ABAP Select data from SAP table V_TSEGEVTY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_TSEGEVTY
*  INTO TABLE @DATA(IT_V_TSEGEVTY2).
*--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_V_TSEGEVTY INDEX 1 INTO DATA(WA_V_TSEGEVTY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_TSEGEVTY>-EVEN = 1.
<V_TSEGEVTY>-EVEN_ALI = 1.
<V_TSEGEVTY>-EVEN_TIMFR = 1.
<V_TSEGEVTY>-EVEN_TIMTO = 1.
<V_TSEGEVTY>-EVEN_DUR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_TSEGEVTY-EVEN_DTEF1, sy-vline,
  WA_V_TSEGEVTY-EVEN_FLGMS, sy-vline,
  WA_V_TSEGEVTY-EVEN_FLGMU, sy-vline,
  WA_V_TSEGEVTY-PROJ, sy-vline,
  WA_V_TSEGEVTY-TEXT_40, sy-vline,
  WA_V_TSEGEVTY-FLAG_INA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_TSEGEVTY 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_V_TSEGEVTY 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_V_TSEGEVTY INTO WA_V_TSEGEVTY.


*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 EVTYA, internal->external for field EVEN
CALL FUNCTION 'CONVERSION_EXIT_EVTYA_OUTPUT'
  EXPORTING
    input =                      WA_V_TSEGEVTY-EVEN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_TSEGEVTY-EVEN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TIMEA, internal->external for field EVEN_TIMFR
CALL FUNCTION 'CONVERSION_EXIT_TIMEA_OUTPUT'
  EXPORTING
    input =                      WA_V_TSEGEVTY-EVEN_TIMFR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_TSEGEVTY-EVEN_TIMFR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TIMEA, internal->external for field EVEN_TIMTO
CALL FUNCTION 'CONVERSION_EXIT_TIMEA_OUTPUT'
  EXPORTING
    input =                      WA_V_TSEGEVTY-EVEN_TIMTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_TSEGEVTY-EVEN_TIMTO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit DURAA, internal->external for field EVEN_DUR
CALL FUNCTION 'CONVERSION_EXIT_DURAA_OUTPUT'
  EXPORTING
    input =                      WA_V_TSEGEVTY-EVEN_DUR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_TSEGEVTY-EVEN_DUR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PROJA, internal->external for field PROJ
CALL FUNCTION 'CONVERSION_EXIT_PROJA_OUTPUT'
  EXPORTING
    input =                      WA_V_TSEGEVTY-PROJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_TSEGEVTY-PROJ.
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_V_TSEGEVTY_STR, 
EVEN TYPE STRING,
EVEN_ALI TYPE STRING,
EVEN_TIMFR TYPE STRING,
EVEN_TIMTO TYPE STRING,
EVEN_DUR TYPE STRING,
EVEN_DTEF1 TYPE STRING,
EVEN_FLGMS TYPE STRING,
EVEN_FLGMU TYPE STRING,
PROJ TYPE STRING,
TEXT_40 TYPE STRING,
FLAG_INA TYPE STRING,
UNAM_CRE TYPE STRING,
TSTP_CRE TYPE STRING,
UNAM_CHA TYPE STRING,
TSTP_CHA TYPE STRING,
UNAM_INA TYPE STRING,
TSTP_INA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_TSEGEVTY_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_V_TSEGEVTY_STR-EVEN sy-vline 
WA_V_TSEGEVTY_STR-EVEN_ALI sy-vline 
WA_V_TSEGEVTY_STR-EVEN_TIMFR sy-vline 
WA_V_TSEGEVTY_STR-EVEN_TIMTO sy-vline 
WA_V_TSEGEVTY_STR-EVEN_DUR sy-vline 
WA_V_TSEGEVTY_STR-EVEN_DTEF1 sy-vline 
WA_V_TSEGEVTY_STR-EVEN_FLGMS sy-vline 
WA_V_TSEGEVTY_STR-EVEN_FLGMU sy-vline 
WA_V_TSEGEVTY_STR-PROJ sy-vline 
WA_V_TSEGEVTY_STR-TEXT_40 sy-vline 
WA_V_TSEGEVTY_STR-FLAG_INA sy-vline 
WA_V_TSEGEVTY_STR-UNAM_CRE sy-vline 
WA_V_TSEGEVTY_STR-TSTP_CRE sy-vline 
WA_V_TSEGEVTY_STR-UNAM_CHA sy-vline 
WA_V_TSEGEVTY_STR-TSTP_CHA sy-vline 
WA_V_TSEGEVTY_STR-UNAM_INA sy-vline 
WA_V_TSEGEVTY_STR-TSTP_INA sy-vline      INTO ld_text SEPARATED BY SPACE.

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