Revision 6947
Added by ben leinfelder about 11 years ago
| upgrade-db-to-2.0.0-oracle.sql | ||
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* Update the accessfileid to use guid |
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* NOTE: uses the last revision's guid as the new accessfileid |
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*/ |
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CREATE TABLE max_identifier (guid VARCHAR2(2000), docid VARCHAR2(250), rev NUMBER(8)); |
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/** insert the max rev identifier for each document **/ |
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INSERT INTO max_identifier (docid, rev, guid) |
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SELECT docid, MAX(rev), docid || '.' || MAX(rev) |
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FROM identifier |
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GROUP BY docid |
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/** only need to join on docid since there is a single row for the max docid **/ |
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UPDATE xml_access |
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SET accessfileid = id.guid |
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FROM identifier id, xml_access xa |
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WHERE xa.accessfileid = id.docid |
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AND id.rev = |
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(SELECT MAX(id2.rev) FROM identifier id2 WHERE id.docid = id2.docid); |
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SET accessfileid = maxid.guid |
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FROM max_identifier maxid, xml_access xa |
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WHERE xa.accessfileid = maxid.docid |
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AND xa.guid IS NOT null |
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DROP TABLE max_identifier; |
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/** |
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* Remove old access rules |
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*/ |
Also available in: Unified diff
use a temporary table to calculate the maximum revision for a given docid and use that when setting the accessfileid during upgrade. the query plan for the all-in-one statement must be brutal as it's been running for 4 hours at this point....