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並前往https://www.cockroachlabs.com/docs/stable/null-handling.html

NULL Handling | CockroachDB Docs - Cockroach Labs

INSERT INTO customers (customer_id, cust_name, cust_email) VALUES (1, 'Smith', NULL);. CREATE TABLE t1( a INT, b INT, c INT );. INSERT INTO t1 VALUES(1, 0, ...

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