ABAP Select data from SAP table LIKEY_LICENSE into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LIKEY_LICENSE
*  INTO TABLE @DATA(IT_LIKEY_LICENSE2).
*--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_LIKEY_LICENSE INDEX 1 INTO DATA(WA_LIKEY_LICENSE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LIKEY_LICENSE>-SID = 1.
<LIKEY_LICENSE>-HWKEY = 1.
<LIKEY_LICENSE>-SW_PRODUCT = 1.
<LIKEY_LICENSE>-SW_PROD_LIMIT = 1.
<LIKEY_LICENSE>-SW_PROD_TEXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LIKEY_LICENSE-TYPE, sy-vline,
  WA_LIKEY_LICENSE-INSTALL_NO, sy-vline,
  WA_LIKEY_LICENSE-SYSTEM_NO, sy-vline,
  WA_LIKEY_LICENSE-BEGIN_DATE, sy-vline,
  WA_LIKEY_LICENSE-END_DATE, sy-vline,
  WA_LIKEY_LICENSE-LSC_DATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LIKEY_LICENSE 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_LIKEY_LICENSE 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_LIKEY_LICENSE INTO WA_LIKEY_LICENSE.


*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_LIKEY_LICENSE_STR, 
SID TYPE STRING,
HWKEY TYPE STRING,
SW_PRODUCT TYPE STRING,
SW_PROD_LIMIT TYPE STRING,
SW_PROD_TEXT TYPE STRING,
TYPE TYPE STRING,
INSTALL_NO TYPE STRING,
SYSTEM_NO TYPE STRING,
BEGIN_DATE TYPE STRING,
END_DATE TYPE STRING,
LSC_DATE TYPE STRING,
VALIDITY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LIKEY_LICENSE_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_LIKEY_LICENSE_STR-SID sy-vline 
WA_LIKEY_LICENSE_STR-HWKEY sy-vline 
WA_LIKEY_LICENSE_STR-SW_PRODUCT sy-vline 
WA_LIKEY_LICENSE_STR-SW_PROD_LIMIT sy-vline 
WA_LIKEY_LICENSE_STR-SW_PROD_TEXT sy-vline 
WA_LIKEY_LICENSE_STR-TYPE sy-vline 
WA_LIKEY_LICENSE_STR-INSTALL_NO sy-vline 
WA_LIKEY_LICENSE_STR-SYSTEM_NO sy-vline 
WA_LIKEY_LICENSE_STR-BEGIN_DATE sy-vline 
WA_LIKEY_LICENSE_STR-END_DATE sy-vline 
WA_LIKEY_LICENSE_STR-LSC_DATE sy-vline 
WA_LIKEY_LICENSE_STR-VALIDITY sy-vline      INTO ld_text SEPARATED BY SPACE.

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