Union

Drivers and their cars that have been involved in accidents

Acc_victim <union> Acc_cause

Acc_victim car driver year
  CEF234 Mike 2000
DFG456 Bill 2000
DFG456 Bill 2001

Acc_cause car driver year
  ABC123 Mary 2001
DFG456 Bill 2001
CEF234 David 2000

 

 

AUDIO: All the rows of the first operand (Accident victim) are included in the result

 
RESULT car driver year
  CEF234 Mike 2000
DFG456 Bill 2000
DFG456 Bill 2001

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