mysql查询没有主键的表

mysql查询没有主键的表

• 
  
• select table_schema, table_name
  from information_schema.tables
  where table_name not in (select distinct table_name
  from information_schema.columns
  where column_key = "PRI")
  AND table_schema not in
  ('mysql', 'information_schema', 'sys', 'performation_schema');
   
• 
  

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