I have two tables data1 and data2. Data1 contains contains 2 columns, emailaddress and name, but the name column is empty.
emailaddress name
email1
email2
email3
Data2 Contains also contains 2 columns, emailaddress and name, and has more entries than data1
email address name
email1 name1
email1b name1b
email2 name2
email2b name2b
email3 name3
email3b name3b
I'm trying to write an SQL query that compares the email address column from Data1 and Data2, and when it finds a match, the associated name from Data2 is inserted into the corresponding name field for data1.
Data1 would should look like this after the query has been run
emailaddress name
email1 name1
email2 name2
email3 name3
I just can't seem to figure out how to do this. Any help much appreciated.
Give this a try:
UPDATE data1 a, Data2 b
SET a.name= b.name
WHERE a.emailaddress = b.emailaddress
try this
this only Displays the result of the joined table.
SELECT a.emailaddress,
b.name
FROM Data1 a INNER JOIN Data2 b
ON a.EmailAddress = b.emailaddress
UPDATE
this query updates Data1 table.
UPDATE a
SET a.name = b.name
FROM Data1 a INNER JOIN Data2 b
ON a.EmailAddress = b.emailaddress
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