I have this SQL query that I have to speed up:
SELECT DISTINCT A.attribute1, A.attribute2 FROM table1 A, table2 B WHERE A.attribute1 = B.attribute3 AND B.attribute4 = 'String';
What I am currently doing is creating a hash index on B.attribute3 to speed up the JOIN and creating another hash index on B.attribute4 to speed up the equality with ‘String’.
CREATE INDEX atr3_idx ON table2 USING HASH (attribute3); CREATE INDEX atr4_idx ON table2 USING HASH (attribute4);
Is there a better way to optimise this query?
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