ABAP Select data from SAP table FSLS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FSLS
*  INTO TABLE @DATA(IT_FSLS2).
*--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_FSLS INDEX 1 INTO DATA(WA_FSLS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FSLS>-MANDT = 1.
<FSLS>-SLNUM = 1.
<FSLS>-SLCAT = 1.
<FSLS>-SPRAS = 1.
<FSLS>-SLBHO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FSLS-SLLAW, sy-vline,
  WA_FSLS-SLLAW2, sy-vline,
  WA_FSLS-SLLAW3, sy-vline,
  WA_FSLS-SLDOE, sy-vline,
  WA_FSLS-SLDST, sy-vline,
  WA_FSLS-SLDEN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FSLS 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_FSLS 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_FSLS INTO WA_FSLS.


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

*Conversion exit ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_FSLS-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FSLS-SPRAS.
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_FSLS_STR, 
MANDT TYPE STRING,
SLNUM TYPE STRING,
SLCAT TYPE STRING,
SPRAS TYPE STRING,
SLBHO TYPE STRING,
SLLAW TYPE STRING,
SLLAW2 TYPE STRING,
SLLAW3 TYPE STRING,
SLDOE TYPE STRING,
SLDST TYPE STRING,
SLDEN TYPE STRING,
SLCM1 TYPE STRING,
SLCM2 TYPE STRING,
SLCM3 TYPE STRING,
SLDCO TYPE STRING,
SLDAE TYPE STRING,
SLDZT TYPE STRING,
SLAEN TYPE STRING,
SLSER TYPE STRING,
SLSRE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FSLS_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_FSLS_STR-MANDT sy-vline 
WA_FSLS_STR-SLNUM sy-vline 
WA_FSLS_STR-SLCAT sy-vline 
WA_FSLS_STR-SPRAS sy-vline 
WA_FSLS_STR-SLBHO sy-vline 
WA_FSLS_STR-SLLAW sy-vline 
WA_FSLS_STR-SLLAW2 sy-vline 
WA_FSLS_STR-SLLAW3 sy-vline 
WA_FSLS_STR-SLDOE sy-vline 
WA_FSLS_STR-SLDST sy-vline 
WA_FSLS_STR-SLDEN sy-vline 
WA_FSLS_STR-SLCM1 sy-vline 
WA_FSLS_STR-SLCM2 sy-vline 
WA_FSLS_STR-SLCM3 sy-vline 
WA_FSLS_STR-SLDCO sy-vline 
WA_FSLS_STR-SLDAE sy-vline 
WA_FSLS_STR-SLDZT sy-vline 
WA_FSLS_STR-SLAEN sy-vline 
WA_FSLS_STR-SLSER sy-vline 
WA_FSLS_STR-SLSRE sy-vline      INTO ld_text SEPARATED BY SPACE.

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