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task #9082

Updated by Andreas Müller over 3 years ago

Especially for Person.lifespan_end and Person.lifespan_start the problem existed. See #9081 

 ~~~ 
 UPDATE AgentBase  
 SET lifespan_start = NULL, lifespan_end = NULL 
 WHERE lifespan_start = '00000000' && lifespan_end = '00000000' 
 ~~~ 

 better split the command but these seem to appear always together. 

 Also check for occurrence in other TimePeriod usages. 

 Further classes are: 

 * InstitutionalMembership.period 
 * !! EventBase.timeperiod 
      * Amplification. 
      * DerivationEvent 
      * DeterminationEvent 
      * GatheringEvent 
      * SingleRead 
      * MaterialOrMethodEvent. 
 * DescriptionElementBase.timeperiod 
 * DescriptionElementBase.period    (for TermporalData) 
 * DefinedTermBase.validPeriod    (for NamedArea) 
 * Media.mediaCreated 
 * Reference.datePublished 
 * Classification.timeperiod

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