August 27, 2014 at 11:11 am
I have two tables
CustomerOrders
Country
I would like to write a Update statement on customer order table with validation from country table.
Update CustomerOrders
set CustomerOrders.Country = 'DDDDD'
validation country from country table.
The above statement will throw error as there is no country 'DDDDD'
September 2, 2014 at 11:49 pm
Sounds like you want to add a foreign key relationship between the Country column in your CustomerOrders table to the country code in your Countries table.
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INDEXing a poor-performing query is like putting sugar on cat food. Yeah, it probably tastes better but are you sure you want to eat it?
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September 4, 2014 at 12:10 am
seems like you want inner join on table to be updated and country table on country='DDDDD'
check attachment
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