![]() In some cases, such as for InnoDB primary keys, doing so. If you don't expect more than 2 billion rows (> 2147483647) over the lifetime of your table (including waste and deleted rows), consider integer (4 bytes) instead of bigint (8 bytes). Indexes can be created at the same as the table, with the create-tableCREATE TABLE statement. , CONSTRAINT u_constraint UNIQUE (id_a, id_b, id_c) my_table_id bigserial PRIMARY KEY - for pg 9.6 or older FOREIGN KEY directive is used to create the constraint in an inline fashion within the CREATE TABLE definition. at 17:37 Psi You can certainly tell postgresql the order to index the columns, and that can very much make sense in many situations, e.g create index myindex (AccountNumber, ts DESC) is valid in postgresql, but I'm not sure if it can be done on a primary key. My_table_id bigint GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY - for pg 10 CREATE TABLE addresses ( id INTEGER NOT NULL, userid INTEGER, emailaddress VARCHAR NOT NULL, PRIMARY KEY (id), CONSTRAINT useridfk FOREIGN KEY(userid) REFERENCES users (id) ) The CONSTRAINT. You might consider a serial column as primary key or an IDENTITY column in Postgres 10 or later. No use for mixed case identifiers without double quotes in PostgreSQL.
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