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trigger new row join other table
Posted by: Jingtan Li
Date: January 08, 2014 03:30AM

table_a
country_id
country_GDP

table_b
province_id
province_GDP


table_c
country_id
province_id

I want make a trigger in table_b,if province_GDP changed, country_GDP in table_a will change.

the problem is :

I don't know how to join the table_c to the new row.

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trigger new row join other table
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