ABAP Select data from SAP table RFVIEXSO 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 RFVIEXSO 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 RFVIEXSO. 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 RFVIEXSO 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_RFVIEXSO TYPE STANDARD TABLE OF RFVIEXSO,
      WA_RFVIEXSO TYPE RFVIEXSO,
      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: <RFVIEXSO> TYPE RFVIEXSO.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RFVIEXSO
*  INTO TABLE @DATA(IT_RFVIEXSO2).
*--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_RFVIEXSO INDEX 1 INTO DATA(WA_RFVIEXSO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RFVIEXSO>-BUKRS = 1.
<RFVIEXSO>-SWENR = 1.
<RFVIEXSO>-SGENR = 1.
<RFVIEXSO>-SGRNR = 1.
<RFVIEXSO>-SMENR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RFVIEXSO-SMIVE, sy-vline,
  WA_RFVIEXSO-SVWNR, sy-vline,
  WA_RFVIEXSO-RECNNR, sy-vline,
  WA_RFVIEXSO-RECNTYPE, sy-vline,
  WA_RFVIEXSO-SNKSL, sy-vline,
  WA_RFVIEXSO-SEMPSL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RFVIEXSO 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_RFVIEXSO 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_RFVIEXSO INTO WA_RFVIEXSO.


*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 SWENR, internal->external for field SWENR
CALL FUNCTION 'CONVERSION_EXIT_SWENR_OUTPUT'
  EXPORTING
    input =                      WA_RFVIEXSO-SWENR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFVIEXSO-SWENR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field SEMPSL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFVIEXSO-SEMPSL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFVIEXSO-SEMPSL.
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_RFVIEXSO_STR, 
BUKRS TYPE STRING,
SWENR TYPE STRING,
SGENR TYPE STRING,
SGRNR TYPE STRING,
SMENR TYPE STRING,
SMIVE TYPE STRING,
SVWNR TYPE STRING,
RECNNR TYPE STRING,
RECNTYPE TYPE STRING,
SNKSL TYPE STRING,
SEMPSL TYPE STRING,
DABRBEZ TYPE STRING,
SOBART TYPE STRING,
DVONBIS TYPE STRING,
DVONDAT TYPE STRING,
DBISDAT TYPE STRING,
DSTCHTAG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RFVIEXSO_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_RFVIEXSO_STR-BUKRS sy-vline 
WA_RFVIEXSO_STR-SWENR sy-vline 
WA_RFVIEXSO_STR-SGENR sy-vline 
WA_RFVIEXSO_STR-SGRNR sy-vline 
WA_RFVIEXSO_STR-SMENR sy-vline 
WA_RFVIEXSO_STR-SMIVE sy-vline 
WA_RFVIEXSO_STR-SVWNR sy-vline 
WA_RFVIEXSO_STR-RECNNR sy-vline 
WA_RFVIEXSO_STR-RECNTYPE sy-vline 
WA_RFVIEXSO_STR-SNKSL sy-vline 
WA_RFVIEXSO_STR-SEMPSL sy-vline 
WA_RFVIEXSO_STR-DABRBEZ sy-vline 
WA_RFVIEXSO_STR-SOBART sy-vline 
WA_RFVIEXSO_STR-DVONBIS sy-vline 
WA_RFVIEXSO_STR-DVONDAT sy-vline 
WA_RFVIEXSO_STR-DBISDAT sy-vline 
WA_RFVIEXSO_STR-DSTCHTAG sy-vline      INTO ld_text SEPARATED BY SPACE.

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