ABAP Select data from SAP table VISCSETTL into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VISCSETTL 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 VISCSETTL. 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 VISCSETTL 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_VISCSETTL TYPE STANDARD TABLE OF VISCSETTL,
      WA_VISCSETTL TYPE VISCSETTL,
      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: <VISCSETTL> TYPE VISCSETTL.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VISCSETTL
*  INTO TABLE @DATA(IT_VISCSETTL2).
*--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_VISCSETTL INDEX 1 INTO DATA(WA_VISCSETTL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VISCSETTL>-MANDT = 1.
<VISCSETTL>-SETTL_GUID = 1.
<VISCSETTL>-SETTLMODE = 1.
<VISCSETTL>-SETTLTYPE = 1.
<VISCSETTL>-PURPOSE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VISCSETTL-FLG_REVERSAL, sy-vline,
  WA_VISCSETTL-PFROM, sy-vline,
  WA_VISCSETTL-PTO, sy-vline,
  WA_VISCSETTL-SPOOLNR, sy-vline,
  WA_VISCSETTL-SANPNR, sy-vline,
  WA_VISCSETTL-HEADERTXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VISCSETTL 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_VISCSETTL 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_VISCSETTL INTO WA_VISCSETTL.


*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 REDAT, internal->external for field PTO
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_VISCSETTL-PTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VISCSETTL-PTO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VERSION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VISCSETTL-VERSION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VISCSETTL-VERSION.
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_VISCSETTL_STR, 
MANDT TYPE STRING,
SETTL_GUID TYPE STRING,
SETTLMODE TYPE STRING,
SETTLTYPE TYPE STRING,
PURPOSE TYPE STRING,
FLG_REVERSAL TYPE STRING,
PFROM TYPE STRING,
PTO TYPE STRING,
SPOOLNR TYPE STRING,
SANPNR TYPE STRING,
HEADERTXT TYPE STRING,
PSTNGDATE TYPE STRING,
DOCDATE TYPE STRING,
BLINEDATE TYPE STRING,
DTAPE_ACCESS TYPE STRING,
DTAPE_NAME TYPE STRING,
MLTAPE_SORTBY TYPE STRING,
MLTAPE_ACCESS TYPE STRING,
MLTAPE_NAME TYPE STRING,
LAST_STEP TYPE STRING,
PARAMKEY TYPE STRING,
DOCCOUNTER TYPE STRING,
AJPROCESSGUID TYPE STRING,
KEYDATECOP TYPE STRING,
TAXDATE TYPE STRING,
CHRGPERC TYPE STRING,
VERSION TYPE STRING,
MEASKEYDATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VISCSETTL_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_VISCSETTL_STR-MANDT sy-vline 
WA_VISCSETTL_STR-SETTL_GUID sy-vline 
WA_VISCSETTL_STR-SETTLMODE sy-vline 
WA_VISCSETTL_STR-SETTLTYPE sy-vline 
WA_VISCSETTL_STR-PURPOSE sy-vline 
WA_VISCSETTL_STR-FLG_REVERSAL sy-vline 
WA_VISCSETTL_STR-PFROM sy-vline 
WA_VISCSETTL_STR-PTO sy-vline 
WA_VISCSETTL_STR-SPOOLNR sy-vline 
WA_VISCSETTL_STR-SANPNR sy-vline 
WA_VISCSETTL_STR-HEADERTXT sy-vline 
WA_VISCSETTL_STR-PSTNGDATE sy-vline 
WA_VISCSETTL_STR-DOCDATE sy-vline 
WA_VISCSETTL_STR-BLINEDATE sy-vline 
WA_VISCSETTL_STR-DTAPE_ACCESS sy-vline 
WA_VISCSETTL_STR-DTAPE_NAME sy-vline 
WA_VISCSETTL_STR-MLTAPE_SORTBY sy-vline 
WA_VISCSETTL_STR-MLTAPE_ACCESS sy-vline 
WA_VISCSETTL_STR-MLTAPE_NAME sy-vline 
WA_VISCSETTL_STR-LAST_STEP sy-vline 
WA_VISCSETTL_STR-PARAMKEY sy-vline 
WA_VISCSETTL_STR-DOCCOUNTER sy-vline 
WA_VISCSETTL_STR-AJPROCESSGUID sy-vline 
WA_VISCSETTL_STR-KEYDATECOP sy-vline 
WA_VISCSETTL_STR-TAXDATE sy-vline 
WA_VISCSETTL_STR-CHRGPERC sy-vline 
WA_VISCSETTL_STR-VERSION sy-vline 
WA_VISCSETTL_STR-MEASKEYDATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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