23 lines
1.1 KiB
MySQL
23 lines
1.1 KiB
MySQL
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-- 创建触发器与变量关联表
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CREATE TABLE TriggerVariables (
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Id INTEGER PRIMARY KEY AUTOINCREMENT,
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TriggerDefinitionId INTEGER NOT NULL,
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VariableId INTEGER NOT NULL,
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FOREIGN KEY (TriggerDefinitionId) REFERENCES TriggerDefinitions(Id) ON DELETE CASCADE,
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FOREIGN KEY (VariableId) REFERENCES Variables(Id) ON DELETE CASCADE
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);
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-- 创建索引以提高查询性能
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CREATE INDEX IX_TriggerVariables_TriggerDefinitionId ON TriggerVariables (TriggerDefinitionId);
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CREATE INDEX IX_TriggerVariables_VariableId ON TriggerVariables (VariableId);
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-- 迁移现有数据：将TriggerDefinitions表中的VariableId迁移到新的关联表中
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INSERT INTO TriggerVariables (TriggerDefinitionId, VariableId)
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SELECT Id, VariableId
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FROM TriggerDefinitions
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WHERE VariableId IS NOT NULL AND VariableId > 0;
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-- 删除TriggerDefinitions表中的VariableId列（如果数据库支持）
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-- 注意：SQLite不支持直接删除列，所以这里只是注释说明
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-- 在支持的数据库中，可以使用以下语句：
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-- ALTER TABLE TriggerDefinitions DROP COLUMN VariableId;
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