ABAP Select data from SAP table SI_FAKTURA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SI_FAKTURA
*  INTO TABLE @DATA(IT_SI_FAKTURA2).
*--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_SI_FAKTURA INDEX 1 INTO DATA(WA_SI_FAKTURA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SI_FAKTURA>-ANZEP = 1.
<SI_FAKTURA>-FREQZ = 1.
<SI_FAKTURA>-GBETR = 1.
<SI_FAKTURA>-BUKNZ = 1.
<SI_FAKTURA>-KZSIA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SI_FAKTURA-KZSIP, sy-vline,
  WA_SI_FAKTURA-NFAEL, sy-vline,
  WA_SI_FAKTURA-RVTNR, sy-vline,
  WA_SI_FAKTURA-SBHSL, sy-vline,
  WA_SI_FAKTURA-TCODE, sy-vline,
  WA_SI_FAKTURA-VBUND, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SI_FAKTURA 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_SI_FAKTURA 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_SI_FAKTURA INTO WA_SI_FAKTURA.


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

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

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

*Conversion exit ALPHA, internal->external for field VKONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_SI_FAKTURA-VKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SI_FAKTURA-VKONT.
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_SI_FAKTURA_STR, 
ANZEP TYPE STRING,
FREQZ TYPE STRING,
GBETR TYPE STRING,
BUKNZ TYPE STRING,
KZSIA TYPE STRING,
KZSIP TYPE STRING,
NFAEL TYPE STRING,
RVTNR TYPE STRING,
SBHSL TYPE STRING,
TCODE TYPE STRING,
VBUND TYPE STRING,
REFGF TYPE STRING,
REFBL TYPE STRING,
FOKNZ TYPE STRING,
LNDSL TYPE STRING,
VKONT TYPE STRING,
INDYN TYPE STRING,
INFAK TYPE STRING,
STPRZ TYPE STRING,
VERKZ TYPE STRING,
BEWAR TYPE STRING,
ADKZN TYPE STRING,
OPTXT TYPE STRING,
BUGRD TYPE STRING,
STPAR TYPE STRING,
MANDT TYPE STRING,
RBART TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SI_FAKTURA_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_SI_FAKTURA_STR-ANZEP sy-vline 
WA_SI_FAKTURA_STR-FREQZ sy-vline 
WA_SI_FAKTURA_STR-GBETR sy-vline 
WA_SI_FAKTURA_STR-BUKNZ sy-vline 
WA_SI_FAKTURA_STR-KZSIA sy-vline 
WA_SI_FAKTURA_STR-KZSIP sy-vline 
WA_SI_FAKTURA_STR-NFAEL sy-vline 
WA_SI_FAKTURA_STR-RVTNR sy-vline 
WA_SI_FAKTURA_STR-SBHSL sy-vline 
WA_SI_FAKTURA_STR-TCODE sy-vline 
WA_SI_FAKTURA_STR-VBUND sy-vline 
WA_SI_FAKTURA_STR-REFGF sy-vline 
WA_SI_FAKTURA_STR-REFBL sy-vline 
WA_SI_FAKTURA_STR-FOKNZ sy-vline 
WA_SI_FAKTURA_STR-LNDSL sy-vline 
WA_SI_FAKTURA_STR-VKONT sy-vline 
WA_SI_FAKTURA_STR-INDYN sy-vline 
WA_SI_FAKTURA_STR-INFAK sy-vline 
WA_SI_FAKTURA_STR-STPRZ sy-vline 
WA_SI_FAKTURA_STR-VERKZ sy-vline 
WA_SI_FAKTURA_STR-BEWAR sy-vline 
WA_SI_FAKTURA_STR-ADKZN sy-vline 
WA_SI_FAKTURA_STR-OPTXT sy-vline 
WA_SI_FAKTURA_STR-BUGRD sy-vline 
WA_SI_FAKTURA_STR-STPAR sy-vline 
WA_SI_FAKTURA_STR-MANDT sy-vline 
WA_SI_FAKTURA_STR-RBART sy-vline      INTO ld_text SEPARATED BY SPACE.

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