提交 7f5f2067 authored 作者: Thomas Mueller's avatar Thomas Mueller

Documentation.

上级 c3d27975
......@@ -1077,6 +1077,12 @@ or the SQL statement <code>SET MODE MySQL</code>.
</li><li>Concatenating <code>NULL</code> with another value
results in the other value.
</li></ul>
<p>
Text comparison in MySQL is case insensitive by default, while in H2 it is case sensitive (as in most other databases).
H2 does support case insensitive text comparison, but it needs to be set separately,
using <code>SET IGNORECASE TRUE</code>.
This affects comparison using <code>=, LIKE, REGEXP</code>.
</p>
<h3>Oracle Compatibility Mode</h3>
<p>
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......@@ -35,14 +35,16 @@ See also <a href="build.html#providing_patches">Providing Patches</a>.
</li></ul>
<h2>Priority 2</h2>
<ul><li>Access rights: remember the owner of an object. Create, alter and drop privileges. COMMENT: allow owner of object to change it. Issue 208. Access rights for schemas.
<ul><li>Full outer joins.
</li><li>Access rights: remember the owner of an object. Create, alter and drop privileges. COMMENT: allow owner of object to change it. Issue 208. Access rights for schemas.
</li><li>Test multi-threaded in-memory db access.
</li><li>Support hints for the optimizer (which index to use, enforce the join order).
</li><li>Migrate database tool (also from other database engines). For Oracle, maybe use
DBMS_METADATA.GET_DDL / GET_DEPENDENT_DDL.
</li><li>Full outer joins.
</li><li>Clustering: support mixed clustering mode (one embedded, others in server mode).
</li><li>Clustering: reads should be randomly distributed (optional) or to a designated database on RAM (parameter: READ_FROM=3).
</li><li>Window functions: RANK() and DENSE_RANK(), partition using OVER().
select *, count(*) over() as fullCount from ... limit 4;
</li><li>PostgreSQL catalog: use BEFORE SELECT triggers instead of views over metadata tables.
</li><li>Compatibility: automatically load functions from a script depending on the mode - see FunctionsMySQL.java, issue 211.
</li><li>Test very large databases and LOBs (up to 256 GB).
......@@ -66,7 +68,6 @@ See also <a href="build.html#providing_patches">Providing Patches</a>.
</li><li>CHECK: find out what makes CHECK=TRUE slow, move to CHECK2.
</li><li>Drop with invalidate views (so that source code is not lost). Check what other databases do exactly.
</li><li>Index usage for (ID, NAME)=(1, 'Hi'); document.
</li><li>RANK() and DENSE_RANK(), Partition using OVER().
</li><li>Set a connection read only (Connection.setReadOnly) or using a connection parameter.
</li><li>Access rights: finer grained access control (grant access for specific functions).
</li><li>Version check: docs / web console (using Javascript), and maybe in the library (using TCP/IP).
......@@ -311,6 +312,7 @@ See also <a href="build.html#providing_patches">Providing Patches</a>.
</li><li>MySQL compatibility: for auto_increment columns, convert 0 to next value (as when inserting NULL).
</li><li>Optimization for multi-column IN: use an index if possible. Example: (A, B) IN((1, 2), (2, 3)).
</li><li>Optimization for EXISTS: convert to inner join or IN(..) if possible.
</li><li>MySQL compatibility: multi-table delete: DELETE .. FROM .. [,...] USING - See http://dev.mysql.com/doc/refman/5.0/en/delete.html
</li><li>Functions: support hashcode(value); cryptographic and fast
</li><li>Serialized file lock: support long running queries.
</li><li>Network: use 127.0.0.1 if other addresses don't work.
......@@ -325,7 +327,6 @@ See also <a href="build.html#providing_patches">Providing Patches</a>.
</li><li>Doclet: format fields like methods, but support sorting by name and value.
</li><li>Doclet: shrink the html files.
</li><li>MySQL compatibility: support SET NAMES 'latin1' - See also http://code.google.com/p/h2database/issues/detail?id=56
</li><li>MySQL compatibility: DELETE .. FROM .. USING - See http://dev.mysql.com/doc/refman/5.0/en/delete.html
</li><li>Allow to scan index backwards starting with a value (to better support ORDER BY DESC).
</li><li>Java Service Wrapper: try http://yajsw.sourceforge.net/
</li><li>Batch parameter for INSERT, UPDATE, and DELETE, and commit after each batch. See also MySQL DELETE.
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