ABAP Select data from SAP table INFO_VARI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM INFO_VARI
*  INTO TABLE @DATA(IT_INFO_VARI2).
*--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_INFO_VARI INDEX 1 INTO DATA(WA_INFO_VARI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<INFO_VARI>-MANDT = 1.
<INFO_VARI>-REPORT = 1.
<INFO_VARI>-VARIANT = 1.
<INFO_VARI>-FLAG1 = 1.
<INFO_VARI>-FLAG2 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_INFO_VARI-ENVIRONMNT, sy-vline,
  WA_INFO_VARI-PROTECTED, sy-vline,
  WA_INFO_VARI-SECU, sy-vline,
  WA_INFO_VARI-TRANSPORT, sy-vline,
  WA_INFO_VARI-VERSION, sy-vline,
  WA_INFO_VARI-ENAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_INFO_VARI 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_INFO_VARI 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_INFO_VARI INTO WA_INFO_VARI.


*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 ISOLA, internal->external for field MLANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_INFO_VARI-MLANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_INFO_VARI-MLANGU.
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_INFO_VARI_STR, 
MANDT TYPE STRING,
REPORT TYPE STRING,
VARIANT TYPE STRING,
FLAG1 TYPE STRING,
FLAG2 TYPE STRING,
ENVIRONMNT TYPE STRING,
PROTECTED TYPE STRING,
SECU TYPE STRING,
TRANSPORT TYPE STRING,
VERSION TYPE STRING,
ENAME TYPE STRING,
EDAT TYPE STRING,
ETIME TYPE STRING,
AENAME TYPE STRING,
AEDAT TYPE STRING,
AETIME TYPE STRING,
MLANGU TYPE STRING,
DEVCLASS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_INFO_VARI_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_INFO_VARI_STR-MANDT sy-vline 
WA_INFO_VARI_STR-REPORT sy-vline 
WA_INFO_VARI_STR-VARIANT sy-vline 
WA_INFO_VARI_STR-FLAG1 sy-vline 
WA_INFO_VARI_STR-FLAG2 sy-vline 
WA_INFO_VARI_STR-ENVIRONMNT sy-vline 
WA_INFO_VARI_STR-PROTECTED sy-vline 
WA_INFO_VARI_STR-SECU sy-vline 
WA_INFO_VARI_STR-TRANSPORT sy-vline 
WA_INFO_VARI_STR-VERSION sy-vline 
WA_INFO_VARI_STR-ENAME sy-vline 
WA_INFO_VARI_STR-EDAT sy-vline 
WA_INFO_VARI_STR-ETIME sy-vline 
WA_INFO_VARI_STR-AENAME sy-vline 
WA_INFO_VARI_STR-AEDAT sy-vline 
WA_INFO_VARI_STR-AETIME sy-vline 
WA_INFO_VARI_STR-MLANGU sy-vline 
WA_INFO_VARI_STR-DEVCLASS sy-vline      INTO ld_text SEPARATED BY SPACE.

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