Question

我在Spring配置中得到了这个sql属性：

<property name="LAUSFT">
            <value>
                SET @vfrom = ?;
                SET @vto = ?;
                SELECT * FROM (
                SELECT s.*, @rank
                := @rank + 1 rank
                FROM quiz.score s, (SELECT @rank := 0) init
                ORDER BY points DESC
                ) s
                WHERE rank BETWEEN @vfrom AND @vto
                ORDER BY rank;
        </value>
        </property>

如果我在mySQL工作台中执行它，sql运行没有问题。它在我的Dao课程中也是正确的。但是如果我在我的dao类中执行sql，我每次都会遇到这个错误：

    org.springframework.jdbc.BadSqlGrammarException: PreparedStatementCallback; bad SQL grammar [
                SET @vfrom := ?;
                SET @vto := ?;
                SELECT * FROM (
                SELECT s.*, @rank := @rank + 1 rank 
                FROM quiz.score s, (SELECT @rank := 0) init 
                ORDER BY points DESC
                ) s
                WHERE rank BETWEEN @vfrom AND @vto 
                ORDER BY rank;
        ]; nested exception is 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 'SET @vto := 1;
                SELECT * FROM (
                SELECT s.*, @rank := @rank + 1 rank 
                ' at line 2
    at org.springframework.jdbc.support.SQLErrorCodeSQLExceptionTranslator.doTranslate(SQLErrorCodeSQLExceptionTranslator.java:233)
    at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:72)
    at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:603)
    at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:637)
    at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:666)
    at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:674)
    at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:714)
    at de.bc.qz.dao.ScoreDao.loadAllScore(ScoreDao.java:77)
    at de.bc.qz.dao.ScoreDaoTest.testLoadAllScore(ScoreDaoTest.java:44)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
    at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:74)
    at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:83)
    at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:72)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:231)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
    at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
    at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:71)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:174)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:49)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: 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 'SET @vto := 1;
                SELECT * FROM (
                SELECT s.*, @rank := @rank + 1 rank 
                ' at line 2
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
    at com.mysql.jdbc.Util.getInstance(Util.java:381)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1030)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3536)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3468)
    at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1957)
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2107)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2648)
    at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2086)
    at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:2237)
    at org.springframework.jdbc.core.JdbcTemplate$1.doInPreparedStatement(JdbcTemplate.java:644)
    at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:587)
    ... 34 more

我很伤心。一切正常如果我在工作台中运行sql那么问题出在哪里？

这里是java函数：

public List<Score> loadAllScore(int pFrom, int pTo) {
    return createJdbcTemplate()
            .query(mLAUSFT,
                    new Object[] { pFrom, pTo }, mScoreMapper);
}

感谢您的帮助。

Answer 1

jdbc语句是一个单独的sql指令。

在这里，您尝试在一个语句中运行多个sql指令。您必须在;上拆分sql并为每条指令创建一个执行语句。

来自official doc：

Statement是一个表示SQL语句的接口。

从spring属性加载SQL不会运行

1 个答案: