 TYPE STRING,
FIELD2 TYPE STRING,
FIELD3 TYPE STRING,
FIELD4 TYPE STRING,
FIELD5 TYPE STRING,
FIELD6 TYPE STRING,
FIELD7 TYPE STRING,
COSTING_MODEL TYPE STRING,
WRTTP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FCOM_ECP_TEMPLATE_GENERIC_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_FCOM_ECP_TEMPLATE_GENERIC_STR-MANDT sy-vline 
WA_FCOM_ECP_TEMPLATE_GENERIC_STR-LEDNR sy-vline 
WA_FCOM_ECP_TEMPLATE_GENERIC_STR-BZOBJ sy-vline 
WA_FCOM_ECP_TEMPLATE_GENERIC_STR-KALNR sy-vline 
WA_FCOM_ECP_TEMPLATE_GENERIC_STR-KALKA sy-vline 
WA_FCOM_ECP_TEMPLATE_GENERIC_STR-KADKY sy-vline 
WA_FCOM_ECP_TEMPLATE_GENERIC_STR-TVERS sy-vline 
WA_FCOM_ECP_TEMPLATE_GENERIC_STR-BWVAR sy-vline 
WA_FCOM_ECP_TEMPLATE_GENERIC_STR-KKZMA sy-vline 
WA_FCOM_ECP_TEMPLATE_GENERIC_STR-POSNR sy-vline 
WA_FCOM_ECP_TEMPLATE_GENERIC_STR-FIELD1 sy-vline 
WA_FCOM_ECP_TEMPLATE_GENERIC_STR-FIELD2 sy-vline 
WA_FCOM_ECP_TEMPLATE_GENERIC_STR-FIELD3 sy-vline 
WA_FCOM_ECP_TEMPLATE_GENERIC_STR-FIELD4 sy-vline 
WA_FCOM_ECP_TEMPLATE_GENERIC_STR-FIELD5 sy-vline 
WA_FCOM_ECP_TEMPLATE_GENERIC_STR-FIELD6 sy-vline 
WA_FCOM_ECP_TEMPLATE_GENERIC_STR-FIELD7 sy-vline 
WA_FCOM_ECP_TEMPLATE_GENERIC_STR-COSTING_MODEL sy-vline 
WA_FCOM_ECP_TEMPLATE_GENERIC_STR-WRTTP sy-vline      INTO ld_text SEPARATED BY SPACE.

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