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The following page has been changed by ChrisHarris: http://wiki.apache.org/solr/UpdateXmlMessages The comment on the change is: Noting that delete by query will be faster in 1.3 ------------------------------------------------------------------------------ }}} === "delete" by ID and by Query === - Delete by id uses the uniqueKey field declared in the schema (in these examples, employeeId). - Delete by id is much more efficient than delete by query. + + Delete by id deletes the document with the specified ID. (ID here means the value of the uniqueKey field declared in the schema (in these examples, employeeId). + + Delete by query deletes all the documents that match the specified query. + Example: {{{ <delete><id>05991</id></delete> <delete><query>office:Bridgewater</query></delete> }}} + + In Solr 1.2, delete query is ''much'' less efficient than delete by id, because Solr has to do much of the commit logic each time it receives a delete by query request. In Solr 1.3, however, most of the overhead will have been removed. ==== Optional attributes for "delete" ====
