JDBC 1064 SQL語法錯誤

Question

我想在Java Web Service的操作中使用JDBC處理MySQL數據庫。 我：

stmt = conn.createStatement(); 

String query = "CREATE TABLE Basestations (Network_Id INT," 
        + "Basestation_Id INT, Signal_Strength DOUBLE," 
        + "Frequency DOUBLE, Network_Type VARCHAR(40), Max_Bitrate DOUBLE," 
        + "Guaranteed_Bitrate DOUBLE, Net_Load INT," 
        + "Provider VARCHAR(45), Range DOUBLE, X INT, Y INT," 
        + "Port INT, Charging VARCHAR(40), Active BOOLEAN);"; 

stmt.execute(query); 

創建我的表，但是這會導致：

INFO: SQL Exception: INFO: State : 42000 INFO: Message: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'Range DOUBLE, X INT, Y INT,Port INT, Charging VARCHAR(40), Active BOOLEAN)' at line 1 INFO: Error : 1064

什麼是錯我的語法？

Answer 1

RANGE是reserved keyword is MySQL。相反，圍繞Range與`（反向）。

String query = "CREATE TABLE Basestations (Network_Id INT," 
        + "Basestation_Id INT, Signal_Strength DOUBLE," 
        + "Frequency DOUBLE, Network_Type VARCHAR(40), Max_Bitrate DOUBLE," 
        + "Guaranteed_Bitrate DOUBLE, Net_Load INT," 
        + "Provider VARCHAR(45), `Range` DOUBLE, X INT, Y INT," 
        + "Port INT, Charging VARCHAR(40), Active BOOLEAN);"; 

Answer 2

RANGE是MySQL reserved word。 使用反引號'`'引用此字段名稱。