ABAP Select data from SAP table ICLCUST_T162_CHK into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ICLCUST_T162_CHK 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 ICLCUST_T162_CHK. 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 ICLCUST_T162_CHK 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_ICLCUST_T162_CHK TYPE STANDARD TABLE OF ICLCUST_T162_CHK,
      WA_ICLCUST_T162_CHK TYPE ICLCUST_T162_CHK,
      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: <ICLCUST_T162_CHK> TYPE ICLCUST_T162_CHK.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ICLCUST_T162_CHK.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ICLCUST_T162_CHK
  INTO TABLE IT_ICLCUST_T162_CHK.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICLCUST_T162_CHK
*  INTO TABLE @DATA(IT_ICLCUST_T162_CHK2).
*--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_ICLCUST_T162_CHK INDEX 1 INTO DATA(WA_ICLCUST_T162_CHK2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ICLCUST_T162_CHK ASSIGNING <ICLCUST_T162_CHK>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICLCUST_T162_CHK>-TREE = 1.
<ICLCUST_T162_CHK>-TREELEVEL = 1.
<ICLCUST_T162_CHK>-PXLIMIT = 1.
<ICLCUST_T162_CHK>-XALWAYS = 1.
<ICLCUST_T162_CHK>-LPBLEVEL = 1.

ENDLOOP.

LOOP AT IT_ICLCUST_T162_CHK INTO WA_ICLCUST_T162_CHK.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICLCUST_T162_CHK-LPBENTYPE, sy-vline,
  WA_ICLCUST_T162_CHK-XCOVGLIMDISP4, sy-vline,
  WA_ICLCUST_T162_CHK-POLPROD, sy-vline,
  WA_ICLCUST_T162_CHK-CLTYPE, sy-vline,
  WA_ICLCUST_T162_CHK-GENERAT, sy-vline,
  WA_ICLCUST_T162_CHK-VERSION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICLCUST_T162_CHK 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_ICLCUST_T162_CHK 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_ICLCUST_T162_CHK INTO WA_ICLCUST_T162_CHK.


*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_ICLCUST_T162_CHK_STR, 
TREE TYPE STRING,
TREELEVEL TYPE STRING,
PXLIMIT TYPE STRING,
XALWAYS TYPE STRING,
LPBLEVEL TYPE STRING,
LPBENTYPE TYPE STRING,
XCOVGLIMDISP4 TYPE STRING,
POLPROD TYPE STRING,
CLTYPE TYPE STRING,
GENERAT TYPE STRING,
VERSION TYPE STRING,
PXCROSSSTYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICLCUST_T162_CHK_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_ICLCUST_T162_CHK_STR-TREE sy-vline 
WA_ICLCUST_T162_CHK_STR-TREELEVEL sy-vline 
WA_ICLCUST_T162_CHK_STR-PXLIMIT sy-vline 
WA_ICLCUST_T162_CHK_STR-XALWAYS sy-vline 
WA_ICLCUST_T162_CHK_STR-LPBLEVEL sy-vline 
WA_ICLCUST_T162_CHK_STR-LPBENTYPE sy-vline 
WA_ICLCUST_T162_CHK_STR-XCOVGLIMDISP4 sy-vline 
WA_ICLCUST_T162_CHK_STR-POLPROD sy-vline 
WA_ICLCUST_T162_CHK_STR-CLTYPE sy-vline 
WA_ICLCUST_T162_CHK_STR-GENERAT sy-vline 
WA_ICLCUST_T162_CHK_STR-VERSION sy-vline 
WA_ICLCUST_T162_CHK_STR-PXCROSSSTYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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