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

Question

com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException：您在您的SQL語法

有一個錯誤我有一個create_table(String table_name)功能。似乎有一個SQL語法錯誤，我無法弄清楚。我發現很多有類似問題的線索，其中大部分都沒有答案。任何建議，將不勝感激。

完整的堆棧跟蹤：

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) 

創建表功能：

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

從docs

標識符可以以數字開始，但除非報價可能並不僅僅在於數字。

因此要麼引用表名或重新命名它包括一個字母

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