oracle - Obtaining the desired result to retrieve non-existent data with a sql query -


i need know if possible retrieve non-existent data sql query. production table have 3 colums 4 records product2 have no media2 record , product3 have no media1 record , show these non-existent record 0 value:

products       media      cnt   ------------------------------------------------------------------------   product1     media1        5   product1     media2        7   product2     media1       30   product3     media2       12

and desired result ( if possible) be:

products       media      cnt   ------------------------------------------------------------------------   product1     media1        5   product1     media2        7   product2     media1       30   product2     media2        0   product3     media1       0   product3     media2       12

as mentiond in comments - have normalize model. technically need cartesian join of unique products , media values, large table unacceptable approach due performance issue:

sql> t    2  (   3  select 'product1' products,'media1' media, 5 cnt  dual union   4  select 'product1','media2', 7  dual union   5  select 'product2','media1', 30  dual union   6  select 'product3','media2', 12  dual   7  )   8  ,   9  cart_t (select p.products, g.media  10  (select unique products t) p, (select unique media t) g)  11  select cart_t.products, cart_t.media, nvl(cnt,0) cnt t ,  cart_t  12  cart_t.products = t.products(+)  13  , cart_t.media = t.media(+)  14  order 1,2  15  /  products media         cnt                                                       -------- ------ ----------                                                       product1 media1          5                                                       product1 media2          7                                                       product2 media1         30                                                       product2 media2          0                                                       product3 media1          0                                                       product3 media2         12

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