ABAP Select data from SAP table ICL_CDCHECK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICL_CDCHECK
*  INTO TABLE @DATA(IT_ICL_CDCHECK2).
*--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_ICL_CDCHECK INDEX 1 INTO DATA(WA_ICL_CDCHECK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICL_CDCHECK>-STATE = 1.
<ICL_CDCHECK>-VALID = 1.
<ICL_CDCHECK>-ERDAT = 1.
<ICL_CDCHECK>-ERTIM = 1.
<ICL_CDCHECK>-ERNAM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICL_CDCHECK-AEDAT, sy-vline,
  WA_ICL_CDCHECK-AETIM, sy-vline,
  WA_ICL_CDCHECK-AENAM, sy-vline,
  WA_ICL_CDCHECK-BNKDT, sy-vline,
  WA_ICL_CDCHECK-DOC2T, sy-vline,
  WA_ICL_CDCHECK-DOC2R, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICL_CDCHECK 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_ICL_CDCHECK 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_ICL_CDCHECK INTO WA_ICL_CDCHECK.


*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_ICL_CDCHECK_STR, 
STATE TYPE STRING,
VALID TYPE STRING,
ERDAT TYPE STRING,
ERTIM TYPE STRING,
ERNAM TYPE STRING,
AEDAT TYPE STRING,
AETIM TYPE STRING,
AENAM TYPE STRING,
BNKDT TYPE STRING,
DOC2T TYPE STRING,
DOC2R TYPE STRING,
CASHR TYPE STRING,
CASHRD TYPE STRING,
CASHRT TYPE STRING,
CRADD TYPE STRING,
BLGRP TYPE STRING,
LINK TYPE STRING,
ESCHDT TYPE STRING,
ESCHRC_ORI TYPE STRING,
ESCHTYPE TYPE STRING,
ESCHSTAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICL_CDCHECK_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_ICL_CDCHECK_STR-STATE sy-vline 
WA_ICL_CDCHECK_STR-VALID sy-vline 
WA_ICL_CDCHECK_STR-ERDAT sy-vline 
WA_ICL_CDCHECK_STR-ERTIM sy-vline 
WA_ICL_CDCHECK_STR-ERNAM sy-vline 
WA_ICL_CDCHECK_STR-AEDAT sy-vline 
WA_ICL_CDCHECK_STR-AETIM sy-vline 
WA_ICL_CDCHECK_STR-AENAM sy-vline 
WA_ICL_CDCHECK_STR-BNKDT sy-vline 
WA_ICL_CDCHECK_STR-DOC2T sy-vline 
WA_ICL_CDCHECK_STR-DOC2R sy-vline 
WA_ICL_CDCHECK_STR-CASHR sy-vline 
WA_ICL_CDCHECK_STR-CASHRD sy-vline 
WA_ICL_CDCHECK_STR-CASHRT sy-vline 
WA_ICL_CDCHECK_STR-CRADD sy-vline 
WA_ICL_CDCHECK_STR-BLGRP sy-vline 
WA_ICL_CDCHECK_STR-LINK sy-vline 
WA_ICL_CDCHECK_STR-ESCHDT sy-vline 
WA_ICL_CDCHECK_STR-ESCHRC_ORI sy-vline 
WA_ICL_CDCHECK_STR-ESCHTYPE sy-vline 
WA_ICL_CDCHECK_STR-ESCHSTAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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