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46 lines
1.6 KiB
Text
46 lines
1.6 KiB
Text
DROP TABLE IF EXISTS graph_base;
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DROP TABLE IF EXISTS graph;
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CREATE TABLE graph_base (
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from_id INT UNSIGNED NOT NULL,
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to_id INT UNSIGNED NOT NULL,
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another_id INT UNSIGNED NOT NULL DEFAULT 1,
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w DOUBLE NOT NULL DEFAULT 1,
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PRIMARY KEY (from_id,to_id),
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INDEX (to_id)
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) ENGINE=MyISAM;
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CREATE TABLE graph (
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latch VARCHAR(32) NULL,
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origid BIGINT UNSIGNED NULL,
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destid BIGINT UNSIGNED NULL,
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weight DOUBLE NULL,
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seq BIGINT UNSIGNED NULL,
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linkid BIGINT UNSIGNED NULL,
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KEY (latch, origid, destid) USING HASH,
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KEY (latch, destid, origid) USING HASH
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) ENGINE=OQGRAPH DATA_TABLE='graph_base' ORIGID='from_id', DESTID='to_id', WEIGHT='w';
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INSERT INTO graph_base(from_id, to_id) VALUES (1,2), (2,1);
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INSERT INTO graph_base(from_id, to_id) VALUES (1,3), (3,1);
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INSERT INTO graph_base(from_id, to_id) VALUES (1,4), (4,1);
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INSERT INTO graph_base(from_id, to_id) VALUES (3,4), (4,3);
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SELECT * from graph;
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latch origid destid weight seq linkid
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NULL 1 2 1 NULL NULL
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NULL 2 1 1 NULL NULL
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NULL 1 3 1 NULL NULL
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NULL 3 1 1 NULL NULL
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NULL 1 4 1 NULL NULL
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NULL 4 1 1 NULL NULL
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NULL 3 4 1 NULL NULL
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NULL 4 3 1 NULL NULL
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SELECT * FROM graph WHERE destid=2 and origid=1;
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latch origid destid weight seq linkid
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NULL 1 2 1 NULL NULL
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alter table graph ORIGID = 'another_id';
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ERROR HY000: Storage engine OQGRAPH of the table `test`.`graph` doesn't have this option
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alter table graph ORIGID = 'something_else';
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ERROR HY000: Storage engine OQGRAPH of the table `test`.`graph` doesn't have this option
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DELETE FROM graph_base;
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FLUSH TABLES;
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TRUNCATE TABLE graph_base;
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DROP TABLE graph_base;
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DROP TABLE graph;
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