sql - Delete a broken postgreSQL table -

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My postgresqual has a table of ~ 20 million and I want to delete it.

But every one of them does not work (it's still running more than 12 hours without success): 

  - Delete - Trunket - Vacuum - Analysis   
 I can not do anything in this table ...  
 A few days ago, I tried to reproduce the ID (large number) of each line  
  ALTER SEQUENCE "data_ id_seq" 1 Update with data Restart SET ID = Aggravation ('data_id_seq')   
 and I think That This operation breaks the table ...  
 If anyone knows how to help, thanks!   
 
 
 Try it ...  
  drop table table_name;

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