ABAP Select data from SAP table VTVESSP_LI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VTVESSP_LI
*  INTO TABLE @DATA(IT_VTVESSP_LI2).
*--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_VTVESSP_LI INDEX 1 INTO DATA(WA_VTVESSP_LI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VTVESSP_LI>-MANDT = 1.
<VTVESSP_LI>-SLA = 1.
<VTVESSP_LI>-RLV = 1.
<VTVESSP_LI>-SLH = 1.
<VTVESSP_LI>-DLVB = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VTVESSP_LI-DLVE, sy-vline,
  WA_VTVESSP_LI-BLIMIT, sy-vline,
  WA_VTVESSP_LI-ELIMIT, sy-vline,
  WA_VTVESSP_LI-WLIMIT, sy-vline,
  WA_VTVESSP_LI-PROZLIMIT, sy-vline,
  WA_VTVESSP_LI-COMPERD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VTVESSP_LI 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_VTVESSP_LI 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_VTVESSP_LI INTO WA_VTVESSP_LI.


*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 PARTNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VTVESSP_LI-PARTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VTVESSP_LI-PARTNR.
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_VTVESSP_LI_STR, 
MANDT TYPE STRING,
SLA TYPE STRING,
RLV TYPE STRING,
SLH TYPE STRING,
DLVB TYPE STRING,
DLVE TYPE STRING,
BLIMIT TYPE STRING,
ELIMIT TYPE STRING,
WLIMIT TYPE STRING,
PROZLIMIT TYPE STRING,
COMPERD TYPE STRING,
VLO TYPE STRING,
RELSTATE TYPE STRING,
RELUSER TYPE STRING,
RESUBDATE TYPE STRING,
RESUBUSER TYPE STRING,
ARSMD TYPE STRING,
NOTES_EXIST TYPE STRING,
INFINITE TYPE STRING,
EDLVE TYPE STRING,
BUKRS TYPE STRING,
PARTNR TYPE STRING,
SLPG TYPE STRING,
RPORTB TYPE STRING,
RDEALER TYPE STRING,
WAERS TYPE STRING,
CONTROL01 TYPE STRING,
INTORG TYPE STRING,
RCOUNTRY TYPE STRING,
COUNTRY TYPE STRING,
SECTOR TYPE STRING,
RATING TYPE STRING,
CRATING TYPE STRING,
LLOCK TYPE STRING,
LLUSER TYPE STRING,
SLI TYPE STRING,
VLI TYPE STRING,
BLI TYPE STRING,
CLI TYPE STRING,
BLS TYPE STRING,
WLI TYPE STRING,
COMPERD_DEC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VTVESSP_LI_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_VTVESSP_LI_STR-MANDT sy-vline 
WA_VTVESSP_LI_STR-SLA sy-vline 
WA_VTVESSP_LI_STR-RLV sy-vline 
WA_VTVESSP_LI_STR-SLH sy-vline 
WA_VTVESSP_LI_STR-DLVB sy-vline 
WA_VTVESSP_LI_STR-DLVE sy-vline 
WA_VTVESSP_LI_STR-BLIMIT sy-vline 
WA_VTVESSP_LI_STR-ELIMIT sy-vline 
WA_VTVESSP_LI_STR-WLIMIT sy-vline 
WA_VTVESSP_LI_STR-PROZLIMIT sy-vline 
WA_VTVESSP_LI_STR-COMPERD sy-vline 
WA_VTVESSP_LI_STR-VLO sy-vline 
WA_VTVESSP_LI_STR-RELSTATE sy-vline 
WA_VTVESSP_LI_STR-RELUSER sy-vline 
WA_VTVESSP_LI_STR-RESUBDATE sy-vline 
WA_VTVESSP_LI_STR-RESUBUSER sy-vline 
WA_VTVESSP_LI_STR-ARSMD sy-vline 
WA_VTVESSP_LI_STR-NOTES_EXIST sy-vline 
WA_VTVESSP_LI_STR-INFINITE sy-vline 
WA_VTVESSP_LI_STR-EDLVE sy-vline 
WA_VTVESSP_LI_STR-BUKRS sy-vline 
WA_VTVESSP_LI_STR-PARTNR sy-vline 
WA_VTVESSP_LI_STR-SLPG sy-vline 
WA_VTVESSP_LI_STR-RPORTB sy-vline 
WA_VTVESSP_LI_STR-RDEALER sy-vline 
WA_VTVESSP_LI_STR-WAERS sy-vline 
WA_VTVESSP_LI_STR-CONTROL01 sy-vline 
WA_VTVESSP_LI_STR-INTORG sy-vline 
WA_VTVESSP_LI_STR-RCOUNTRY sy-vline 
WA_VTVESSP_LI_STR-COUNTRY sy-vline 
WA_VTVESSP_LI_STR-SECTOR sy-vline 
WA_VTVESSP_LI_STR-RATING sy-vline 
WA_VTVESSP_LI_STR-CRATING sy-vline 
WA_VTVESSP_LI_STR-LLOCK sy-vline 
WA_VTVESSP_LI_STR-LLUSER sy-vline 
WA_VTVESSP_LI_STR-SLI sy-vline 
WA_VTVESSP_LI_STR-VLI sy-vline 
WA_VTVESSP_LI_STR-BLI sy-vline 
WA_VTVESSP_LI_STR-CLI sy-vline 
WA_VTVESSP_LI_STR-BLS sy-vline 
WA_VTVESSP_LI_STR-WLI sy-vline 
WA_VTVESSP_LI_STR-COMPERD_DEC sy-vline      INTO ld_text SEPARATED BY SPACE.

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