ABAP Select data from SAP table ITCCLG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ITCCLG
*  INTO TABLE @DATA(IT_ITCCLG2).
*--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_ITCCLG INDEX 1 INTO DATA(WA_ITCCLG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ITCCLG>-MANDT = 1.
<ITCCLG>-PAYMENTCARDPAYMENTSETTLEMENT = 1.
<ITCCLG>-COMPANYCODE = 1.
<ITCCLG>-GLACCOUNT = 1.
<ITCCLG>-PAYMENTDOCUMENT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ITCCLG-FISCALYEAR, sy-vline,
  WA_ITCCLG-CURRENCY, sy-vline,
  WA_ITCCLG-PAYMENTCARDAMOUNTTOBESETTLED, sy-vline,
  WA_ITCCLG-PAYTCARDSETTLEMENTDOCISPOSTED, sy-vline,
  WA_ITCCLG-PAYTCARDSETTLEMENTISSUCCESSFUL, sy-vline,
  WA_ITCCLG-PAYTCARDSETTLMTISUNSUCCESSFUL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ITCCLG 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_ITCCLG 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_ITCCLG INTO WA_ITCCLG.


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

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

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

*Conversion exit GJAHR, internal->external for field FISCALYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_ITCCLG-FISCALYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ITCCLG-FISCALYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field PAYMENTCARDAMOUNTTOBESETTLED
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_ITCCLG-PAYMENTCARDAMOUNTTOBESETTLED
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ITCCLG-PAYMENTCARDAMOUNTTOBESETTLED.
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_ITCCLG_STR, 
MANDT TYPE STRING,
PAYMENTCARDPAYMENTSETTLEMENT TYPE STRING,
COMPANYCODE TYPE STRING,
GLACCOUNT TYPE STRING,
PAYMENTDOCUMENT TYPE STRING,
FISCALYEAR TYPE STRING,
CURRENCY TYPE STRING,
PAYMENTCARDAMOUNTTOBESETTLED TYPE STRING,
PAYTCARDSETTLEMENTDOCISPOSTED TYPE STRING,
PAYTCARDSETTLEMENTISSUCCESSFUL TYPE STRING,
PAYTCARDSETTLMTISUNSUCCESSFUL TYPE STRING,
PAYTCARDNUMBEROFSETTLMTATTEMPT TYPE STRING,
PAYTCARDFIRSTSETTLEMENTUSER TYPE STRING,
PAYTCARDFIRSTSETTLEMENTDATE TYPE STRING,
PAYTCARDFIRSTSETTLEMENTTIME TYPE STRING,
PAYTCARDLASTSETTLEMENTUSER TYPE STRING,
PAYTCARDLASTSETTLEMENTDATE TYPE STRING,
PAYTCARDLASTSETTLEMENTTIME TYPE STRING,
PAYTCARDNUMBEROFSETTLEDITEMS TYPE STRING,
PAYTCARDSETTLEMENTDATE TYPE STRING,
PAYTCARDSETTLEMENTTIME TYPE STRING,
REFBATCHNUMBERBYCLEARINGHOUSE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ITCCLG_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_ITCCLG_STR-MANDT sy-vline 
WA_ITCCLG_STR-PAYMENTCARDPAYMENTSETTLEMENT sy-vline 
WA_ITCCLG_STR-COMPANYCODE sy-vline 
WA_ITCCLG_STR-GLACCOUNT sy-vline 
WA_ITCCLG_STR-PAYMENTDOCUMENT sy-vline 
WA_ITCCLG_STR-FISCALYEAR sy-vline 
WA_ITCCLG_STR-CURRENCY sy-vline 
WA_ITCCLG_STR-PAYMENTCARDAMOUNTTOBESETTLED sy-vline 
WA_ITCCLG_STR-PAYTCARDSETTLEMENTDOCISPOSTED sy-vline 
WA_ITCCLG_STR-PAYTCARDSETTLEMENTISSUCCESSFUL sy-vline 
WA_ITCCLG_STR-PAYTCARDSETTLMTISUNSUCCESSFUL sy-vline 
WA_ITCCLG_STR-PAYTCARDNUMBEROFSETTLMTATTEMPT sy-vline 
WA_ITCCLG_STR-PAYTCARDFIRSTSETTLEMENTUSER sy-vline 
WA_ITCCLG_STR-PAYTCARDFIRSTSETTLEMENTDATE sy-vline 
WA_ITCCLG_STR-PAYTCARDFIRSTSETTLEMENTTIME sy-vline 
WA_ITCCLG_STR-PAYTCARDLASTSETTLEMENTUSER sy-vline 
WA_ITCCLG_STR-PAYTCARDLASTSETTLEMENTDATE sy-vline 
WA_ITCCLG_STR-PAYTCARDLASTSETTLEMENTTIME sy-vline 
WA_ITCCLG_STR-PAYTCARDNUMBEROFSETTLEDITEMS sy-vline 
WA_ITCCLG_STR-PAYTCARDSETTLEMENTDATE sy-vline 
WA_ITCCLG_STR-PAYTCARDSETTLEMENTTIME sy-vline 
WA_ITCCLG_STR-REFBATCHNUMBERBYCLEARINGHOUSE sy-vline      INTO ld_text SEPARATED BY SPACE.

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