ABAP Select data from SAP table ESH_U_CLFNCHARC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ESH_U_CLFNCHARC
*  INTO TABLE @DATA(IT_ESH_U_CLFNCHARC2).
*--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_ESH_U_CLFNCHARC INDEX 1 INTO DATA(WA_ESH_U_CLFNCHARC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ESH_U_CLFNCHARC>-MANDT = 1.
<ESH_U_CLFNCHARC>-CHARACTERISTIC = 1.
<ESH_U_CLFNCHARC>-CHARCDATATYPE = 1.
<ESH_U_CLFNCHARC>-CHARCDECIMALS = 1.
<ESH_U_CLFNCHARC>-CHARCDESCRIPTION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ESH_U_CLFNCHARC-CHARCFROMAMOUNT, sy-vline,
  WA_ESH_U_CLFNCHARC-CHARCFROMDATE, sy-vline,
  WA_ESH_U_CLFNCHARC-CHARCFROMDECIMALVALUE, sy-vline,
  WA_ESH_U_CLFNCHARC-CHARCFROMNUMERICVALUE, sy-vline,
  WA_ESH_U_CLFNCHARC-CHARCFROMTIME, sy-vline,
  WA_ESH_U_CLFNCHARC-CHARCGROUP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ESH_U_CLFNCHARC 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_ESH_U_CLFNCHARC 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_ESH_U_CLFNCHARC INTO WA_ESH_U_CLFNCHARC.


*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_ESH_U_CLFNCHARC_STR, 
MANDT TYPE STRING,
CHARACTERISTIC TYPE STRING,
CHARCDATATYPE TYPE STRING,
CHARCDECIMALS TYPE STRING,
CHARCDESCRIPTION TYPE STRING,
CHARCFROMAMOUNT TYPE STRING,
CHARCFROMDATE TYPE STRING,
CHARCFROMDECIMALVALUE TYPE STRING,
CHARCFROMNUMERICVALUE TYPE STRING,
CHARCFROMTIME TYPE STRING,
CHARCGROUP TYPE STRING,
CHARCGROUPNAME TYPE STRING,
CHARCINTERNALID TYPE STRING,
CHARCLENGTH TYPE STRING,
CHARCMAINTAUTHGRP TYPE STRING,
CHARCREFERENCETABLE TYPE STRING,
CHARCREFERENCETABLEFIELD TYPE STRING,
CHARCSTATUS TYPE STRING,
CHARCSTATUSNAME TYPE STRING,
CHARCTOAMOUNT TYPE STRING,
CHARCTODATE TYPE STRING,
CHARCTODECIMALVALUE TYPE STRING,
CHARCTONUMERICVALUE TYPE STRING,
CHARCTOTIME TYPE STRING,
CHARCVALUE TYPE STRING,
CHARCVALUEDESCRIPTION TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATE TYPE STRING,
CURRENCY TYPE STRING,
ENTRYISREQUIRED TYPE STRING,
LASTCHANGEDATE TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
UNITOFMEASURETECHNICALNAME TYPE STRING,
CREATEDBYUSERDESCRIPTION TYPE STRING,
LASTCHANGEDBYUSERDESCRIPTION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ESH_U_CLFNCHARC_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_ESH_U_CLFNCHARC_STR-MANDT sy-vline 
WA_ESH_U_CLFNCHARC_STR-CHARACTERISTIC sy-vline 
WA_ESH_U_CLFNCHARC_STR-CHARCDATATYPE sy-vline 
WA_ESH_U_CLFNCHARC_STR-CHARCDECIMALS sy-vline 
WA_ESH_U_CLFNCHARC_STR-CHARCDESCRIPTION sy-vline 
WA_ESH_U_CLFNCHARC_STR-CHARCFROMAMOUNT sy-vline 
WA_ESH_U_CLFNCHARC_STR-CHARCFROMDATE sy-vline 
WA_ESH_U_CLFNCHARC_STR-CHARCFROMDECIMALVALUE sy-vline 
WA_ESH_U_CLFNCHARC_STR-CHARCFROMNUMERICVALUE sy-vline 
WA_ESH_U_CLFNCHARC_STR-CHARCFROMTIME sy-vline 
WA_ESH_U_CLFNCHARC_STR-CHARCGROUP sy-vline 
WA_ESH_U_CLFNCHARC_STR-CHARCGROUPNAME sy-vline 
WA_ESH_U_CLFNCHARC_STR-CHARCINTERNALID sy-vline 
WA_ESH_U_CLFNCHARC_STR-CHARCLENGTH sy-vline 
WA_ESH_U_CLFNCHARC_STR-CHARCMAINTAUTHGRP sy-vline 
WA_ESH_U_CLFNCHARC_STR-CHARCREFERENCETABLE sy-vline 
WA_ESH_U_CLFNCHARC_STR-CHARCREFERENCETABLEFIELD sy-vline 
WA_ESH_U_CLFNCHARC_STR-CHARCSTATUS sy-vline 
WA_ESH_U_CLFNCHARC_STR-CHARCSTATUSNAME sy-vline 
WA_ESH_U_CLFNCHARC_STR-CHARCTOAMOUNT sy-vline 
WA_ESH_U_CLFNCHARC_STR-CHARCTODATE sy-vline 
WA_ESH_U_CLFNCHARC_STR-CHARCTODECIMALVALUE sy-vline 
WA_ESH_U_CLFNCHARC_STR-CHARCTONUMERICVALUE sy-vline 
WA_ESH_U_CLFNCHARC_STR-CHARCTOTIME sy-vline 
WA_ESH_U_CLFNCHARC_STR-CHARCVALUE sy-vline 
WA_ESH_U_CLFNCHARC_STR-CHARCVALUEDESCRIPTION sy-vline 
WA_ESH_U_CLFNCHARC_STR-CREATEDBYUSER sy-vline 
WA_ESH_U_CLFNCHARC_STR-CREATIONDATE sy-vline 
WA_ESH_U_CLFNCHARC_STR-CURRENCY sy-vline 
WA_ESH_U_CLFNCHARC_STR-ENTRYISREQUIRED sy-vline 
WA_ESH_U_CLFNCHARC_STR-LASTCHANGEDATE sy-vline 
WA_ESH_U_CLFNCHARC_STR-LASTCHANGEDBYUSER sy-vline 
WA_ESH_U_CLFNCHARC_STR-UNITOFMEASURETECHNICALNAME sy-vline 
WA_ESH_U_CLFNCHARC_STR-CREATEDBYUSERDESCRIPTION sy-vline 
WA_ESH_U_CLFNCHARC_STR-LASTCHANGEDBYUSERDESCRIPTION sy-vline      INTO ld_text SEPARATED BY SPACE.

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