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  1. CREATE TABLE Persons
  2.  (
  3.  P_Id1 int,
  4.  P_Id2 int,
  5.  P_Id3 int
  6.  );
  7.  
  8. INSERT INTO Persons
  9.  VALUES (12, 13, 14);
  10.  
  11. INSERT INTO Persons
  12.  VALUES (1, 17, 3);
  13.  
  14. select max(max(P_Id1),max(P_Id2),max(P_Id3)) from Persons;
Success #stdin #stdout 0s 2964KB
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https://ideone.com/aUzeFk
language:
SQLite (sqlite 3.27.2)
created:
11 years ago
visibility:
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