ABAP Select data from SAP table ENVI_TYPES into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ENVI_TYPES
*  INTO TABLE @DATA(IT_ENVI_TYPES2).
*--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_ENVI_TYPES INDEX 1 INTO DATA(WA_ENVI_TYPES2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ENVI_TYPES>-PROG = 1.
<ENVI_TYPES>-FUGR = 1.
<ENVI_TYPES>-LDBA = 1.
<ENVI_TYPES>-MSAG = 1.
<ENVI_TYPES>-TRAN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ENVI_TYPES-FUNC, sy-vline,
  WA_ENVI_TYPES-DIAL, sy-vline,
  WA_ENVI_TYPES-TABL, sy-vline,
  WA_ENVI_TYPES-SHLP, sy-vline,
  WA_ENVI_TYPES-DOMA, sy-vline,
  WA_ENVI_TYPES-DTEL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ENVI_TYPES 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_ENVI_TYPES 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_ENVI_TYPES INTO WA_ENVI_TYPES.


*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_ENVI_TYPES_STR, 
PROG TYPE STRING,
FUGR TYPE STRING,
LDBA TYPE STRING,
MSAG TYPE STRING,
TRAN TYPE STRING,
FUNC TYPE STRING,
DIAL TYPE STRING,
TABL TYPE STRING,
SHLP TYPE STRING,
DOMA TYPE STRING,
DTEL TYPE STRING,
VIEW TYPE STRING,
MCOB TYPE STRING,
MCID TYPE STRING,
PARA TYPE STRING,
CONV TYPE STRING,
SUSO TYPE STRING,
TYPE TYPE STRING,
TTYP TYPE STRING,
STRU TYPE STRING,
ENQU TYPE STRING,
SQLT TYPE STRING,
CLAS TYPE STRING,
INTF TYPE STRING,
UDMO TYPE STRING,
UENO TYPE STRING,
SHI3 TYPE STRING,
CNTX TYPE STRING,
TTAB TYPE STRING,
IASP TYPE STRING,
IAMU TYPE STRING,
IATU TYPE STRING,
CLIF TYPE STRING,
SOBJ TYPE STRING,
WDYN TYPE STRING,
WDYA TYPE STRING,
XSLT TYPE STRING,
ENHS TYPE STRING,
ENSC TYPE STRING,
ENHC TYPE STRING,
ENHO TYPE STRING,
SFBF TYPE STRING,
SFSW TYPE STRING,
DEVC TYPE STRING,
SQSC TYPE STRING,
STOB TYPE STRING,
DDLS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ENVI_TYPES_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_ENVI_TYPES_STR-PROG sy-vline 
WA_ENVI_TYPES_STR-FUGR sy-vline 
WA_ENVI_TYPES_STR-LDBA sy-vline 
WA_ENVI_TYPES_STR-MSAG sy-vline 
WA_ENVI_TYPES_STR-TRAN sy-vline 
WA_ENVI_TYPES_STR-FUNC sy-vline 
WA_ENVI_TYPES_STR-DIAL sy-vline 
WA_ENVI_TYPES_STR-TABL sy-vline 
WA_ENVI_TYPES_STR-SHLP sy-vline 
WA_ENVI_TYPES_STR-DOMA sy-vline 
WA_ENVI_TYPES_STR-DTEL sy-vline 
WA_ENVI_TYPES_STR-VIEW sy-vline 
WA_ENVI_TYPES_STR-MCOB sy-vline 
WA_ENVI_TYPES_STR-MCID sy-vline 
WA_ENVI_TYPES_STR-PARA sy-vline 
WA_ENVI_TYPES_STR-CONV sy-vline 
WA_ENVI_TYPES_STR-SUSO sy-vline 
WA_ENVI_TYPES_STR-TYPE sy-vline 
WA_ENVI_TYPES_STR-TTYP sy-vline 
WA_ENVI_TYPES_STR-STRU sy-vline 
WA_ENVI_TYPES_STR-ENQU sy-vline 
WA_ENVI_TYPES_STR-SQLT sy-vline 
WA_ENVI_TYPES_STR-CLAS sy-vline 
WA_ENVI_TYPES_STR-INTF sy-vline 
WA_ENVI_TYPES_STR-UDMO sy-vline 
WA_ENVI_TYPES_STR-UENO sy-vline 
WA_ENVI_TYPES_STR-SHI3 sy-vline 
WA_ENVI_TYPES_STR-CNTX sy-vline 
WA_ENVI_TYPES_STR-TTAB sy-vline 
WA_ENVI_TYPES_STR-IASP sy-vline 
WA_ENVI_TYPES_STR-IAMU sy-vline 
WA_ENVI_TYPES_STR-IATU sy-vline 
WA_ENVI_TYPES_STR-CLIF sy-vline 
WA_ENVI_TYPES_STR-SOBJ sy-vline 
WA_ENVI_TYPES_STR-WDYN sy-vline 
WA_ENVI_TYPES_STR-WDYA sy-vline 
WA_ENVI_TYPES_STR-XSLT sy-vline 
WA_ENVI_TYPES_STR-ENHS sy-vline 
WA_ENVI_TYPES_STR-ENSC sy-vline 
WA_ENVI_TYPES_STR-ENHC sy-vline 
WA_ENVI_TYPES_STR-ENHO sy-vline 
WA_ENVI_TYPES_STR-SFBF sy-vline 
WA_ENVI_TYPES_STR-SFSW sy-vline 
WA_ENVI_TYPES_STR-DEVC sy-vline 
WA_ENVI_TYPES_STR-SQSC sy-vline 
WA_ENVI_TYPES_STR-STOB sy-vline 
WA_ENVI_TYPES_STR-DDLS sy-vline      INTO ld_text SEPARATED BY SPACE.

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