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import TIGER data into temporary table

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Import TIGER data into a temporary table first that later replaces
the current location_property_tiger table. This way index creation
on the table can be delayed until after the import which should
speed up the import and result in significantly smaller indexes.

Also removed index on parent_place_id as it is covered by
idx_location_property_tiger_housenumber_parent_place_id.
This commit is contained in:
Sarah Hoffmann
2012-08-18 10:22:35 +02:00
parent c41b6067fe
commit 55b59ea139
4 changed files with 106 additions and 87 deletions
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12
sql/tiger_import_finish.sql Normal file
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CREATE INDEX idx_location_property_tiger_housenumber_parent_place_id_imp ON location_property_tiger_import (parent_place_id, housenumber);
CREATE UNIQUE INDEX idx_location_property_tiger_place_id_imp ON location_property_tiger_import (place_id);
GRANT SELECT ON location_property_tiger_import TO "www-data";
DROP TABLE location_property_tiger;
ALTER TABLE location_property_tiger_import RENAME TO location_property_tiger;
ALTER INDEX idx_location_property_tiger_housenumber_parent_place_id_imp RENAME TO idx_location_property_tiger_housenumber_parent_place_id;
ALTER INDEX idx_location_property_tiger_place_id_imp RENAME TO idx_location_property_tiger_place_id;
DROP FUNCTION tigger_create_interpolation (linegeo geometry, in_startnumber integer, in_endnumber integer, interpolationtype text, in_street text, in_isin text, in_postcode text);