ABAP Select data from SAP table EDESK_INST_DIR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EDESK_INST_DIR
*  INTO TABLE @DATA(IT_EDESK_INST_DIR2).
*--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_EDESK_INST_DIR INDEX 1 INTO DATA(WA_EDESK_INST_DIR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EDESK_INST_DIR>-MANDT = 1.
<EDESK_INST_DIR>-GUIDX = 1.
<EDESK_INST_DIR>-CNT = 1.
<EDESK_INST_DIR>-INSTGUID_BOM = 1.
<EDESK_INST_DIR>-LOCOX = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EDESK_INST_DIR-LOCOY, sy-vline,
  WA_EDESK_INST_DIR-LOCOZ, sy-vline,
  WA_EDESK_INST_DIR-AXIS1X, sy-vline,
  WA_EDESK_INST_DIR-AXIS1Y, sy-vline,
  WA_EDESK_INST_DIR-AXIS1Z, sy-vline,
  WA_EDESK_INST_DIR-AXIS2X, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EDESK_INST_DIR 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_EDESK_INST_DIR 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_EDESK_INST_DIR INTO WA_EDESK_INST_DIR.


*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 DOCNUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EDESK_INST_DIR-DOCNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EDESK_INST_DIR-DOCNUMBER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CHANGE_NO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EDESK_INST_DIR-CHANGE_NO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EDESK_INST_DIR-CHANGE_NO.
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_EDESK_INST_DIR_STR, 
MANDT TYPE STRING,
GUIDX TYPE STRING,
CNT TYPE STRING,
INSTGUID_BOM TYPE STRING,
LOCOX TYPE STRING,
LOCOY TYPE STRING,
LOCOZ TYPE STRING,
AXIS1X TYPE STRING,
AXIS1Y TYPE STRING,
AXIS1Z TYPE STRING,
AXIS2X TYPE STRING,
AXIS2Y TYPE STRING,
AXIS2Z TYPE STRING,
AXIS3X TYPE STRING,
AXIS3Y TYPE STRING,
AXIS3Z TYPE STRING,
SCALE TYPE STRING,
XMIN TYPE STRING,
YMIN TYPE STRING,
ZMIN TYPE STRING,
XMAX TYPE STRING,
YMAX TYPE STRING,
ZMAX TYPE STRING,
DOCTYPE TYPE STRING,
DOCNUMBER TYPE STRING,
DOCPART TYPE STRING,
DOCVERSION TYPE STRING,
GUID_IDENT TYPE STRING,
GUID_PARENT TYPE STRING,
BOM_GUID TYPE STRING,
CREATED_FLG TYPE STRING,
DELETED_FLG TYPE STRING,
CHANGE_NO TYPE STRING,
DESCRIPTION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EDESK_INST_DIR_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_EDESK_INST_DIR_STR-MANDT sy-vline 
WA_EDESK_INST_DIR_STR-GUIDX sy-vline 
WA_EDESK_INST_DIR_STR-CNT sy-vline 
WA_EDESK_INST_DIR_STR-INSTGUID_BOM sy-vline 
WA_EDESK_INST_DIR_STR-LOCOX sy-vline 
WA_EDESK_INST_DIR_STR-LOCOY sy-vline 
WA_EDESK_INST_DIR_STR-LOCOZ sy-vline 
WA_EDESK_INST_DIR_STR-AXIS1X sy-vline 
WA_EDESK_INST_DIR_STR-AXIS1Y sy-vline 
WA_EDESK_INST_DIR_STR-AXIS1Z sy-vline 
WA_EDESK_INST_DIR_STR-AXIS2X sy-vline 
WA_EDESK_INST_DIR_STR-AXIS2Y sy-vline 
WA_EDESK_INST_DIR_STR-AXIS2Z sy-vline 
WA_EDESK_INST_DIR_STR-AXIS3X sy-vline 
WA_EDESK_INST_DIR_STR-AXIS3Y sy-vline 
WA_EDESK_INST_DIR_STR-AXIS3Z sy-vline 
WA_EDESK_INST_DIR_STR-SCALE sy-vline 
WA_EDESK_INST_DIR_STR-XMIN sy-vline 
WA_EDESK_INST_DIR_STR-YMIN sy-vline 
WA_EDESK_INST_DIR_STR-ZMIN sy-vline 
WA_EDESK_INST_DIR_STR-XMAX sy-vline 
WA_EDESK_INST_DIR_STR-YMAX sy-vline 
WA_EDESK_INST_DIR_STR-ZMAX sy-vline 
WA_EDESK_INST_DIR_STR-DOCTYPE sy-vline 
WA_EDESK_INST_DIR_STR-DOCNUMBER sy-vline 
WA_EDESK_INST_DIR_STR-DOCPART sy-vline 
WA_EDESK_INST_DIR_STR-DOCVERSION sy-vline 
WA_EDESK_INST_DIR_STR-GUID_IDENT sy-vline 
WA_EDESK_INST_DIR_STR-GUID_PARENT sy-vline 
WA_EDESK_INST_DIR_STR-BOM_GUID sy-vline 
WA_EDESK_INST_DIR_STR-CREATED_FLG sy-vline 
WA_EDESK_INST_DIR_STR-DELETED_FLG sy-vline 
WA_EDESK_INST_DIR_STR-CHANGE_NO sy-vline 
WA_EDESK_INST_DIR_STR-DESCRIPTION sy-vline      INTO ld_text SEPARATED BY SPACE.

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