Why doesn't tsrange('2018-01-01', NULL) @> transactions.transacted_at use the b-tree index?
Given
CREATE TABLE transactions
(
transacted_at TIMESTAMP
);
CREATE INDEX IF NOT EXISTS index_transactions_on_transacted_at
ON transactions (transacted_at);
Then this doesn't use the index:
SELECT * FROM transactions
WHERE tsrange('2018-01-01', NULL) @> transacted_at;
But this does:
SELECT * FROM transactions
WHERE transacted_at > '2018-02-01'
I realize that I can simply deconstruct the range and do the comparison that works, but I'd like to know how I can use ranges natively with an index on the transactions table.
What am I missing?
postgresql-9.6
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Given
CREATE TABLE transactions
(
transacted_at TIMESTAMP
);
CREATE INDEX IF NOT EXISTS index_transactions_on_transacted_at
ON transactions (transacted_at);
Then this doesn't use the index:
SELECT * FROM transactions
WHERE tsrange('2018-01-01', NULL) @> transacted_at;
But this does:
SELECT * FROM transactions
WHERE transacted_at > '2018-02-01'
I realize that I can simply deconstruct the range and do the comparison that works, but I'd like to know how I can use ranges natively with an index on the transactions table.
What am I missing?
postgresql-9.6
add a comment |
Given
CREATE TABLE transactions
(
transacted_at TIMESTAMP
);
CREATE INDEX IF NOT EXISTS index_transactions_on_transacted_at
ON transactions (transacted_at);
Then this doesn't use the index:
SELECT * FROM transactions
WHERE tsrange('2018-01-01', NULL) @> transacted_at;
But this does:
SELECT * FROM transactions
WHERE transacted_at > '2018-02-01'
I realize that I can simply deconstruct the range and do the comparison that works, but I'd like to know how I can use ranges natively with an index on the transactions table.
What am I missing?
postgresql-9.6
Given
CREATE TABLE transactions
(
transacted_at TIMESTAMP
);
CREATE INDEX IF NOT EXISTS index_transactions_on_transacted_at
ON transactions (transacted_at);
Then this doesn't use the index:
SELECT * FROM transactions
WHERE tsrange('2018-01-01', NULL) @> transacted_at;
But this does:
SELECT * FROM transactions
WHERE transacted_at > '2018-02-01'
I realize that I can simply deconstruct the range and do the comparison that works, but I'd like to know how I can use ranges natively with an index on the transactions table.
What am I missing?
postgresql-9.6
postgresql-9.6
asked 2 mins ago
Kit SundeKit Sunde
139110
139110
add a comment |
add a comment |
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