ABAP Select data from SAP table V_TSEGMAPP into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V_TSEGMAPP 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_TSEGMAPP. 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_TSEGMAPP 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_TSEGMAPP TYPE STANDARD TABLE OF V_TSEGMAPP,
      WA_V_TSEGMAPP TYPE V_TSEGMAPP,
      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_TSEGMAPP> TYPE V_TSEGMAPP.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_TSEGMAPP
*  INTO TABLE @DATA(IT_V_TSEGMAPP2).
*--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_TSEGMAPP INDEX 1 INTO DATA(WA_V_TSEGMAPP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_TSEGMAPP>-TIME = 1.
<V_TSEGMAPP>-EVEN_VERTY = 1.
<V_TSEGMAPP>-OBJE = 1.
<V_TSEGMAPP>-FIEL_NAMDA = 1.
<V_TSEGMAPP>-FIEL_NAMTI = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_TSEGMAPP-FIEL_NAMTS, sy-vline,
  WA_V_TSEGMAPP-FIEL_NAMTZ, sy-vline,
  WA_V_TSEGMAPP-PROJ, sy-vline,
  WA_V_TSEGMAPP-FLAG_INA, sy-vline,
  WA_V_TSEGMAPP-UNAM_CRE, sy-vline,
  WA_V_TSEGMAPP-TSTP_CRE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_TSEGMAPP 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_TSEGMAPP 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_TSEGMAPP INTO WA_V_TSEGMAPP.


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

*Conversion exit OBJAA, internal->external for field OBJE
CALL FUNCTION 'CONVERSION_EXIT_OBJAA_OUTPUT'
  EXPORTING
    input =                      WA_V_TSEGMAPP-OBJE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_TSEGMAPP-OBJE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PROJA, internal->external for field PROJ
CALL FUNCTION 'CONVERSION_EXIT_PROJA_OUTPUT'
  EXPORTING
    input =                      WA_V_TSEGMAPP-PROJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_TSEGMAPP-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_TSEGMAPP_STR, 
TIME TYPE STRING,
EVEN_VERTY TYPE STRING,
OBJE TYPE STRING,
FIEL_NAMDA TYPE STRING,
FIEL_NAMTI TYPE STRING,
FIEL_NAMTS TYPE STRING,
FIEL_NAMTZ TYPE STRING,
PROJ 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_TSEGMAPP_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_TSEGMAPP_STR-TIME sy-vline 
WA_V_TSEGMAPP_STR-EVEN_VERTY sy-vline 
WA_V_TSEGMAPP_STR-OBJE sy-vline 
WA_V_TSEGMAPP_STR-FIEL_NAMDA sy-vline 
WA_V_TSEGMAPP_STR-FIEL_NAMTI sy-vline 
WA_V_TSEGMAPP_STR-FIEL_NAMTS sy-vline 
WA_V_TSEGMAPP_STR-FIEL_NAMTZ sy-vline 
WA_V_TSEGMAPP_STR-PROJ sy-vline 
WA_V_TSEGMAPP_STR-FLAG_INA sy-vline 
WA_V_TSEGMAPP_STR-UNAM_CRE sy-vline 
WA_V_TSEGMAPP_STR-TSTP_CRE sy-vline 
WA_V_TSEGMAPP_STR-UNAM_CHA sy-vline 
WA_V_TSEGMAPP_STR-TSTP_CHA sy-vline 
WA_V_TSEGMAPP_STR-UNAM_INA sy-vline 
WA_V_TSEGMAPP_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.