列「name_c」找不到運行在H2

我與H2的單元測試在內存中的情況下工作的查詢

SELECT name AS name_c FROM users ORDER BY lower(name_c)

（真正的查詢要複雜得多，但這種簡單的查詢具有相同的症狀）

我收到以下異常：

org.h2.jdbc.JdbcSQLException: Column "NAME_C" not found; SQL statement: 
SELECT name AS "name_c" FROM users ORDER BY lower(name_c) [42122-163] 
    at org.h2.message.DbException.getJdbcSQLException(DbException.java:329) 
    at org.h2.message.DbException.get(DbException.java:169) 
    at org.h2.message.DbException.get(DbException.java:146) 
    at org.h2.expression.ExpressionColumn.optimize(ExpressionColumn.java:138) 
    at org.h2.expression.Function.optimize(Function.java:1705) 
    at org.h2.command.dml.Select.prepare(Select.java:799) 
    at org.h2.command.Parser.prepareCommand(Parser.java:218) 
    at org.h2.engine.Session.prepareLocal(Session.java:415) 
    at org.h2.engine.Session.prepareCommand(Session.java:364) 
    at org.h2.jdbc.JdbcConnection.prepareCommand(JdbcConnection.java:1121) 
    at org.h2.jdbc.JdbcStatement.executeInternal(JdbcStatement.java:164) 
    at org.h2.jdbc.JdbcStatement.execute(JdbcStatement.java:152) 
    at org.apache.commons.dbcp.DelegatingStatement.execute(DelegatingStatement.java:264) 
    at org.apache.commons.dbcp.DelegatingStatement.execute(DelegatingStatement.java:264) 
    at com.name.dal.Connection.executeQuery(Connection.java:462) 
    at com.name.model.users.UserTest.testTest(UserTest.java:324) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
    at java.lang.reflect.Method.invoke(Method.java:597) 
    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.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28) 
    at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:30) 
    at org.junit.rules.RunRules.evaluate(RunRules.java:18) 
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263) 
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68) 
    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.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28) 
    at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:30) 
    at org.junit.runners.ParentRunner.run(ParentRunner.java:300) 
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50) 
    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)

任何人都知道這是爲什麼？

我使用下面的連接字符串創建數據庫：

jdbc:h2:mem:db1;MODE=MYSQL;DB_CLOSE_DELAY=60;IGNORECASE=TRUE

感謝，

來源

2013-02-07 bgme_one

嘗試將'ORDER BY lower（name_c）'更改爲'ORDER BY lower（name）'。 –

謝謝，但我必須使用lower（name_c）。較低（名稱）正常工作。在我真正的查詢中，name_c不是直接的列，而是從select子句中運行的查詢中的計算列。類似於： SELECT（SELECT name FROM other_users WHERE ...）AS name_c FROM users –

列別名，如果它們被用作是（單獨）僅是order by子句中使用。這與其他數據庫的行爲相同（根據我的測試，PostgreSQL和Derby）。有一些數據庫支持你想要的（例如MySQL），但這不是SQL標準的一部分。因此，例如：

create table test(id int primary key, name varchar(255)); 
insert into test values(1, 'hello'); 
insert into test values(2, 'world');

這適用於所有的數據庫，我測試：

select name as c_name from test order by c_name; 
select name as c_name from test order by lower(name);

有了這些數據，下面的查詢失敗，我的PostgreSQL，Apache Derby和H2。它適用於MySQL：

select name as c_name from test order by lower(c_name);

來源

2013-02-07 22:02:46

好的，謝謝！我真正的DB確實是MySql –

列「name_c」找不到運行在H2

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