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Table 1:
orders
** ********* *******'* ****** ***** *****.
***_**** | ***_****
--------------+-------------------
*****_** | ******
*******_** | ******
********_** | ******
*****_** | ****
*** | *******
****_*****_***| *****
******* | *******(20) -- ******, *******
Table 2:
product_category
*** ******* *** **** ****** ** *** ********
***_**** | ***_****
----------------------+-------------------
*******_** | ******
*******_********_** | ********