Shulou(Shulou.com)06/01 Report--

Select tp.technic_product_code

Tp.technic_product_name

Mp.marketproduct_code

Mp.marketproduct_name

From marketproduct_info mp, technic_product_info tp

Where mp.id_technic_product_info = tp.id_technic_product_info (+)

1) + is written on that table, indicating that the table is allowed to be empty

+ written on the right, indicating the left connection, dominated by the left table

+ written on the left, indicating the right connection, dominated by the right table

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