ABAP Select data from SAP table IEDEVINFORECH into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IEDEVINFORECH
*  INTO TABLE @DATA(IT_IEDEVINFORECH2).
*--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_IEDEVINFORECH INDEX 1 INTO DATA(WA_IEDEVINFORECH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IEDEVINFORECH>-MANDT = 1.
<IEDEVINFORECH>-UTILITIESDEVICEINFORECORD = 1.
<IEDEVINFORECH>-UTILSDEVICEVALIDITYENDDATE = 1.
<IEDEVINFORECH>-UTILSDEVICEVALIDITYSTARTDATE = 1.
<IEDEVINFORECH>-UTILITIESLOGICALDEVICENUMBER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IEDEVINFORECH-UTILITIESREGISTERGROUP, sy-vline,
  WA_IEDEVINFORECH-UTILITIESDEVICECATEGORY, sy-vline,
  WA_IEDEVINFORECH-UTILSDEVICEBSCCATCOMBINATION, sy-vline,
  WA_IEDEVINFORECH-UTILSDEVICEINSTALLATIONDATE, sy-vline,
  WA_IEDEVINFORECH-UTILSDEVICEREMOVALDATE, sy-vline,
  WA_IEDEVINFORECH-UTILSDEVICEGROUP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IEDEVINFORECH 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_IEDEVINFORECH 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_IEDEVINFORECH INTO WA_IEDEVINFORECH.


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

*Conversion exit ALPHA, internal->external for field UTILITIESREGISTERGROUP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IEDEVINFORECH-UTILITIESREGISTERGROUP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IEDEVINFORECH-UTILITIESREGISTERGROUP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field UTILITIESDEVICECATEGORY
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_IEDEVINFORECH-UTILITIESDEVICECATEGORY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IEDEVINFORECH-UTILITIESDEVICECATEGORY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field UTILSDEVICEGROUP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IEDEVINFORECH-UTILSDEVICEGROUP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IEDEVINFORECH-UTILSDEVICEGROUP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field UTILSDEVICEWINDINGGROUP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IEDEVINFORECH-UTILSDEVICEWINDINGGROUP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IEDEVINFORECH-UTILSDEVICEWINDINGGROUP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GERNR, internal->external for field SERIALNUMBER
CALL FUNCTION 'CONVERSION_EXIT_GERNR_OUTPUT'
  EXPORTING
    input =                      WA_IEDEVINFORECH-SERIALNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IEDEVINFORECH-SERIALNUMBER.
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_IEDEVINFORECH_STR, 
MANDT TYPE STRING,
UTILITIESDEVICEINFORECORD TYPE STRING,
UTILSDEVICEVALIDITYENDDATE TYPE STRING,
UTILSDEVICEVALIDITYSTARTDATE TYPE STRING,
UTILITIESLOGICALDEVICENUMBER TYPE STRING,
UTILITIESREGISTERGROUP TYPE STRING,
UTILITIESDEVICECATEGORY TYPE STRING,
UTILSDEVICEBSCCATCOMBINATION TYPE STRING,
UTILSDEVICEINSTALLATIONDATE TYPE STRING,
UTILSDEVICEREMOVALDATE TYPE STRING,
UTILSDEVICEGROUP TYPE STRING,
UTILITIESPREPAYMENTMETERTYPE TYPE STRING,
UTILSDEVICELOSSDETNGROUP TYPE STRING,
DVCEPWRTRNSFRMTRPRIMVOLTVAL TYPE STRING,
DVCEPWRTRNSFRMTRSECDRYVOLTVAL TYPE STRING,
DVCEPWRTRNSFRMTRTRNSFRATINGVAL TYPE STRING,
ADVANCEDMETERINGSYSTEM TYPE STRING,
ADVANCEDMETERCAPABILITYGROUP TYPE STRING,
UNIQUEITEMIDENTIFIER TYPE STRING,
UTILSDEVICEWINDINGGROUP TYPE STRING,
UTILSDEVICEINFORECDSRVCPRVD TYPE STRING,
SERIALNUMBER TYPE STRING,
DIVISION TYPE STRING,
UTILSINFORECDAUTHORIZATIONGRP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IEDEVINFORECH_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_IEDEVINFORECH_STR-MANDT sy-vline 
WA_IEDEVINFORECH_STR-UTILITIESDEVICEINFORECORD sy-vline 
WA_IEDEVINFORECH_STR-UTILSDEVICEVALIDITYENDDATE sy-vline 
WA_IEDEVINFORECH_STR-UTILSDEVICEVALIDITYSTARTDATE sy-vline 
WA_IEDEVINFORECH_STR-UTILITIESLOGICALDEVICENUMBER sy-vline 
WA_IEDEVINFORECH_STR-UTILITIESREGISTERGROUP sy-vline 
WA_IEDEVINFORECH_STR-UTILITIESDEVICECATEGORY sy-vline 
WA_IEDEVINFORECH_STR-UTILSDEVICEBSCCATCOMBINATION sy-vline 
WA_IEDEVINFORECH_STR-UTILSDEVICEINSTALLATIONDATE sy-vline 
WA_IEDEVINFORECH_STR-UTILSDEVICEREMOVALDATE sy-vline 
WA_IEDEVINFORECH_STR-UTILSDEVICEGROUP sy-vline 
WA_IEDEVINFORECH_STR-UTILITIESPREPAYMENTMETERTYPE sy-vline 
WA_IEDEVINFORECH_STR-UTILSDEVICELOSSDETNGROUP sy-vline 
WA_IEDEVINFORECH_STR-DVCEPWRTRNSFRMTRPRIMVOLTVAL sy-vline 
WA_IEDEVINFORECH_STR-DVCEPWRTRNSFRMTRSECDRYVOLTVAL sy-vline 
WA_IEDEVINFORECH_STR-DVCEPWRTRNSFRMTRTRNSFRATINGVAL sy-vline 
WA_IEDEVINFORECH_STR-ADVANCEDMETERINGSYSTEM sy-vline 
WA_IEDEVINFORECH_STR-ADVANCEDMETERCAPABILITYGROUP sy-vline 
WA_IEDEVINFORECH_STR-UNIQUEITEMIDENTIFIER sy-vline 
WA_IEDEVINFORECH_STR-UTILSDEVICEWINDINGGROUP sy-vline 
WA_IEDEVINFORECH_STR-UTILSDEVICEINFORECDSRVCPRVD sy-vline 
WA_IEDEVINFORECH_STR-SERIALNUMBER sy-vline 
WA_IEDEVINFORECH_STR-DIVISION sy-vline 
WA_IEDEVINFORECH_STR-UTILSINFORECDAUTHORIZATIONGRP sy-vline      INTO ld_text SEPARATED BY SPACE.

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