ABAP Select data from SAP table ENTVPAR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ENTVPAR
*  INTO TABLE @DATA(IT_ENTVPAR2).
*--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_ENTVPAR INDEX 1 INTO DATA(WA_ENTVPAR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ENTVPAR>-ENTITY = 1.
<ENTVPAR>-ENTID = 1.
<ENTVPAR>-VERSION = 1.
<ENTVPAR>-VARIANT = 1.
<ENTVPAR>-VIEW = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ENTVPAR-KURZBEZ, sy-vline,
  WA_ENTVPAR-LANGBEZ, sy-vline,
  WA_ENTVPAR-GENENTID, sy-vline,
  WA_ENTVPAR-GENVERSION, sy-vline,
  WA_ENTVPAR-GENVARIANT, sy-vline,
  WA_ENTVPAR-GENVIEW, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ENTVPAR 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_ENTVPAR 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_ENTVPAR INTO WA_ENTVPAR.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_ENTVPAR_STR, 
ENTITY TYPE STRING,
ENTID TYPE STRING,
VERSION TYPE STRING,
VARIANT TYPE STRING,
VIEW TYPE STRING,
KURZBEZ TYPE STRING,
LANGBEZ TYPE STRING,
GENENTID TYPE STRING,
GENVERSION TYPE STRING,
GENVARIANT TYPE STRING,
GENVIEW TYPE STRING,
FLDCLASS TYPE STRING,
FLDCLASS2 TYPE STRING,
FLDINH TYPE STRING,
FLDREL TYPE STRING,
TABINH TYPE STRING,
SELINH TYPE STRING,
TAB01 TYPE STRING,
TAB02 TYPE STRING,
TAB03 TYPE STRING,
TAB04 TYPE STRING,
TAB05 TYPE STRING,
TAB06 TYPE STRING,
TAB07 TYPE STRING,
TAB08 TYPE STRING,
TAB09 TYPE STRING,
TAB10 TYPE STRING,
FLG_UDMNEW TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ENTVPAR_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_ENTVPAR_STR-ENTITY sy-vline 
WA_ENTVPAR_STR-ENTID sy-vline 
WA_ENTVPAR_STR-VERSION sy-vline 
WA_ENTVPAR_STR-VARIANT sy-vline 
WA_ENTVPAR_STR-VIEW sy-vline 
WA_ENTVPAR_STR-KURZBEZ sy-vline 
WA_ENTVPAR_STR-LANGBEZ sy-vline 
WA_ENTVPAR_STR-GENENTID sy-vline 
WA_ENTVPAR_STR-GENVERSION sy-vline 
WA_ENTVPAR_STR-GENVARIANT sy-vline 
WA_ENTVPAR_STR-GENVIEW sy-vline 
WA_ENTVPAR_STR-FLDCLASS sy-vline 
WA_ENTVPAR_STR-FLDCLASS2 sy-vline 
WA_ENTVPAR_STR-FLDINH sy-vline 
WA_ENTVPAR_STR-FLDREL sy-vline 
WA_ENTVPAR_STR-TABINH sy-vline 
WA_ENTVPAR_STR-SELINH sy-vline 
WA_ENTVPAR_STR-TAB01 sy-vline 
WA_ENTVPAR_STR-TAB02 sy-vline 
WA_ENTVPAR_STR-TAB03 sy-vline 
WA_ENTVPAR_STR-TAB04 sy-vline 
WA_ENTVPAR_STR-TAB05 sy-vline 
WA_ENTVPAR_STR-TAB06 sy-vline 
WA_ENTVPAR_STR-TAB07 sy-vline 
WA_ENTVPAR_STR-TAB08 sy-vline 
WA_ENTVPAR_STR-TAB09 sy-vline 
WA_ENTVPAR_STR-TAB10 sy-vline 
WA_ENTVPAR_STR-FLG_UDMNEW sy-vline      INTO ld_text SEPARATED BY SPACE.

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