mirror of
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45 lines
773 B
Plaintext
45 lines
773 B
Plaintext
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CREATE TABLE p (
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id INTEGER PRIMARY KEY,
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uid VARCHAR(36),
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t INTEGER
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);
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CREATE TABLE pa (
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id INTEGER PRIMARY KEY,
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a_uid VARCHAR(36)
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);
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CREATE TABLE a (
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id INTEGER PRIMARY KEY,
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uid VARCHAR(36),
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t INTEGER
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);
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INSERT INTO pa VALUES(1,'1234');
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INSERT INTO pa VALUES(2,'2345');
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INSERT INTO p VALUES(3,'1234',97);
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INSERT INTO p VALUES(4,'1234',98);
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INSERT INTO a VALUES(5,'1234',98);
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INSERT INTO a VALUES(6,'1234',99);
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SELECT DISTINCT pa.id, p.id, a.id
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FROM
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pa
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LEFT JOIN p ON p.uid='1234'
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LEFT JOIN a ON a.uid=pa.a_uid
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WHERE
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a.t=p.t
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;
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SELECT DISTINCT pa.id, p.id, a.id
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FROM
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pa
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LEFT JOIN p ON p.uid='1234'
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LEFT JOIN a ON a.uid=pa.a_uid AND a.t=p.t
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ORDER BY 1, 2, 3
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;
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