ABAP Select data from SAP table FERC_SDOC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FERC_SDOC
*  INTO TABLE @DATA(IT_FERC_SDOC2).
*--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_FERC_SDOC INDEX 1 INTO DATA(WA_FERC_SDOC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FERC_SDOC>-BUKRS = 1.
<FERC_SDOC>-BELNR = 1.
<FERC_SDOC>-GJAHR = 1.
<FERC_SDOC>-BUZEI = 1.
<FERC_SDOC>-BLART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FERC_SDOC-BUDAT, sy-vline,
  WA_FERC_SDOC-AWREF, sy-vline,
  WA_FERC_SDOC-AWORG, sy-vline,
  WA_FERC_SDOC-AWTYP, sy-vline,
  WA_FERC_SDOC-SAKNR, sy-vline,
  WA_FERC_SDOC-OBJECT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FERC_SDOC 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_FERC_SDOC 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_FERC_SDOC INTO WA_FERC_SDOC.


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

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FERC_SDOC-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FERC_SDOC-GJAHR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit AC152, internal->external for field DOC_AMOUNT
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_FERC_SDOC-DOC_AMOUNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FERC_SDOC-DOC_AMOUNT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field AMOUNT
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_FERC_SDOC-AMOUNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FERC_SDOC-AMOUNT.
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_FERC_SDOC_STR, 
BUKRS TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
BUZEI TYPE STRING,
BLART TYPE STRING,
BUDAT TYPE STRING,
AWREF TYPE STRING,
AWORG TYPE STRING,
AWTYP TYPE STRING,
SAKNR TYPE STRING,
OBJECT TYPE STRING,
OBJNR TYPE STRING,
P_OBJECT TYPE STRING,
PAROB TYPE STRING,
PERCENTAGE TYPE STRING,
DOC_AMOUNT TYPE STRING,
AMOUNT TYPE STRING,
WAERS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FERC_SDOC_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_FERC_SDOC_STR-BUKRS sy-vline 
WA_FERC_SDOC_STR-BELNR sy-vline 
WA_FERC_SDOC_STR-GJAHR sy-vline 
WA_FERC_SDOC_STR-BUZEI sy-vline 
WA_FERC_SDOC_STR-BLART sy-vline 
WA_FERC_SDOC_STR-BUDAT sy-vline 
WA_FERC_SDOC_STR-AWREF sy-vline 
WA_FERC_SDOC_STR-AWORG sy-vline 
WA_FERC_SDOC_STR-AWTYP sy-vline 
WA_FERC_SDOC_STR-SAKNR sy-vline 
WA_FERC_SDOC_STR-OBJECT sy-vline 
WA_FERC_SDOC_STR-OBJNR sy-vline 
WA_FERC_SDOC_STR-P_OBJECT sy-vline 
WA_FERC_SDOC_STR-PAROB sy-vline 
WA_FERC_SDOC_STR-PERCENTAGE sy-vline 
WA_FERC_SDOC_STR-DOC_AMOUNT sy-vline 
WA_FERC_SDOC_STR-AMOUNT sy-vline 
WA_FERC_SDOC_STR-WAERS sy-vline      INTO ld_text SEPARATED BY SPACE.

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