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38 lines
870 B
PHP
Executable File
38 lines
870 B
PHP
Executable File
#!/usr/bin/env php
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<?php
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echo <<< EOT
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ALTER TABLE gb_postcode ADD COLUMN easting bigint;
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ALTER TABLE gb_postcode ADD COLUMN northing bigint;
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TRUNCATE gb_postcode;
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COPY gb_postcode (id, postcode, easting, northing) FROM stdin;
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EOT;
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$iCounter = 0;
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while ($sLine = fgets(STDIN)) {
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$aColumns = str_getcsv($sLine);
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// insert space before the third last position
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// https://stackoverflow.com/a/9144834
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$postcode = $aColumns[0];
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$postcode = preg_replace('/\s*(...)$/', ' $1', $postcode);
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echo join("\t", array($iCounter, $postcode, $aColumns[2], $aColumns[3]))."\n";
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$iCounter = $iCounter + 1;
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}
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echo <<< EOT
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\.
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UPDATE gb_postcode SET geometry=ST_Transform(ST_SetSRID(CONCAT('POINT(', easting, ' ', northing, ')')::geometry, 27700), 4326);
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ALTER TABLE gb_postcode DROP COLUMN easting;
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ALTER TABLE gb_postcode DROP COLUMN northing;
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EOT;
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