ABAP Select data from SAP table SLIFO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SLIFO
*  INTO TABLE @DATA(IT_SLIFO2).
*--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_SLIFO INDEX 1 INTO DATA(WA_SLIFO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SLIFO>-BUKRS = 1.
<SLIFO>-WERKS = 1.
<SLIFO>-MATNR = 1.
<SLIFO>-GJAHR = 1.
<SLIFO>-MONAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SLIFO-SHKZG, sy-vline,
  WA_SLIFO-MENGE, sy-vline,
  WA_SLIFO-MEINS, sy-vline,
  WA_SLIFO-DMBTR, sy-vline,
  WA_SLIFO-BUALT, sy-vline,
  WA_SLIFO-EBELN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SLIFO 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_SLIFO 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_SLIFO INTO WA_SLIFO.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_SLIFO-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SLIFO-MATNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_SLIFO-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SLIFO-MEINS.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit MATN1, internal->external for field UMMAT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_SLIFO-UMMAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SLIFO-UMMAT.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit CUNIT, internal->external for field /CWM/MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_SLIFO-/CWM/MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SLIFO-/CWM/MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field /CWM/ERFME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_SLIFO-/CWM/ERFME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SLIFO-/CWM/ERFME.
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_SLIFO_STR, 
BUKRS TYPE STRING,
WERKS TYPE STRING,
MATNR TYPE STRING,
GJAHR TYPE STRING,
MONAT TYPE STRING,
SHKZG TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
DMBTR TYPE STRING,
BUALT TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
EXWRT TYPE STRING,
UMMAT TYPE STRING,
UMWRK TYPE STRING,
UMSOK TYPE STRING,
LBBTR TYPE STRING,
BNBTR TYPE STRING,
BUSTW TYPE STRING,
SJAHR TYPE STRING,
SMBLN TYPE STRING,
SMBLP TYPE STRING,
LFBJA TYPE STRING,
LFBNR TYPE STRING,
LFPOS TYPE STRING,
/CWM/MENGE TYPE STRING,
/CWM/MEINS TYPE STRING,
/CWM/ERFMG TYPE STRING,
/CWM/ERFME TYPE STRING,
/CWM/TY2TQ TYPE STRING,
/CWM/UMTY2TQ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SLIFO_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_SLIFO_STR-BUKRS sy-vline 
WA_SLIFO_STR-WERKS sy-vline 
WA_SLIFO_STR-MATNR sy-vline 
WA_SLIFO_STR-GJAHR sy-vline 
WA_SLIFO_STR-MONAT sy-vline 
WA_SLIFO_STR-SHKZG sy-vline 
WA_SLIFO_STR-MENGE sy-vline 
WA_SLIFO_STR-MEINS sy-vline 
WA_SLIFO_STR-DMBTR sy-vline 
WA_SLIFO_STR-BUALT sy-vline 
WA_SLIFO_STR-EBELN sy-vline 
WA_SLIFO_STR-EBELP sy-vline 
WA_SLIFO_STR-EXWRT sy-vline 
WA_SLIFO_STR-UMMAT sy-vline 
WA_SLIFO_STR-UMWRK sy-vline 
WA_SLIFO_STR-UMSOK sy-vline 
WA_SLIFO_STR-LBBTR sy-vline 
WA_SLIFO_STR-BNBTR sy-vline 
WA_SLIFO_STR-BUSTW sy-vline 
WA_SLIFO_STR-SJAHR sy-vline 
WA_SLIFO_STR-SMBLN sy-vline 
WA_SLIFO_STR-SMBLP sy-vline 
WA_SLIFO_STR-LFBJA sy-vline 
WA_SLIFO_STR-LFBNR sy-vline 
WA_SLIFO_STR-LFPOS sy-vline 
WA_SLIFO_STR-/CWM/MENGE sy-vline 
WA_SLIFO_STR-/CWM/MEINS sy-vline 
WA_SLIFO_STR-/CWM/ERFMG sy-vline 
WA_SLIFO_STR-/CWM/ERFME sy-vline 
WA_SLIFO_STR-/CWM/TY2TQ sy-vline 
WA_SLIFO_STR-/CWM/UMTY2TQ sy-vline      INTO ld_text SEPARATED BY SPACE.

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