ABAP Select data from SAP table FUCN_FIDOC_DETAIL_GL_BASIC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FUCN_FIDOC_DETAIL_GL_BASIC
*  INTO TABLE @DATA(IT_FUCN_FIDOC_DETAIL_GL_BASIC2).
*--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_FUCN_FIDOC_DETAIL_GL_BASIC INDEX 1 INTO DATA(WA_FUCN_FIDOC_DETAIL_GL_BASIC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FUCN_FIDOC_DETAIL_GL_BASIC>-BUKRS = 1.
<FUCN_FIDOC_DETAIL_GL_BASIC>-ZUONR = 1.
<FUCN_FIDOC_DETAIL_GL_BASIC>-VALUT = 1.
<FUCN_FIDOC_DETAIL_GL_BASIC>-RSTGR = 1.
<FUCN_FIDOC_DETAIL_GL_BASIC>-FISTL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FUCN_FIDOC_DETAIL_GL_BASIC-GJAHR, sy-vline,
  WA_FUCN_FIDOC_DETAIL_GL_BASIC-FIKRS, sy-vline,
  WA_FUCN_FIDOC_DETAIL_GL_BASIC-FIPOS, sy-vline,
  WA_FUCN_FIDOC_DETAIL_GL_BASIC-KOSTL, sy-vline,
  WA_FUCN_FIDOC_DETAIL_GL_BASIC-KOKRS, sy-vline,
  WA_FUCN_FIDOC_DETAIL_GL_BASIC-FKBER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FUCN_FIDOC_DETAIL_GL_BASIC 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_FUCN_FIDOC_DETAIL_GL_BASIC 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_FUCN_FIDOC_DETAIL_GL_BASIC INTO WA_FUCN_FIDOC_DETAIL_GL_BASIC.


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

*Conversion exit FMCIS, internal->external for field FIPOS
CALL FUNCTION 'CONVERSION_EXIT_FMCIS_OUTPUT'
  EXPORTING
    input =                      WA_FUCN_FIDOC_DETAIL_GL_BASIC-FIPOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FUCN_FIDOC_DETAIL_GL_BASIC-FIPOS.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ABPSP, internal->external for field PROJK
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_FUCN_FIDOC_DETAIL_GL_BASIC-PROJK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FUCN_FIDOC_DETAIL_GL_BASIC-PROJK.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit NUMCV, internal->external for field VORNR_AUF
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_FUCN_FIDOC_DETAIL_GL_BASIC-VORNR_AUF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FUCN_FIDOC_DETAIL_GL_BASIC-VORNR_AUF.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field VBUND
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FUCN_FIDOC_DETAIL_GL_BASIC-VBUND
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FUCN_FIDOC_DETAIL_GL_BASIC-VBUND.
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_FUCN_FIDOC_DETAIL_GL_BASIC_STR, 
BUKRS TYPE STRING,
ZUONR TYPE STRING,
VALUT TYPE STRING,
RSTGR TYPE STRING,
FISTL TYPE STRING,
GJAHR TYPE STRING,
FIKRS TYPE STRING,
FIPOS TYPE STRING,
KOSTL TYPE STRING,
KOKRS TYPE STRING,
FKBER TYPE STRING,
PROJK TYPE STRING,
AUFNR TYPE STRING,
VORNR_AUF TYPE STRING,
GSBER TYPE STRING,
PRCTR TYPE STRING,
XNEGP TYPE STRING,
ZFBDT TYPE STRING,
VBUND TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FUCN_FIDOC_DETAIL_GL_BASIC_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_FUCN_FIDOC_DETAIL_GL_BASIC_STR-BUKRS sy-vline 
WA_FUCN_FIDOC_DETAIL_GL_BASIC_STR-ZUONR sy-vline 
WA_FUCN_FIDOC_DETAIL_GL_BASIC_STR-VALUT sy-vline 
WA_FUCN_FIDOC_DETAIL_GL_BASIC_STR-RSTGR sy-vline 
WA_FUCN_FIDOC_DETAIL_GL_BASIC_STR-FISTL sy-vline 
WA_FUCN_FIDOC_DETAIL_GL_BASIC_STR-GJAHR sy-vline 
WA_FUCN_FIDOC_DETAIL_GL_BASIC_STR-FIKRS sy-vline 
WA_FUCN_FIDOC_DETAIL_GL_BASIC_STR-FIPOS sy-vline 
WA_FUCN_FIDOC_DETAIL_GL_BASIC_STR-KOSTL sy-vline 
WA_FUCN_FIDOC_DETAIL_GL_BASIC_STR-KOKRS sy-vline 
WA_FUCN_FIDOC_DETAIL_GL_BASIC_STR-FKBER sy-vline 
WA_FUCN_FIDOC_DETAIL_GL_BASIC_STR-PROJK sy-vline 
WA_FUCN_FIDOC_DETAIL_GL_BASIC_STR-AUFNR sy-vline 
WA_FUCN_FIDOC_DETAIL_GL_BASIC_STR-VORNR_AUF sy-vline 
WA_FUCN_FIDOC_DETAIL_GL_BASIC_STR-GSBER sy-vline 
WA_FUCN_FIDOC_DETAIL_GL_BASIC_STR-PRCTR sy-vline 
WA_FUCN_FIDOC_DETAIL_GL_BASIC_STR-XNEGP sy-vline 
WA_FUCN_FIDOC_DETAIL_GL_BASIC_STR-ZFBDT sy-vline 
WA_FUCN_FIDOC_DETAIL_GL_BASIC_STR-VBUND sy-vline      INTO ld_text SEPARATED BY SPACE.

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