96 lines
2.0 KiB
MySQL
96 lines
2.0 KiB
MySQL
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-- Remove constraints to table measured_values
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ALTER TABLE humidities
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DROP CONSTRAINT fk_humidites_measured_value_id;
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ALTER TABLE pressures
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DROP CONSTRAINT fk_pressures_measured_value_id;
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ALTER TABLE temperatures
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DROP CONSTRAINT fk_temperatures_measured_value_id;
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-- Rename measured_value_id to sensor_id
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ALTER TABLE humidities
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RENAME COLUMN measured_value_id TO sensor_id;
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ALTER TABLE pressures
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RENAME COLUMN measured_value_id TO sensor_id;
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ALTER TABLE temperatures
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RENAME COLUMN measured_value_id TO sensor_id;
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-- Add new column measures_value_id with data from sensor_id
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ALTER TABLE humidities
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ADD COLUMN measured_value_id CHAR(36);
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UPDATE humidities
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SET measured_value_id=sensor_id;
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ALTER TABLE pressures
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ADD COLUMN measured_value_id CHAR(36);
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UPDATE pressures
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SET measured_value_id=sensor_id;
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ALTER TABLE temperatures
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ADD COLUMN measured_value_id CHAR(36);
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UPDATE temperatures
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SET measured_value_id=sensor_id;
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-- Update sensor_id's
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UPDATE humidities h
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SET sensor_id = (
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SELECT m.sensor_id
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FROM measured_values m
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WHERE m.id = h.measured_value_id
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);
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UPDATE pressures p
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SET sensor_id = (
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SELECT m.sensor_id
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FROM measured_values m
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WHERE m.id = p.measured_value_id
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);
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UPDATE temperatures t
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SET sensor_id = (
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SELECT m.sensor_id
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FROM measured_values m
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WHERE m.id = t.measured_value_id
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);
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-- Delete sensor_id columns
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ALTER TABLE humidities
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DROP COLUMN measured_value_id;
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ALTER TABLE pressures
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DROP COLUMN measured_value_id;
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ALTER TABLE temperatures
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DROP COLUMN measured_value_id;
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-- Add foreign keys
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ALTER TABLE humidities
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ADD CONSTRAINT fk_humidites_sensor_id
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FOREIGN KEY (sensor_id)
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REFERENCES sensors(sensor_id)
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ON DELETE CASCADE
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ON UPDATE CASCADE;
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ALTER TABLE pressures
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ADD CONSTRAINT fk_pressures_sensor_id
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FOREIGN KEY (sensor_id)
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REFERENCES sensors(sensor_id)
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ON DELETE CASCADE
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ON UPDATE CASCADE;
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ALTER TABLE temperatures
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ADD CONSTRAINT fk_temperatures_sensor_id
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FOREIGN KEY (sensor_id)
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REFERENCES sensors(sensor_id)
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ON DELETE CASCADE
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ON UPDATE CASCADE;
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-- drop measured values table
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DROP TABLE measured_values CASCADE;
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