SQL查询执行MySQL工作台，但不是在生产

Question

问题

SQL查询：

SELECT COUNT(suggestedfood.id) AS num_same, suggestedfood.place_id FROM suggestedfood WHERE suggestedfood.group_id=? AND suggestedfood.selected=? AND suggestedfood.removed=? GROUP BY suggestedfood.place_id LIMIT 1

这个查询能够到MySQL Workbench中运行，但在生产中它抛出这个错误：

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 '? AND suggestedfood.selected=? AND suggestedfood.removed=? GROUP BY suggestedfoo' at line 1

MySQL Error code: 1064

MySQL State: 42000

MySQL服务器位于AWS RDS上，如果有帮助，并且运行SQL查询的代码是Glassfish上的Java容器。还有许多其他查询能够运行，这只是给我麻烦的一个。

如果任何人都可以指出我的一个简单的错误，那就太好了。或者如果有人知道我可以如何更好地诊断这个问题，那将非常感激。

编辑，这里是我的Java代码，如要求group_id is a long

long numSame = 0L; 
String count = "SELECT COUNT(" + SUGGESTEDFOOD_ID + ") AS num_same, " 
    + SUGGESTEDFOOD_PLACEID + " FROM " + SUGGESTEDFOOD 
    + " WHERE " + SUGGESTEDFOOD_GROUP_ID + "=? AND " 
    + SUGGESTEDFOOD_SELECTED + "=? AND " 
    + SUGGESTEDFOOD_REMOVED + "=? " 
    + "GROUP BY " 
    + SUGGESTEDFOOD_PLACEID + " LIMIT 1"; 
PreparedStatement ps = conn.connection.prepareStatement(count); 
ps.setLong(1, group_id); 
ps.setBoolean(2, true); 
ps.setBoolean(3, false); 
/* Line 607 */ ResultSet rs = ps.executeQuery(count); 
while (rs.next()) { 
    numSame = rs.getLong("num_same"); 
} 

以下是完整的堆栈跟踪：

com.mysql.jdbc.exceptions.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 '? AND suggestedfood.selected=? AND suggestedfood.Removed=? GROUP BY suggestedfoo' at line 1 
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:936) 
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2985) 
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1631) 
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1723) 
at com.mysql.jdbc.Connection.execSQL(Connection.java:3277) 
at com.mysql.jdbc.Connection.execSQL(Connection.java:3206) 
at com.mysql.jdbc.Statement.executeQuery(Statement.java:1232) 
at com.cow10.endpoints.FoodSessionHandler.togglePlace(FoodSessionHandler.java:607) 
at com.cow10.endpoints.FoodSessionHandler$Proxy$_$$_WeldClientProxy.togglePlace(Unknown Source) 
at com.cow10.endpoints.FoodWebSocket.handleMessage(FoodWebSocket.java:91) 
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
at java.lang.reflect.Method.invoke(Method.java:498) 
at org.glassfish.tyrus.core.AnnotatedEndpoint.callMethod(AnnotatedEndpoint.java:477) 
at org.glassfish.tyrus.core.AnnotatedEndpoint.access$100(AnnotatedEndpoint.java:87) 
at org.glassfish.tyrus.core.AnnotatedEndpoint$WholeHandler$1.onMessage(AnnotatedEndpoint.java:573) 
at org.glassfish.tyrus.core.TyrusSession.notifyMessageHandlers(TyrusSession.java:542) 
at org.glassfish.tyrus.core.TyrusEndpointWrapper.onMessage(TyrusEndpointWrapper.java:748) 
at org.glassfish.tyrus.core.TyrusWebSocket.onMessage(TyrusWebSocket.java:200) 
at org.glassfish.tyrus.core.frame.TextFrame.respond(TextFrame.java:135) 
at org.glassfish.tyrus.core.ProtocolHandler.process(ProtocolHandler.java:622) 
at org.glassfish.tyrus.core.TyrusWebSocketEngine$TyrusReadHandler.handle(TyrusWebSocketEngine.java:394) 
at org.glassfish.tyrus.servlet.TyrusHttpUpgradeHandler.onDataAvailable(TyrusHttpUpgradeHandler.java:164) 
at org.apache.catalina.connector.InputBuffer$ReadHandlerImpl.processDataAvailable(InputBuffer.java:488) 
at org.apache.catalina.connector.InputBuffer$ReadHandlerImpl.onDataAvailable(InputBuffer.java:453) 
at org.glassfish.grizzly.http.io.InputBuffer.invokeHandler(InputBuffer.java:1101) 
at org.glassfish.grizzly.http.io.InputBuffer.invokeHandlerOnProperThread(InputBuffer.java:1092) 
at org.glassfish.grizzly.http.io.InputBuffer.append(InputBuffer.java:975) 
at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:271) 
at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119) 
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:284) 
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:201) 
at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:133) 
at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:112) 
at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77) 
at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:561) 
at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:112) 
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:117) 
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:56) 
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:137) 
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:565) 
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:545) 
at java.lang.Thread.run(Thread.java:748)]] 

Answer 1

一个典型的错误。

ResultSet rs = ps.executeQuery(count); 

应该是

ResultSet rs = ps.executeQuery(); 

作为ps是延伸Statement一个PreparedStatement，和executeQuery(String)是不可用的声明方法。

应该有人创建一个类似的API，覆盖executeQuery(String)并使其具有良好的javadoc的@Deprecated。

Answer 2

问号?是该声明的情况下无效; MySQL不会将它看作数字文字，字符串文字或有效的引用。

我们也会导致同样的错误运行这样一个简单的查询：

和MySQL返回此错误：

Error Code: 1064 
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 '?, NOW()' at line 1 

---

这个问号字符很可能意味着是一个一个绑定变量的占位符。在没有看到实际代码的情况下，我们只是猜测......我们希望将SQL文本作为参数传递给prepareStatement，然后在执行之前调用适当的方法将变量绑定到占位符。

PreparedSatement ps = con.prepareStatement(sqltext); 
    ps.setInt(1,groupId); 
    ps.setInt(2,selected); 
    ps.setInt(3,removed); 

---

编辑

这个答案被张贴之前 OP的问题添加任何Java代码。正如Joop Eggen的回答指出的那样，在（现在提供的）OP代码中这是一个简单的问题......参数在executeQuery方法中提供。不要为准备好的声明做到这一点。

Answer 3

尝试在=和？之间添加一个空格。

String count = "SELECT COUNT(" + SUGGESTEDFOOD_ID + ") AS num_same, " 
    + SUGGESTEDFOOD_PLACEID + " FROM " + SUGGESTEDFOOD 
    + " WHERE " + SUGGESTEDFOOD_GROUP_ID + "= ? AND " 
    + SUGGESTEDFOOD_SELECTED + "= ? AND " 
    + SUGGESTEDFOOD_REMOVED + "= ? " 
    + "GROUP BY " 
    + SUGGESTEDFOOD_PLACEID + " LIMIT 1";