ABAP Select data from SAP table FAA_S_DOC_IT_COMPFIELDS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FAA_S_DOC_IT_COMPFIELDS
*  INTO TABLE @DATA(IT_FAA_S_DOC_IT_COMPFIELDS2).
*--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_FAA_S_DOC_IT_COMPFIELDS INDEX 1 INTO DATA(WA_FAA_S_DOC_IT_COMPFIELDS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FAA_S_DOC_IT_COMPFIELDS>-AWITEM = 1.
<FAA_S_DOC_IT_COMPFIELDS>-TECH_LEDGER = 1.
<FAA_S_DOC_IT_COMPFIELDS>-VORGN = 1.
<FAA_S_DOC_IT_COMPFIELDS>-BUDAT = 1.
<FAA_S_DOC_IT_COMPFIELDS>-BZDAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FAA_S_DOC_IT_COMPFIELDS-POPER, sy-vline,
  WA_FAA_S_DOC_IT_COMPFIELDS-BWASL, sy-vline,
  WA_FAA_S_DOC_IT_COMPFIELDS-MOVCAT, sy-vline,
  WA_FAA_S_DOC_IT_COMPFIELDS-HSL, sy-vline,
  WA_FAA_S_DOC_IT_COMPFIELDS-KSL, sy-vline,
  WA_FAA_S_DOC_IT_COMPFIELDS-OSL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FAA_S_DOC_IT_COMPFIELDS 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_FAA_S_DOC_IT_COMPFIELDS 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_FAA_S_DOC_IT_COMPFIELDS INTO WA_FAA_S_DOC_IT_COMPFIELDS.


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

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

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

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

*Conversion exit ALPHA, internal->external for field PANL1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FAA_S_DOC_IT_COMPFIELDS-PANL1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FAA_S_DOC_IT_COMPFIELDS-PANL1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PANL2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FAA_S_DOC_IT_COMPFIELDS-PANL2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FAA_S_DOC_IT_COMPFIELDS-PANL2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RECID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FAA_S_DOC_IT_COMPFIELDS-RECID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FAA_S_DOC_IT_COMPFIELDS-RECID.
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_FAA_S_DOC_IT_COMPFIELDS_STR, 
AWITEM TYPE STRING,
TECH_LEDGER TYPE STRING,
VORGN TYPE STRING,
BUDAT TYPE STRING,
BZDAT TYPE STRING,
POPER TYPE STRING,
BWASL TYPE STRING,
MOVCAT TYPE STRING,
HSL TYPE STRING,
KSL TYPE STRING,
OSL TYPE STRING,
VSL TYPE STRING,
RHCUR TYPE STRING,
RKCUR TYPE STRING,
ROCUR TYPE STRING,
RVCUR TYPE STRING,
RFCCUR TYPE STRING,
XREVERSING TYPE STRING,
XREVERSED TYPE STRING,
XSETTLING TYPE STRING,
XSETTLED TYPE STRING,
PREC_AWTYP TYPE STRING,
PREC_AWORG TYPE STRING,
PREC_AWREF TYPE STRING,
PREC_SUBTA TYPE STRING,
AWTYP_REV TYPE STRING,
AWREF_REV TYPE STRING,
AWORG_REV TYPE STRING,
SUBTA_REV TYPE STRING,
ANLKL TYPE STRING,
KTOGR TYPE STRING,
PANL1 TYPE STRING,
PANL2 TYPE STRING,
MIG_SOURCE TYPE STRING,
RECID TYPE STRING,
BLDAT TYPE STRING,
SGTXT TYPE STRING,
ZUONR TYPE STRING,
OBART TYPE STRING,
OBJID TYPE STRING,
UBZDT_PN TYPE STRING,
XVABG_PN TYPE STRING,
PROZS_PN TYPE STRING,
XMANPROPVAL_PN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FAA_S_DOC_IT_COMPFIELDS_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_FAA_S_DOC_IT_COMPFIELDS_STR-AWITEM sy-vline 
WA_FAA_S_DOC_IT_COMPFIELDS_STR-TECH_LEDGER sy-vline 
WA_FAA_S_DOC_IT_COMPFIELDS_STR-VORGN sy-vline 
WA_FAA_S_DOC_IT_COMPFIELDS_STR-BUDAT sy-vline 
WA_FAA_S_DOC_IT_COMPFIELDS_STR-BZDAT sy-vline 
WA_FAA_S_DOC_IT_COMPFIELDS_STR-POPER sy-vline 
WA_FAA_S_DOC_IT_COMPFIELDS_STR-BWASL sy-vline 
WA_FAA_S_DOC_IT_COMPFIELDS_STR-MOVCAT sy-vline 
WA_FAA_S_DOC_IT_COMPFIELDS_STR-HSL sy-vline 
WA_FAA_S_DOC_IT_COMPFIELDS_STR-KSL sy-vline 
WA_FAA_S_DOC_IT_COMPFIELDS_STR-OSL sy-vline 
WA_FAA_S_DOC_IT_COMPFIELDS_STR-VSL sy-vline 
WA_FAA_S_DOC_IT_COMPFIELDS_STR-RHCUR sy-vline 
WA_FAA_S_DOC_IT_COMPFIELDS_STR-RKCUR sy-vline 
WA_FAA_S_DOC_IT_COMPFIELDS_STR-ROCUR sy-vline 
WA_FAA_S_DOC_IT_COMPFIELDS_STR-RVCUR sy-vline 
WA_FAA_S_DOC_IT_COMPFIELDS_STR-RFCCUR sy-vline 
WA_FAA_S_DOC_IT_COMPFIELDS_STR-XREVERSING sy-vline 
WA_FAA_S_DOC_IT_COMPFIELDS_STR-XREVERSED sy-vline 
WA_FAA_S_DOC_IT_COMPFIELDS_STR-XSETTLING sy-vline 
WA_FAA_S_DOC_IT_COMPFIELDS_STR-XSETTLED sy-vline 
WA_FAA_S_DOC_IT_COMPFIELDS_STR-PREC_AWTYP sy-vline 
WA_FAA_S_DOC_IT_COMPFIELDS_STR-PREC_AWORG sy-vline 
WA_FAA_S_DOC_IT_COMPFIELDS_STR-PREC_AWREF sy-vline 
WA_FAA_S_DOC_IT_COMPFIELDS_STR-PREC_SUBTA sy-vline 
WA_FAA_S_DOC_IT_COMPFIELDS_STR-AWTYP_REV sy-vline 
WA_FAA_S_DOC_IT_COMPFIELDS_STR-AWREF_REV sy-vline 
WA_FAA_S_DOC_IT_COMPFIELDS_STR-AWORG_REV sy-vline 
WA_FAA_S_DOC_IT_COMPFIELDS_STR-SUBTA_REV sy-vline 
WA_FAA_S_DOC_IT_COMPFIELDS_STR-ANLKL sy-vline 
WA_FAA_S_DOC_IT_COMPFIELDS_STR-KTOGR sy-vline 
WA_FAA_S_DOC_IT_COMPFIELDS_STR-PANL1 sy-vline 
WA_FAA_S_DOC_IT_COMPFIELDS_STR-PANL2 sy-vline 
WA_FAA_S_DOC_IT_COMPFIELDS_STR-MIG_SOURCE sy-vline 
WA_FAA_S_DOC_IT_COMPFIELDS_STR-RECID sy-vline 
WA_FAA_S_DOC_IT_COMPFIELDS_STR-BLDAT sy-vline 
WA_FAA_S_DOC_IT_COMPFIELDS_STR-SGTXT sy-vline 
WA_FAA_S_DOC_IT_COMPFIELDS_STR-ZUONR sy-vline 
WA_FAA_S_DOC_IT_COMPFIELDS_STR-OBART sy-vline 
WA_FAA_S_DOC_IT_COMPFIELDS_STR-OBJID sy-vline 
WA_FAA_S_DOC_IT_COMPFIELDS_STR-UBZDT_PN sy-vline 
WA_FAA_S_DOC_IT_COMPFIELDS_STR-XVABG_PN sy-vline 
WA_FAA_S_DOC_IT_COMPFIELDS_STR-PROZS_PN sy-vline 
WA_FAA_S_DOC_IT_COMPFIELDS_STR-XMANPROPVAL_PN sy-vline      INTO ld_text SEPARATED BY SPACE.

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