ABAP Select data from SAP table FCLM_CP_S_ENTITY_ACC_DOC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FCLM_CP_S_ENTITY_ACC_DOC
*  INTO TABLE @DATA(IT_FCLM_CP_S_ENTITY_ACC_DOC2).
*--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_FCLM_CP_S_ENTITY_ACC_DOC INDEX 1 INTO DATA(WA_FCLM_CP_S_ENTITY_ACC_DOC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FCLM_CP_S_ENTITY_ACC_DOC>-DOCUMENTNUMBER = 1.
<FCLM_CP_S_ENTITY_ACC_DOC>-LINEITEMNO = 1.
<FCLM_CP_S_ENTITY_ACC_DOC>-FISCALYEAR = 1.
<FCLM_CP_S_ENTITY_ACC_DOC>-COMPANYCODE = 1.
<FCLM_CP_S_ENTITY_ACC_DOC>-POSTINGDATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FCLM_CP_S_ENTITY_ACC_DOC-DOCUMENTDATE, sy-vline,
  WA_FCLM_CP_S_ENTITY_ACC_DOC-FISCALPERIOD, sy-vline,
  WA_FCLM_CP_S_ENTITY_ACC_DOC-TRANSACTIONCODE, sy-vline,
  WA_FCLM_CP_S_ENTITY_ACC_DOC-USERNAME, sy-vline,
  WA_FCLM_CP_S_ENTITY_ACC_DOC-LINEITEMTEXT, sy-vline,
  WA_FCLM_CP_S_ENTITY_ACC_DOC-DOCTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FCLM_CP_S_ENTITY_ACC_DOC 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_FCLM_CP_S_ENTITY_ACC_DOC 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_FCLM_CP_S_ENTITY_ACC_DOC INTO WA_FCLM_CP_S_ENTITY_ACC_DOC.


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

*Conversion exit ALPHA, internal->external for field GLACCOUNT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FCLM_CP_S_ENTITY_ACC_DOC-GLACCOUNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FCLM_CP_S_ENTITY_ACC_DOC-GLACCOUNT.
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_FCLM_CP_S_ENTITY_ACC_DOC_STR, 
DOCUMENTNUMBER TYPE STRING,
LINEITEMNO TYPE STRING,
FISCALYEAR TYPE STRING,
COMPANYCODE TYPE STRING,
POSTINGDATE TYPE STRING,
DOCUMENTDATE TYPE STRING,
FISCALPERIOD TYPE STRING,
TRANSACTIONCODE TYPE STRING,
USERNAME TYPE STRING,
LINEITEMTEXT TYPE STRING,
DOCTYPE TYPE STRING,
DOCHEADERTXT TYPE STRING,
GLACCTDESC TYPE STRING,
GLACCOUNT TYPE STRING,
DUMMY_ACC_DOC_INCL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FCLM_CP_S_ENTITY_ACC_DOC_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_FCLM_CP_S_ENTITY_ACC_DOC_STR-DOCUMENTNUMBER sy-vline 
WA_FCLM_CP_S_ENTITY_ACC_DOC_STR-LINEITEMNO sy-vline 
WA_FCLM_CP_S_ENTITY_ACC_DOC_STR-FISCALYEAR sy-vline 
WA_FCLM_CP_S_ENTITY_ACC_DOC_STR-COMPANYCODE sy-vline 
WA_FCLM_CP_S_ENTITY_ACC_DOC_STR-POSTINGDATE sy-vline 
WA_FCLM_CP_S_ENTITY_ACC_DOC_STR-DOCUMENTDATE sy-vline 
WA_FCLM_CP_S_ENTITY_ACC_DOC_STR-FISCALPERIOD sy-vline 
WA_FCLM_CP_S_ENTITY_ACC_DOC_STR-TRANSACTIONCODE sy-vline 
WA_FCLM_CP_S_ENTITY_ACC_DOC_STR-USERNAME sy-vline 
WA_FCLM_CP_S_ENTITY_ACC_DOC_STR-LINEITEMTEXT sy-vline 
WA_FCLM_CP_S_ENTITY_ACC_DOC_STR-DOCTYPE sy-vline 
WA_FCLM_CP_S_ENTITY_ACC_DOC_STR-DOCHEADERTXT sy-vline 
WA_FCLM_CP_S_ENTITY_ACC_DOC_STR-GLACCTDESC sy-vline 
WA_FCLM_CP_S_ENTITY_ACC_DOC_STR-GLACCOUNT sy-vline 
WA_FCLM_CP_S_ENTITY_ACC_DOC_STR-DUMMY_ACC_DOC_INCL sy-vline      INTO ld_text SEPARATED BY SPACE.

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