trying to update records in one table, with values from another because I have added a new column.
I need to take the two char country code from one table and put it into another with an update statement. The rows in which I input this new value, must contain the corresponding three char country code.
the three char country code is in both tables so shouldn't I be joining them, to ensure the two char code goes into the correct rows?
this query below fails because the sub query brings in more than one row.
set two_char_country_code = (
from ip_to_country AS ip
where country_codes.three_char_country_code = ip.three_char_country_code
sorry for being so quick to have gone rusty.
is this what you wanted?
ON ip_to_country.three_char_country_code = country_codes.three_char_country_code
SET country_codes.two_char_country_code = ip_to_country.two_char_country_code
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