ABAP Select data from SAP table FC01ITXLST into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FC01ITXLST 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 FC01ITXLST. 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 FC01ITXLST 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_FC01ITXLST TYPE STANDARD TABLE OF FC01ITXLST,
      WA_FC01ITXLST TYPE FC01ITXLST,
      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: <FC01ITXLST> TYPE FC01ITXLST.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_FC01ITXLST.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM FC01ITXLST
  INTO TABLE IT_FC01ITXLST.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FC01ITXLST
*  INTO TABLE @DATA(IT_FC01ITXLST2).
*--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_FC01ITXLST INDEX 1 INTO DATA(WA_FC01ITXLST2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_FC01ITXLST ASSIGNING <FC01ITXLST>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FC01ITXLST>-SUMIND = 1.
<FC01ITXLST>-CRIT1 = 1.
<FC01ITXLST>-CRIT2 = 1.
<FC01ITXLST>-CRIT3 = 1.
<FC01ITXLST>-CRIT4 = 1.

ENDLOOP.

LOOP AT IT_FC01ITXLST INTO WA_FC01ITXLST.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FC01ITXLST-CRIT5, sy-vline,
  WA_FC01ITXLST-DIMEN, sy-vline,
  WA_FC01ITXLST-RVERS, sy-vline,
  WA_FC01ITXLST-CMETH, sy-vline,
  WA_FC01ITXLST-DOCTY, sy-vline,
  WA_FC01ITXLST-SEQNO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FC01ITXLST 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_FC01ITXLST 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_FC01ITXLST INTO WA_FC01ITXLST.


*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 RVERS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FC01ITXLST-RVERS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FC01ITXLST-RVERS.
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_FC01ITXLST_STR, 
SUMIND TYPE STRING,
CRIT1 TYPE STRING,
CRIT2 TYPE STRING,
CRIT3 TYPE STRING,
CRIT4 TYPE STRING,
CRIT5 TYPE STRING,
DIMEN TYPE STRING,
RVERS TYPE STRING,
CMETH TYPE STRING,
DOCTY TYPE STRING,
SEQNO TYPE STRING,
RNDIN TYPE STRING,
CRIT6 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FC01ITXLST_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_FC01ITXLST_STR-SUMIND sy-vline 
WA_FC01ITXLST_STR-CRIT1 sy-vline 
WA_FC01ITXLST_STR-CRIT2 sy-vline 
WA_FC01ITXLST_STR-CRIT3 sy-vline 
WA_FC01ITXLST_STR-CRIT4 sy-vline 
WA_FC01ITXLST_STR-CRIT5 sy-vline 
WA_FC01ITXLST_STR-DIMEN sy-vline 
WA_FC01ITXLST_STR-RVERS sy-vline 
WA_FC01ITXLST_STR-CMETH sy-vline 
WA_FC01ITXLST_STR-DOCTY sy-vline 
WA_FC01ITXLST_STR-SEQNO sy-vline 
WA_FC01ITXLST_STR-RNDIN sy-vline 
WA_FC01ITXLST_STR-CRIT6 sy-vline      INTO ld_text SEPARATED BY SPACE.

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