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

Question

com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException：您的 SQL 语法有误

我有一个 create_table(String table_name) 函数。似乎有一个我无法弄清楚的 SQL 语法错误。我发现了很多有类似问题的线程，其中大部分都没有得到回答。任何建议将不胜感激。

完整的堆栈跟踪：

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.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[=13=]0(EventQueue.java:102)
at java.awt.EventQueue.run(EventQueue.java:662)
at java.awt.EventQueue.run(EventQueue.java:660)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.security.ProtectionDomain.doIntersectionPrivilege(ProtectionDomain.java:87)
at java.awt.EventQueue.run(EventQueue.java:676)
at java.awt.EventQueue.run(EventQueue.java:674)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain.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)

创建 table 函数：

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

来自docs

Identifiers may begin with a digit but unless quoted may not consist solely of digits.

因此要么引用 table 名称，要么重命名它以包含一个字母

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

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

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

java

mysql

jdbc

create-table