7 lines
493 B
SQL
7 lines
493 B
SQL
-- migrate the dataset to use the new coordinate system conversion: before the change,
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-- we convert coordinates with "origin_y - window_height". After the change, we convert
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-- the coordinates with "-(origin_y + window_height)". The delta defined here makes
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-- sure the coordinate will be valid after the new conversion
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-- "-(origin_y - window_height) - 2 * window_height = -(origin_y + window_height)".
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UPDATE windows SET origin_y = -origin_y - 2 * window_height WHERE origin_y IS NOT NULL;
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