Source
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ALTER TABLE ONLY trends
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ALTER COLUMN value_min TYPE DOUBLE PRECISION,
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+
ALTER COLUMN value_min SET DEFAULT '0.0000',
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ALTER COLUMN value_avg TYPE DOUBLE PRECISION,
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-
ALTER COLUMN value_max TYPE DOUBLE PRECISION;
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-
ALTER TABLE ONLY history ALTER COLUMN value TYPE DOUBLE PRECISION;
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ALTER COLUMN value_avg SET DEFAULT '0.0000',
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ALTER COLUMN value_max TYPE DOUBLE PRECISION,
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ALTER COLUMN value_max SET DEFAULT '0.0000';
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ALTER TABLE ONLY history
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ALTER COLUMN value TYPE DOUBLE PRECISION,
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ALTER COLUMN value SET DEFAULT '0.0000';