com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException TABLO

Question

com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException CREATE: Eğer SQL sözdizimi

bir hata var ben bir create_table(String table_name) işlevi var. Anlayamadığım bir SQL sözdizimi hatası var gibi görünüyor. Benzer soruları olan birçok konu buldum ve çoğu cevapsız bırakıldı. Her türlü önerinize açığız.

tam bir yığın iz:

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) 

oluşturmak tablo işlevi: kaynaktan

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

bir rakam ile başlar, ancak olabilir

Tanımlayıcılar ibarettir olmayabilir belirtilmediği takdirde basamakların Bu nedenle

ya tablo adını alıntı veya bir mektubu

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