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improve import performance for special phrases

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- create a temporary index on placex
- create indices on place_classtype_* tables after insert
- grant www-data permission to tables
This commit is contained in:
Sarah Hoffmann
2012-01-28 23:27:25 +00:00
parent acadfcb2c5
commit c5e69fadd0
1 changed files with 6 additions and 5 deletions
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11
utils/specialphrases.php
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@@ -81,13 +81,15 @@
}
}
echo "create index idx_placex_classtype on placex (class, type);";
foreach($aPairs as $aPair)
{
if ($aPair[1] == 'highway') continue;
echo "create table place_classtype_".pg_escape_string($aPair[0])."_".pg_escape_string($aPair[1])." as ";
echo "select place_id as place_id,st_centroid(geometry) as centroid from placex where ";
echo "class = '".pg_escape_string($aPair[0])."' and type = '".pg_escape_string($aPair[1])."' limit 0;\n";
echo "class = '".pg_escape_string($aPair[0])."' and type = '".pg_escape_string($aPair[1])."';\n";
echo "CREATE INDEX idx_place_classtype_".pg_escape_string($aPair[0])."_".pg_escape_string($aPair[1])."_centroid ";
echo "ON place_classtype_".pg_escape_string($aPair[0])."_".pg_escape_string($aPair[1])." USING GIST (centroid);\n";
@@ -95,10 +97,9 @@
echo "CREATE INDEX idx_place_classtype_".pg_escape_string($aPair[0])."_".pg_escape_string($aPair[1])."_place_id ";
echo "ON place_classtype_".pg_escape_string($aPair[0])."_".pg_escape_string($aPair[1])." USING btree(place_id);\n";
echo "truncate place_classtype_".pg_escape_string($aPair[0])."_".pg_escape_string($aPair[1]).";\n";
echo "insert into place_classtype_".pg_escape_string($aPair[0])."_".pg_escape_string($aPair[1])." ";
echo "select place_id as place_id,st_centroid(geometry) as centroid from placex where ";
echo "class = '".pg_escape_string($aPair[0])."' and type = '".pg_escape_string($aPair[1])."';\n";
echo "GRANT SELECT ON place_classtype_".pg_escape_string($aPair[0])."_".pg_escape_string($aPair[1])." TO \"www-data\";";
}
echo "drop index idx_placex_classtype;";
}