27 lines
912 B
SQL
27 lines
912 B
SQL
CREATE TABLE IF NOT EXISTS `channel` (
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`id` INTEGER PRIMARY KEY AUTOINCREMENT,
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`name` VARCHAR,
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`last_message_id` INTEGER,
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`created_at` DATETIME DEFAULT CURRENT_TIMESTAMP
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);
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CREATE TABLE IF NOT EXISTS `channel_user` (
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`id` INTEGER PRIMARY KEY AUTOINCREMENT,
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`channel_id` INTEGER NOT NULL,
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`user_id` INTEGER NOT NULL,
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`admin` BOOLEAN NOT NULL DEFAULT 0,
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FOREIGN KEY(`channel_id`) REFERENCES `channel`(`id`) ON DELETE CASCADE,
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FOREIGN KEY(`user_id`) REFERENCES `user`(`id`) ON DELETE CASCADE
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);
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CREATE TABLE IF NOT EXISTS `message` (
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`id` INTEGER PRIMARY KEY AUTOINCREMENT,
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`channel_id` INTEGER NOT NULL,
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`author_id` INTEGER,
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`content` TEXT,
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`created_at` DATETIME DEFAULT CURRENT_TIMESTAMP,
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FOREIGN KEY(`channel_id`) REFERENCES `channel`(`id`) ON DELETE CASCADE,
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FOREIGN KEY(`author_id`) REFERENCES `user`(`id`) ON DELETE
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SET
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NULL
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); |