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ApexSQL Knowledgebase Tips and How-to Articles for ApexSQL Tools Why ApexSQL Recover doesn't recover indexes, primary keys and identity for drop data recovery DESCRIPTION When I try to recover data from a drop table operation, ApexSQL Recover does not generate code for the primary key and other indexes. SOLUTION When doing recovery data lost, the simplest form of table schema is recovered on purpose. No IDENTITY, NULL/NOT NULL flags, primary key, default values or indexes are created - just column names with its data types. This is done because recovery process is not always unambiguous and can lead to duplicated rows depending on the database state. If we were to recover full table structure (as we did originally) it could lead to conflicting INSERT operation and possible data loss at the level of script. On the other hand, since the full table structure is generally known to the users, anyway there is no real loss - after the recovery the table just needs to be manually updated to its proper structure. AUTHOR Dmitriy Dyubchenko LAST REVIEW DATE 17 August 2009 Labels: ApexSQL Recover |
