ABAP Select data from SAP table TRVOF into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TRVOF
*  INTO TABLE @DATA(IT_TRVOF2).
*--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_TRVOF INDEX 1 INTO DATA(WA_TRVOF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TRVOF>-BNAME = 1.
<TRVOF>-PERSNUMBER = 1.
<TRVOF>-ADDRNUMBER = 1.
<TRVOF>-SO_KEY = 1.
<TRVOF>-BUILDING_C = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TRVOF-IH_MAIL, sy-vline,
  WA_TRVOF-NAMCOUNTRY, sy-vline,
  WA_TRVOF-PERSORIGIN, sy-vline,
  WA_TRVOF-ADDR_COMP, sy-vline,
  WA_TRVOF-CITY_CODE, sy-vline,
  WA_TRVOF-CITYP_CODE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TRVOF 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_TRVOF 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_TRVOF INTO WA_TRVOF.


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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field CITY_CODE2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TRVOF-CITY_CODE2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRVOF-CITY_CODE2.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ALPHA, internal->external for field SGMNT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TRVOF-SGMNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRVOF-SGMNT.
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_TRVOF_STR, 
BNAME TYPE STRING,
PERSNUMBER TYPE STRING,
ADDRNUMBER TYPE STRING,
SO_KEY TYPE STRING,
BUILDING_C TYPE STRING,
IH_MAIL TYPE STRING,
NAMCOUNTRY TYPE STRING,
PERSORIGIN TYPE STRING,
ADDR_COMP TYPE STRING,
CITY_CODE TYPE STRING,
CITYP_CODE TYPE STRING,
CITYH_CODE TYPE STRING,
REGIOGROUP TYPE STRING,
POST_CODE1 TYPE STRING,
POST_CODE2 TYPE STRING,
POST_CODE3 TYPE STRING,
PCODE1_EXT TYPE STRING,
PCODE2_EXT TYPE STRING,
PCODE3_EXT TYPE STRING,
PO_BOX TYPE STRING,
CITY_CODE2 TYPE STRING,
PO_BOX_REG TYPE STRING,
PO_BOX_CTY TYPE STRING,
POSTALAREA TYPE STRING,
TRANSPZONE TYPE STRING,
COUNTRY TYPE STRING,
REGION TYPE STRING,
ADDRORIGIN TYPE STRING,
TIME_ZONE TYPE STRING,
TAXJURCODE TYPE STRING,
ADDRESS_ID TYPE STRING,
PERS_GROUP TYPE STRING,
ADDR_GROUP TYPE STRING,
USERG TYPE STRING,
OFFICE_FIND TYPE STRING,
PERNR TYPE STRING,
BUKRS TYPE STRING,
WERKS TYPE STRING,
PERSG TYPE STRING,
PERSK TYPE STRING,
VDSK1 TYPE STRING,
GSBER TYPE STRING,
BTRTL TYPE STRING,
JUPER TYPE STRING,
ABKRS TYPE STRING,
ANSVH TYPE STRING,
KOSTL TYPE STRING,
ORGEH TYPE STRING,
PLANS TYPE STRING,
STELL TYPE STRING,
MSTBR TYPE STRING,
SACHA TYPE STRING,
SACHP TYPE STRING,
SACHZ TYPE STRING,
SNAME TYPE STRING,
ENAME TYPE STRING,
OTYPE TYPE STRING,
SBMOD TYPE STRING,
KOKRS TYPE STRING,
FISTL TYPE STRING,
GEBER TYPE STRING,
FKBER TYPE STRING,
GRANT_NBR TYPE STRING,
SGMNT TYPE STRING,
BUDGET_PD TYPE STRING,
PTZUO TYPE STRING,
TCODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TRVOF_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_TRVOF_STR-BNAME sy-vline 
WA_TRVOF_STR-PERSNUMBER sy-vline 
WA_TRVOF_STR-ADDRNUMBER sy-vline 
WA_TRVOF_STR-SO_KEY sy-vline 
WA_TRVOF_STR-BUILDING_C sy-vline 
WA_TRVOF_STR-IH_MAIL sy-vline 
WA_TRVOF_STR-NAMCOUNTRY sy-vline 
WA_TRVOF_STR-PERSORIGIN sy-vline 
WA_TRVOF_STR-ADDR_COMP sy-vline 
WA_TRVOF_STR-CITY_CODE sy-vline 
WA_TRVOF_STR-CITYP_CODE sy-vline 
WA_TRVOF_STR-CITYH_CODE sy-vline 
WA_TRVOF_STR-REGIOGROUP sy-vline 
WA_TRVOF_STR-POST_CODE1 sy-vline 
WA_TRVOF_STR-POST_CODE2 sy-vline 
WA_TRVOF_STR-POST_CODE3 sy-vline 
WA_TRVOF_STR-PCODE1_EXT sy-vline 
WA_TRVOF_STR-PCODE2_EXT sy-vline 
WA_TRVOF_STR-PCODE3_EXT sy-vline 
WA_TRVOF_STR-PO_BOX sy-vline 
WA_TRVOF_STR-CITY_CODE2 sy-vline 
WA_TRVOF_STR-PO_BOX_REG sy-vline 
WA_TRVOF_STR-PO_BOX_CTY sy-vline 
WA_TRVOF_STR-POSTALAREA sy-vline 
WA_TRVOF_STR-TRANSPZONE sy-vline 
WA_TRVOF_STR-COUNTRY sy-vline 
WA_TRVOF_STR-REGION sy-vline 
WA_TRVOF_STR-ADDRORIGIN sy-vline 
WA_TRVOF_STR-TIME_ZONE sy-vline 
WA_TRVOF_STR-TAXJURCODE sy-vline 
WA_TRVOF_STR-ADDRESS_ID sy-vline 
WA_TRVOF_STR-PERS_GROUP sy-vline 
WA_TRVOF_STR-ADDR_GROUP sy-vline 
WA_TRVOF_STR-USERG sy-vline 
WA_TRVOF_STR-OFFICE_FIND sy-vline 
WA_TRVOF_STR-PERNR sy-vline 
WA_TRVOF_STR-BUKRS sy-vline 
WA_TRVOF_STR-WERKS sy-vline 
WA_TRVOF_STR-PERSG sy-vline 
WA_TRVOF_STR-PERSK sy-vline 
WA_TRVOF_STR-VDSK1 sy-vline 
WA_TRVOF_STR-GSBER sy-vline 
WA_TRVOF_STR-BTRTL sy-vline 
WA_TRVOF_STR-JUPER sy-vline 
WA_TRVOF_STR-ABKRS sy-vline 
WA_TRVOF_STR-ANSVH sy-vline 
WA_TRVOF_STR-KOSTL sy-vline 
WA_TRVOF_STR-ORGEH sy-vline 
WA_TRVOF_STR-PLANS sy-vline 
WA_TRVOF_STR-STELL sy-vline 
WA_TRVOF_STR-MSTBR sy-vline 
WA_TRVOF_STR-SACHA sy-vline 
WA_TRVOF_STR-SACHP sy-vline 
WA_TRVOF_STR-SACHZ sy-vline 
WA_TRVOF_STR-SNAME sy-vline 
WA_TRVOF_STR-ENAME sy-vline 
WA_TRVOF_STR-OTYPE sy-vline 
WA_TRVOF_STR-SBMOD sy-vline 
WA_TRVOF_STR-KOKRS sy-vline 
WA_TRVOF_STR-FISTL sy-vline 
WA_TRVOF_STR-GEBER sy-vline 
WA_TRVOF_STR-FKBER sy-vline 
WA_TRVOF_STR-GRANT_NBR sy-vline 
WA_TRVOF_STR-SGMNT sy-vline 
WA_TRVOF_STR-BUDGET_PD sy-vline 
WA_TRVOF_STR-PTZUO sy-vline 
WA_TRVOF_STR-TCODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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