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As you probably know, UPDATE INNER JOINS on postgres are not the best. I have gone back to the old way of updating across multiple tables but have come into some performance issues with the following query:
UPDATE table_a a
SET field1 = field4
FROM table_b b , table_c c
WHERE a.field3 = b.field3
AND a.field1 = c.field4
AND ((a.field1 Is Null) Or (a.field1 ='')) AND (a.field2 ='T');
Does anyone have a better/quicker way for running queries like this in postgres?
asked 36 secs ago
Speeding up an update over multiple tables
