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h2database
Commits
182c28f8
提交
182c28f8
authored
1月 20, 2010
作者:
Thomas Mueller
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Documentation.
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c264653e
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6 个修改的文件
包含
19 行增加
和
6 行删除
+19
-6
advanced.html
h2/src/docsrc/html/advanced.html
+1
-1
features.html
h2/src/docsrc/html/features.html
+2
-1
h2-logo_square.png
h2/src/docsrc/html/images/h2-logo_square.png
+0
-0
performance.html
h2/src/docsrc/html/performance.html
+7
-0
roadmap.html
h2/src/docsrc/html/roadmap.html
+1
-1
ErrorCode.java
h2/src/main/org/h2/constant/ErrorCode.java
+8
-3
没有找到文件。
h2/src/docsrc/html/advanced.html
浏览文件 @
182c28f8
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@@ -77,7 +77,7 @@ Advanced
<h3>
Statements that Return a Result Set
</h3>
<p>
The following statements return a result set:
<code>
SELECT, EXPLAIN, CALL, SCRIPT
</code>
.
The following statements return a result set:
<code>
SELECT, EXPLAIN, CALL, SCRIPT
, SHOW, HELP
</code>
.
All other statements return an update count.
</p>
...
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h2/src/docsrc/html/features.html
浏览文件 @
182c28f8
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@@ -1180,7 +1180,8 @@ open, one of them will then start a server (auto-reconnect is enabled automatica
</p>
<p>
All processes need to have access to the database files.
If the first connection is closed (the connection that started the server), open transactions of other connections will be rolled back.
If the first connection is closed (the connection that started the server), open transactions of other connections will be rolled back
(this may not be a problem if you don't disable autocommit).
Explicit client/server connections (using
<code>
jdbc:h2:tcp://
</code>
or
<code>
ssl://
</code>
) are not supported.
This mode is not supported for in-memory databases.
</p>
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h2/src/docsrc/html/images/h2-logo_square.png
0 → 100644
浏览文件 @
182c28f8
2.3 KB
h2/src/docsrc/html/performance.html
浏览文件 @
182c28f8
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@@ -351,6 +351,13 @@ profiler.startCollecting();
profiler.stopCollecting();
System.out.println(profiler.getTop(3));
</pre>
<p>
The profiler is built into the H2 Console tool, to analyze databaseses that open slowly.
To use it, run the H2 Console, and then click on 'Test Connection'.
Afterwards, click on "Test successful" and you get the most common stack traces,
which helps to find out why it took so long to connect. You will only get the stack traces
if opening the database took more than a few seconds.
</p>
<h2
id=
"database_profiling"
>
Database Profiling
</h2>
<p>
...
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h2/src/docsrc/html/roadmap.html
浏览文件 @
182c28f8
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@@ -471,7 +471,7 @@ See also <a href="build.html#providing_patches">Providing Patches</a>.
</li><li>
Implement GiST (Generalized Search Tree for Secondary Storage).
</li><li>
Function to read a number of bytes/characters from an BLOB or CLOB.
</li><li>
Issue 156: Support SELECT ? UNION SELECT ?.
</li><li>
Automatic mixed mode: support a port range list (to avoid firewall problems)
</li><li>
Automatic mixed mode: support a port range list (to avoid firewall problems)
.
</li></ul>
<h2>
Not Planned
</h2>
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h2/src/main/org/h2/constant/ErrorCode.java
浏览文件 @
182c28f8
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@@ -1268,9 +1268,14 @@ public class ErrorCode {
public
static
final
int
CANNOT_DROP_LAST_COLUMN
=
90084
;
/**
* The error with code <code>90085</code> is thrown when trying to
* manually drop an index that was generated by the system because of a
* unique constraint.
* The error with code <code>90085</code> is thrown when
* trying to manually drop an index that was generated by the system
* because of a unique or referential constraint. To find out what
* constraint causes the problem, run:
* <pre>
* SELECT * FROM INFORMATION_SCHEMA.CONSTRAINTS
* WHERE UNIQUE_INDEX_NAME = '<index name>';
* </pre>
* Example of wrong usage:
* <pre>
* CREATE TABLE TEST(ID INT, CONSTRAINT UID UNIQUE(ID));
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