ABAP Select data from SAP table SETST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SETST
*  INTO TABLE @DATA(IT_SETST2).
*--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_SETST INDEX 1 INTO DATA(WA_SETST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SETST>-SEQNR = 1.
<SETST>-LINE = 1.
<SETST>-LEVEL = 1.
<SETST>-FIELD = 1.
<SETST>-SETNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SETST-TYPE, sy-vline,
  WA_SETST-XDYNAMIC, sy-vline,
  WA_SETST-XSINGLEVAL, sy-vline,
  WA_SETST-FLAG, sy-vline,
  WA_SETST-UNIQUE, sy-vline,
  WA_SETST-PTUP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SETST 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_SETST 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_SETST INTO WA_SETST.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_SETST_STR, 
SEQNR TYPE STRING,
LINE TYPE STRING,
LEVEL TYPE STRING,
FIELD TYPE STRING,
SETNR TYPE STRING,
TYPE TYPE STRING,
XDYNAMIC TYPE STRING,
XSINGLEVAL TYPE STRING,
FLAG TYPE STRING,
UNIQUE TYPE STRING,
PTUP TYPE STRING,
PUP TYPE STRING,
PTDOWN TYPE STRING,
PDOWN TYPE STRING,
PNEXT TYPE STRING,
PPREV TYPE STRING,
VCOUNT TYPE STRING,
MIN TYPE STRING,
MAX TYPE STRING,
MAXPTUP TYPE STRING,
MAXPUP TYPE STRING,
MAXLINE TYPE STRING,
TABLE TYPE STRING,
OPDOWN TYPE STRING,
OCOUNT TYPE STRING,
PUSED TYPE STRING,
ISUNIQUE TYPE STRING,
IFLAG TYPE STRING,
LNAME TYPE STRING,
SNAME TYPE STRING,
SLEVEL TYPE STRING,
PRTCLASS TYPE STRING,
PMFLAG TYPE STRING,
TEXTNR TYPE STRING,
RVALUE TYPE STRING,
AUTHGR TYPE STRING,
SEARCHFLD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SETST_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_SETST_STR-SEQNR sy-vline 
WA_SETST_STR-LINE sy-vline 
WA_SETST_STR-LEVEL sy-vline 
WA_SETST_STR-FIELD sy-vline 
WA_SETST_STR-SETNR sy-vline 
WA_SETST_STR-TYPE sy-vline 
WA_SETST_STR-XDYNAMIC sy-vline 
WA_SETST_STR-XSINGLEVAL sy-vline 
WA_SETST_STR-FLAG sy-vline 
WA_SETST_STR-UNIQUE sy-vline 
WA_SETST_STR-PTUP sy-vline 
WA_SETST_STR-PUP sy-vline 
WA_SETST_STR-PTDOWN sy-vline 
WA_SETST_STR-PDOWN sy-vline 
WA_SETST_STR-PNEXT sy-vline 
WA_SETST_STR-PPREV sy-vline 
WA_SETST_STR-VCOUNT sy-vline 
WA_SETST_STR-MIN sy-vline 
WA_SETST_STR-MAX sy-vline 
WA_SETST_STR-MAXPTUP sy-vline 
WA_SETST_STR-MAXPUP sy-vline 
WA_SETST_STR-MAXLINE sy-vline 
WA_SETST_STR-TABLE sy-vline 
WA_SETST_STR-OPDOWN sy-vline 
WA_SETST_STR-OCOUNT sy-vline 
WA_SETST_STR-PUSED sy-vline 
WA_SETST_STR-ISUNIQUE sy-vline 
WA_SETST_STR-IFLAG sy-vline 
WA_SETST_STR-LNAME sy-vline 
WA_SETST_STR-SNAME sy-vline 
WA_SETST_STR-SLEVEL sy-vline 
WA_SETST_STR-PRTCLASS sy-vline 
WA_SETST_STR-PMFLAG sy-vline 
WA_SETST_STR-TEXTNR sy-vline 
WA_SETST_STR-RVALUE sy-vline 
WA_SETST_STR-AUTHGR sy-vline 
WA_SETST_STR-SEARCHFLD sy-vline      INTO ld_text SEPARATED BY SPACE.

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