ABAP Select data from SAP table FCOV_COEP_LINK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FCOV_COEP_LINK
*  INTO TABLE @DATA(IT_FCOV_COEP_LINK2).
*--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_FCOV_COEP_LINK INDEX 1 INTO DATA(WA_FCOV_COEP_LINK2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FCOV_COEP_LINK-AWTYP, sy-vline,
  WA_FCOV_COEP_LINK-AWKEY, sy-vline,
  WA_FCOV_COEP_LINK-AWSYS, sy-vline,
  WA_FCOV_COEP_LINK-POSNR, sy-vline,
  WA_FCOV_COEP_LINK-HKONT, sy-vline,
  WA_FCOV_COEP_LINK-KSTAR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FCOV_COEP_LINK 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_FCOV_COEP_LINK 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_FCOV_COEP_LINK INTO WA_FCOV_COEP_LINK.


*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_FCOV_COEP_LINK-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FCOV_COEP_LINK-BELNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit AU132, internal->external for field WRBTR
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_FCOV_COEP_LINK-WRBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FCOV_COEP_LINK-WRBTR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FCOV_COEP_LINK-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FCOV_COEP_LINK-AUFNR.
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_FCOV_COEP_LINK_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
BUZEI TYPE STRING,
AWTYP TYPE STRING,
AWKEY TYPE STRING,
AWSYS TYPE STRING,
POSNR TYPE STRING,
HKONT TYPE STRING,
KSTAR TYPE STRING,
KOART TYPE STRING,
SHKZG TYPE STRING,
WRBTR TYPE STRING,
KOSTL TYPE STRING,
AUFNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FCOV_COEP_LINK_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_FCOV_COEP_LINK_STR-MANDT sy-vline 
WA_FCOV_COEP_LINK_STR-BUKRS sy-vline 
WA_FCOV_COEP_LINK_STR-BELNR sy-vline 
WA_FCOV_COEP_LINK_STR-GJAHR sy-vline 
WA_FCOV_COEP_LINK_STR-BUZEI sy-vline 
WA_FCOV_COEP_LINK_STR-AWTYP sy-vline 
WA_FCOV_COEP_LINK_STR-AWKEY sy-vline 
WA_FCOV_COEP_LINK_STR-AWSYS sy-vline 
WA_FCOV_COEP_LINK_STR-POSNR sy-vline 
WA_FCOV_COEP_LINK_STR-HKONT sy-vline 
WA_FCOV_COEP_LINK_STR-KSTAR sy-vline 
WA_FCOV_COEP_LINK_STR-KOART sy-vline 
WA_FCOV_COEP_LINK_STR-SHKZG sy-vline 
WA_FCOV_COEP_LINK_STR-WRBTR sy-vline 
WA_FCOV_COEP_LINK_STR-KOSTL sy-vline 
WA_FCOV_COEP_LINK_STR-AUFNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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