com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorExceptionはTABLE

Question

com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorExceptionをCREATE：あなたは、私がcreate_table(String table_name)機能を持っているあなたのSQL構文で

をエラーが発生しています。私が理解できないSQL構文エラーがあるようです。私は似たような質問をしたスレッドをたくさん見つけ、そのほとんどは未回答です。どんな提案もありがとうございます。

完全なスタックトレース：

com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: 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 '1006 (Date VARCHAR(10) NOT NULL, Weight FLOAT NOT NULL, Amount FLOAT NOT NULL, P' at line 1 
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) 
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57) 
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) 
at java.lang.reflect.Constructor.newInstance(Constructor.java:525) 
at com.mysql.jdbc.Util.handleNewInstance(Util.java:404) 
at com.mysql.jdbc.Util.getInstance(Util.java:387) 
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:939) 
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3878) 
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3814) 
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2478) 
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2625) 
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2547) 
at com.mysql.jdbc.StatementImpl.executeUpdateInternal(StatementImpl.java:1541) 
at com.mysql.jdbc.StatementImpl.executeLargeUpdate(StatementImpl.java:2605) 
at com.mysql.jdbc.StatementImpl.executeUpdate(StatementImpl.java:1469) 
at com.appsmith.card_io.IOstream.create_table(IOstream.java:249) 
at com.appsmith.card_io.IOstream$1.actionPerformed(IOstream.java:110) 
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018) 
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341) 
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402) 
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259) 
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252) 
at java.awt.Component.processMouseEvent(Component.java:6505) 
at javax.swing.JComponent.processMouseEvent(JComponent.java:3321) 
at java.awt.Component.processEvent(Component.java:6270) 
at java.awt.Container.processEvent(Container.java:2229) 
at java.awt.Component.dispatchEventImpl(Component.java:4861) 
at java.awt.Container.dispatchEventImpl(Container.java:2287) 
at java.awt.Component.dispatchEvent(Component.java:4687) 
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832) 
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492) 
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422) 
at java.awt.Container.dispatchEventImpl(Container.java:2273) 
at java.awt.Window.dispatchEventImpl(Window.java:2719) 
at java.awt.Component.dispatchEvent(Component.java:4687) 
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:703) 
at java.awt.EventQueue.access$000(EventQueue.java:102) 
at java.awt.EventQueue$3.run(EventQueue.java:662) 
at java.awt.EventQueue$3.run(EventQueue.java:660) 
at java.security.AccessController.doPrivileged(Native Method) 
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76) 
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87) 
at java.awt.EventQueue$4.run(EventQueue.java:676) 
at java.awt.EventQueue$4.run(EventQueue.java:674) 
at java.security.AccessController.doPrivileged(Native Method) 
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76) 
at java.awt.EventQueue.dispatchEvent(EventQueue.java:673) 
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:244) 
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:163) 
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151) 
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:147) 
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:139) 
at java.awt.EventDispatchThread.run(EventDispatchThread.java:97) 

作成表関数：から

public void create_table(String table_name) { 
    StringBuilder sql = new StringBuilder(); 
    sql.append(String.format("CREATE TABLE %s ", table_name)); 
    sql.append("(Date VARCHAR(10) NOT NULL, "); 
    sql.append("Weight FLOAT NOT NULL, "); 
    sql.append("Amount FLOAT NOT NULL, "); 
    sql.append("PRIMARY KEY (Date))"); 
    Statement stmt = null; 
    try { 
     stmt = conn.createStatement(); 
     stmt.executeUpdate(sql.toString()); //IOstream.java:249 
    } catch (SQLException e) {   
     e.printStackTrace(); 
    } 
} 

Answer 1

docs

数字で始めることができるが

識別子のみから構成されていないことが引用されない限り、数字の

のでまだテーブル名を引用またはレター

sql.append(String.format("CREATE TABLE `%s` ", table_name));