ABAP Select data from SAP table ICOELTP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICOELTP
*  INTO TABLE @DATA(IT_ICOELTP2).
*--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_ICOELTP INDEX 1 INTO DATA(WA_ICOELTP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICOELTP>-MANDT = 1.
<ICOELTP>-CHARTOFACCOUNTS = 1.
<ICOELTP>-GLACCOUNT = 1.
<ICOELTP>-CONTROLLINGAREA = 1.
<ICOELTP>-CONTROLLINGAREAFOREDIT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICOELTP-CHARTOFACCOUNTSFOREDIT, sy-vline,
  WA_ICOELTP-GLACCOUNTFOREDIT, sy-vline,
  WA_ICOELTP-VALIDITYSTARTDATE, sy-vline,
  WA_ICOELTP-VALIDITYENDDATE, sy-vline,
  WA_ICOELTP-COSTELEMENTCATEGORY, sy-vline,
  WA_ICOELTP-CONSUMPTIONQTYISRECORDED, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICOELTP 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_ICOELTP 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_ICOELTP INTO WA_ICOELTP.


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

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

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

*Conversion exit CUNIT, internal->external for field UNITOFMEASURE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ICOELTP-UNITOFMEASURE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICOELTP-UNITOFMEASURE.
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_ICOELTP_STR, 
MANDT TYPE STRING,
CHARTOFACCOUNTS TYPE STRING,
GLACCOUNT TYPE STRING,
CONTROLLINGAREA TYPE STRING,
CONTROLLINGAREAFOREDIT TYPE STRING,
CHARTOFACCOUNTSFOREDIT TYPE STRING,
GLACCOUNTFOREDIT TYPE STRING,
VALIDITYSTARTDATE TYPE STRING,
VALIDITYENDDATE TYPE STRING,
COSTELEMENTCATEGORY TYPE STRING,
CONSUMPTIONQTYISRECORDED TYPE STRING,
UNITOFMEASURE TYPE STRING,
CREATIONDATE TYPE STRING,
CREATEDBYUSER TYPE STRING,
FUNCTIONALAREA TYPE STRING,
ACCTASSIGNMENTISSTATISTICAL TYPE STRING,
ACCOUNTISMARKEDFORDELETION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICOELTP_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_ICOELTP_STR-MANDT sy-vline 
WA_ICOELTP_STR-CHARTOFACCOUNTS sy-vline 
WA_ICOELTP_STR-GLACCOUNT sy-vline 
WA_ICOELTP_STR-CONTROLLINGAREA sy-vline 
WA_ICOELTP_STR-CONTROLLINGAREAFOREDIT sy-vline 
WA_ICOELTP_STR-CHARTOFACCOUNTSFOREDIT sy-vline 
WA_ICOELTP_STR-GLACCOUNTFOREDIT sy-vline 
WA_ICOELTP_STR-VALIDITYSTARTDATE sy-vline 
WA_ICOELTP_STR-VALIDITYENDDATE sy-vline 
WA_ICOELTP_STR-COSTELEMENTCATEGORY sy-vline 
WA_ICOELTP_STR-CONSUMPTIONQTYISRECORDED sy-vline 
WA_ICOELTP_STR-UNITOFMEASURE sy-vline 
WA_ICOELTP_STR-CREATIONDATE sy-vline 
WA_ICOELTP_STR-CREATEDBYUSER sy-vline 
WA_ICOELTP_STR-FUNCTIONALAREA sy-vline 
WA_ICOELTP_STR-ACCTASSIGNMENTISSTATISTICAL sy-vline 
WA_ICOELTP_STR-ACCOUNTISMARKEDFORDELETION sy-vline      INTO ld_text SEPARATED BY SPACE.

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