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提交 fa002664 authored 作者: Thomas Mueller's avatar Thomas Mueller
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h2/src/docsrc/html/features.html
浏览文件 @ fa002664
...@@ -767,7 +767,6 @@ must be escaped, as in the example below. ...@@ -767,7 +767,6 @@ must be escaped, as in the example below.
String url = "jdbc:h2:mem;INIT=RUNSCRIPT FROM '~/create.sql'\\;RUNSCRIPT FROM '~/populate.sql'"; String url = "jdbc:h2:mem;INIT=RUNSCRIPT FROM '~/create.sql'\\;RUNSCRIPT FROM '~/populate.sql'";
</pre> </pre>
<h2 id="ignore_unknown_settings">Ignore Unknown Settings</h2> <h2 id="ignore_unknown_settings">Ignore Unknown Settings</h2>
<p> <p>
Some applications (for example OpenOffice.org Base) pass some additional parameters Some applications (for example OpenOffice.org Base) pass some additional parameters
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h2/src/docsrc/html/roadmap.html
浏览文件 @ fa002664
...@@ -22,163 +22,154 @@ Of course, patches are always welcome, but are not always applied as is. ...@@ -22,163 +22,154 @@ Of course, patches are always welcome, but are not always applied as is.
See also <a href="build.html#providing_patches">Providing Patches</a>. See also <a href="build.html#providing_patches">Providing Patches</a>.
</p> </p>
<h2>Version 1.2</h2>
<ul><li>Enable the system property h2.optimizeInList by default.
</li><li>Enable the system property h2.nullConcatIsNull by default.
</li><li>Enable the system property h2.pageStore by default.
</li></ul>
<h2>Priority 1</h2> <h2>Priority 1</h2>
<ul> <ul><li>Bugfixes
<li>Bugfixes </li><li>Use the transaction log for rollback.
</li><li>Issues 161, 157: Support large inserts and updates (use the transaction log for rollback).
Problems: Session.commit (rows), cache, undoLog.
</li><li>More tests with MULTI_THREADED=1 </li><li>More tests with MULTI_THREADED=1
</li><li>Optimization: result set caching (like MySQL); option to disable </li><li>Optimization: result set caching (like MySQL); option to disable
</li><li>Server side cursors </li><li>Server side cursors
</li></ul> </li></ul>
<h2>Priority 2</h2> <h2>Priority 2</h2>
<ul> <ul><li>Improve test code coverage
<li>Improve test code coverage
</li><li>Test multi-threaded in-memory db access </li><li>Test multi-threaded in-memory db access
</li><li>MVCC: select for update should only lock the selected rows. </li><li>MVCC: select for update should only lock the selected rows.
</li><li>Option to shutdown all the running servers (on the same VM). </li><li>Option to shutdown all the running servers (on the same VM).
</li><li>Full outer joins </li><li>Full outer joins.
</li><li>Support mixed clustering mode (one embedded, others in server mode) </li><li>Support mixed clustering mode (one embedded, others in server mode).
</li><li>PostgreSQL catalog: use BEFORE SELECT triggers instead of views over metadata tables. </li><li>PostgreSQL catalog: use BEFORE SELECT triggers instead of views over metadata tables.
</li><li>Test very large databases and LOBs (up to 256 GB) </li><li>Test very large databases and LOBs (up to 256 GB).
</li><li>Support hints for the optimizer (which index to use, enforce the join order). </li><li>Support hints for the optimizer (which index to use, enforce the join order).
</li><li>Change LOB mechanism (less files, keep index of lob files, point to files and row, delete unused files earlier, maybe bundle files into a tar file) </li><li>Change LOB mechanism (less files, keep index of lob files, point to files and row, delete unused files earlier, maybe bundle files into a tar file).
</li><li>Clustering: recovery needs to becomes fully automatic. Global write lock feature. </li><li>Clustering: recovery needs to becomes fully automatic. Global write lock feature.
</li><li>Clustering: reads should be randomly distributed (optional) or to a designated database on RAM (parameter: READ_FROM=3) </li><li>Clustering: reads should be randomly distributed (optional) or to a designated database on RAM (parameter: READ_FROM=3).
</li><li>Sequence: add features [NO] MINVALUE, MAXVALUE, CYCLE </li><li>Sequence: add features [NO] MINVALUE, MAXVALUE, CYCLE.
</li><li>Deferred integrity checking (DEFERRABLE INITIALLY DEFERRED) </li><li>Deferred integrity checking (DEFERRABLE INITIALLY DEFERRED).
</li><li>Groovy Stored Procedures (http://groovy.codehaus.org/Groovy+SQL) </li><li>Groovy Stored Procedures: http://groovy.codehaus.org/Groovy+SQL
</li><li>Add a migration guide (list differences between databases) </li><li>Add a migration guide (list differences between databases).
</li><li>Migrate database tool (also from other database engines) </li><li>Migrate database tool (also from other database engines).
</li><li>Automatic collection of statistics (auto ANALYZE; AUTOVACUUM). See http://www.postgresql.org/docs/current/static/routine-vacuuming.html#AUTOVACUUM </li><li>Automatic collection of statistics (auto ANALYZE; AUTOVACUUM). See http://www.postgresql.org/docs/current/static/routine-vacuuming.html#AUTOVACUUM
</li><li>Optimization: automatic index creation suggestion using the trace file? </li><li>Optimization: automatic index creation suggestion using the trace file?
</li><li>Compression performance: don't allocate buffers, compress / expand in to out buffer </li><li>Compression performance: don't allocate buffers, compress / expand in to out buffer.
</li><li>Rebuild index functionality to shrink index size and improve performance </li><li>Rebuild index functionality to shrink index size and improve performance.
</li><li>Don't use deleteOnExit (bug 4513817: File.deleteOnExit consumes memory) </li><li>Don't use deleteOnExit (bug 4513817: File.deleteOnExit consumes memory).
</li><li>Console: add accesskey to most important commands (A, AREA, BUTTON, INPUT, LABEL, LEGEND, TEXTAREA) </li><li>Console: add accesskey to most important commands (A, AREA, BUTTON, INPUT, LABEL, LEGEND, TEXTAREA).
</li><li>Support nested outer joins (see todo.txt). </li><li>Support nested outer joins (see todo.txt).
</li><li>Test performance again with SQL Server, Oracle, DB2 </li><li>Test performance again with SQL Server, Oracle, DB2.
</li><li>Test with dbmonster (http://dbmonster.kernelpanic.pl/) </li><li>Test with dbmonster: http://dbmonster.kernelpanic.pl
</li><li>Test with dbcopy (http://dbcopyplugin.sourceforge.net) </li><li>Test with dbcopy: http://dbcopyplugin.sourceforge.net
</li><li>Test with Spatial DB in a box / JTS: http://www.opengeospatial.org/standards/sfs - OpenGIS Implementation Specification </li><li>Test with Spatial DB in a box / JTS: http://www.opengeospatial.org/standards/sfs - OpenGIS Implementation Specification.
</li><li>Write more tests and documentation for MVCC (Multi Version Concurrency Control) </li><li>Write more tests and documentation for MVCC (Multi Version Concurrency Control).
</li><li>Find a tool to view large text file (larger than 100 MB), with find, page up and down (like less), truncate before / after </li><li>Find a tool to view large text file (larger than 100 MB), with find, page up and down (like less), truncate before / after.
</li><li>Implement, test, document XAConnection and so on </li><li>Implement, test, document XAConnection and so on.
</li><li>Pluggable data type (for streaming, hashing, compression, validation, conversion, encryption) </li><li>Pluggable data type (for streaming, hashing, compression, validation, conversion, encryption).
</li><li>CHECK: find out what makes CHECK=TRUE slow, move to CHECK2 </li><li>CHECK: find out what makes CHECK=TRUE slow, move to CHECK2.
</li><li>Index usage for (ID, NAME)=(1, 'Hi'); document </li><li>Index usage for (ID, NAME)=(1, 'Hi'); document.
</li><li>Make DDL (Data Definition) operations transactional </li><li>Make DDL (Data Definition) operations transactional.
</li><li>RANK() and DENSE_RANK(), Partition using OVER() </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>Set a connection read only (Connection.setReadOnly) or using a connection parameter.
</li><li>Optimizer: use an index for IS NULL and IS NOT NULL (including linked tables). </li><li>Optimizer: use an index for IS NULL and IS NOT NULL (including linked tables).
ID IS NOT NULL could be converted to ID &gt;= Integer.MIN_VALUE. ID IS NOT NULL could be converted to ID &gt;= Integer.MIN_VALUE.
</li><li>Access rights: remember the owner of an object. COMMENT: allow owner of object to change it. </li><li>Access rights: remember the owner of an object. COMMENT: allow owner of object to change it.
</li><li>Access rights: finer grained access control (grant access for specific functions) </li><li>Access rights: finer grained access control (grant access for specific functions).
</li><li>Suggestion: include Jetty as Servlet Container (like LAMP) </li><li>Suggestion: include Jetty as Servlet Container (like LAMP).
</li><li>Trace shipping to server </li><li>Trace shipping to server.
</li><li>Version check: docs / web console (using Javascript), and maybe in the library (using TCP/IP) </li><li>Version check: docs / web console (using Javascript), and maybe in the library (using TCP/IP).
</li><li>Web server classloader: override findResource / getResourceFrom </li><li>Web server classloader: override findResource / getResourceFrom.
</li><li>Cost for embedded temporary view is calculated wrong, if result is constant </li><li>Cost for embedded temporary view is calculated wrong, if result is constant.
</li><li>Comparison: pluggable sort order: natural sort </li><li>Comparison: pluggable sort order: natural sort.
</li><li>Count index range query (count(*) where id between 10 and 20) </li><li>Count index range query (count(*) where id between 10 and 20).
</li><li>Performance: update in-place </li><li>Performance: update in-place.
</li><li>Recursive Queries (see details) </li><li>Recursive Queries (see details).
</li><li>Eclipse plugin </li><li>Eclipse plugin.
</li><li>Asynchronous queries to support publish/subscribe: SELECT ... FOR READ WAIT [maxMillisToWait] </li><li>Asynchronous queries to support publish/subscribe: SELECT ... FOR READ WAIT [maxMillisToWait].
</li><li>Fulltext search Lucene: analyzer configuration. </li><li>Fulltext search Lucene: analyzer configuration.
</li><li>Fulltext search (native): reader / tokenizer / filter. </li><li>Fulltext search (native): reader / tokenizer / filter.
</li><li>Linked schema using CSV files: one schema for a directory of files; support indexes for CSV files </li><li>Linked schema using CSV files: one schema for a directory of files; support indexes for CSV files.
</li><li>iReport to support H2 </li><li>iReport to support H2.
</li><li>Implement missing JDBC API (CallableStatement,...) </li><li>Implement missing JDBC API (CallableStatement,...).
</li><li>Compression of the cache </li><li>Compression of the cache.
</li><li>Include SMPT (mail) server (at least client) (alert on cluster failure, low disk space,...) </li><li>Include SMPT (mail) server (at least client) (alert on cluster failure, low disk space,...).
</li><li>Drop with restrict (currently cascade is the default) </li><li>Drop with restrict (currently cascade is the default).
</li><li>JSON parser and functions </li><li>JSON parser and functions.
</li><li>Server: client ping from time to time (to avoid timeout - is timeout a problem?) </li><li>Server: client ping from time to time (to avoid timeout - is timeout a problem?).
</li><li>Copy database: tool with config GUI and batch mode, extensible (example: compare) </li><li>Copy database: tool with config GUI and batch mode, extensible (example: compare).
</li><li>Document, implement tool for long running transactions using user-defined compensation statements. </li><li>Document, implement tool for long running transactions using user-defined compensation statements.
</li><li>Support SET TABLE DUAL READONLY </li><li>Support SET TABLE DUAL READONLY.
</li><li>GCJ: what is the state now? </li><li>GCJ: what is the state now?
</li><li>Events for: database Startup, Connections, Login attempts, Disconnections, Prepare (after parsing), Web Server (see http://docs.openlinksw.com/virtuoso/fn_dbev_startup.html) </li><li>Events for: database Startup, Connections, Login attempts, Disconnections, Prepare (after parsing), Web Server. See http://docs.openlinksw.com/virtuoso/fn_dbev_startup.html
</li><li>Optimization: log compression </li><li>Optimization: log compression.
</li><li>ROW_NUMBER() OVER([ORDER BY columnName]) </li><li>ROW_NUMBER() OVER([ORDER BY columnName]).
</li><li>Support standard INFORMATION_SCHEMA tables, as defined in http://www.contrib.andrew.cmu.edu/~shadow/sql/sql1992.txt; specially KEY_COLUMN_USAGE (http://dev.mysql.com/doc/refman/5.0/en/information-schema.html, http://www.xcdsql.org/Misc/INFORMATION_SCHEMA%20With%20Rolenames.gif) </li><li>Support standard INFORMATION_SCHEMA tables, as defined in http://www.contrib.andrew.cmu.edu/~shadow/sql/sql1992.txt - specially KEY_COLUMN_USAGE: http://dev.mysql.com/doc/refman/5.0/en/information-schema.html, http://www.xcdsql.org/Misc/INFORMATION_SCHEMA%20With%20Rolenames.gif
</li><li>Compatibility: in MySQL, HSQLDB, /0.0 is NULL; in PostgreSQL, Derby: division by zero </li><li>Compatibility: in MySQL, HSQLDB, /0.0 is NULL; in PostgreSQL, Derby: division by zero.
</li><li>Functional tables should accept parameters from other tables (see FunctionMultiReturn) SELECT * FROM TEST T, P2C(T.A, T.R) </li><li>Functional tables should accept parameters from other tables (see FunctionMultiReturn) SELECT * FROM TEST T, P2C(T.A, T.R).
</li><li>Custom class loader to reload functions on demand </li><li>Custom class loader to reload functions on demand.
</li><li>Test http://mysql-je.sourceforge.net/ </li><li>Test http://mysql-je.sourceforge.net/
</li><li>Close all files when closing the database (including LOB files that are open on the client side) </li><li>Close all files when closing the database (including LOB files that are open on the client side).
</li><li>EXE file: maybe use http://jsmooth.sourceforge.net </li><li>EXE file: maybe use http://jsmooth.sourceforge.net
</li><li>Performance: automatically build in-memory indexes if the whole table is in memory </li><li>Performance: automatically build in-memory indexes if the whole table is in memory.
</li><li>H2 Console: the webclient could support more features like phpMyAdmin. </li><li>H2 Console: the webclient could support more features like phpMyAdmin.
</li><li>Use Janino to convert Java to C++ </li><li>Use Janino to convert Java to C++.
</li><li>The HELP information schema can be directly exposed in the Console </li><li>The HELP information schema can be directly exposed in the Console.
</li><li>Maybe use the 0x1234 notation for binary fields, see MS SQL Server </li><li>Maybe use the 0x1234 notation for binary fields, see MS SQL Server.
</li><li>Support Oracle CONNECT BY in some way: http://www.adp-gmbh.ch/ora/sql/connect_by.html, http://philip.greenspun.com/sql/trees.html </li><li>Support Oracle CONNECT BY in some way: http://www.adp-gmbh.ch/ora/sql/connect_by.html http://philip.greenspun.com/sql/trees.html
</li><li>SQL Server 2005, Oracle: support COUNT(*) OVER(). See http://www.orafusion.com/art_anlytc.htm </li><li>SQL Server 2005, Oracle: support COUNT(*) OVER(). See http://www.orafusion.com/art_anlytc.htm
</li><li>SQL 2003 (http://www.wiscorp.com/sql_2003_standard.zip) </li><li>SQL 2003: http://www.wiscorp.com/sql_2003_standard.zip
</li><li>Version column (number/sequence and timestamp based) </li><li>Version column (number/sequence and timestamp based).
</li><li>Optimize getGeneratedKey: send last identity after each execute (server). </li><li>Optimize getGeneratedKey: send last identity after each execute (server).
</li><li>Test and document UPDATE TEST SET (ID, NAME) = (SELECT ID*10, NAME || '!' FROM TEST T WHERE T.ID=TEST.ID); </li><li>Test and document UPDATE TEST SET (ID, NAME) = (SELECT ID*10, NAME || '!' FROM TEST T WHERE T.ID=TEST.ID).
</li><li>Max memory rows / max undo log size: use block count / row size not row count </li><li>Max memory rows / max undo log size: use block count / row size not row count.
</li><li>Support 123L syntax as in Java; example: SELECT (2000000000*2) </li><li>Support 123L syntax as in Java; example: SELECT (2000000000*2).
</li><li>Implement point-in-time recovery </li><li>Implement point-in-time recovery.
</li><li>LIKE: improved version for larger texts (currently using naive search) </li><li>LIKE: improved version for larger texts (currently using naive search).
</li><li>Automatically convert to the next 'higher' data type whenever there is an overflow. </li><li>Automatically convert to the next 'higher' data type whenever there is an overflow.
</li><li>Throw an exception when the application calls getInt on a Long (optional) </li><li>Throw an exception when the application calls getInt on a Long (optional).
</li><li>Default date format for input and output (local date constants) </li><li>Default date format for input and output (local date constants).
</li><li>Support custom Collators </li><li>Support custom Collators.
</li><li>Document ROWNUM usage for reports: SELECT ROWNUM, * FROM (subquery) </li><li>Document ROWNUM usage for reports: SELECT ROWNUM, * FROM (subquery).
</li><li>Clustering: when a database is back alive, automatically synchronize with the master </li><li>Clustering: when a database is back alive, automatically synchronize with the master.
</li><li>File system that writes to two file systems (replication, replicating file system) </li><li>File system that writes to two file systems (replication, replicating file system).
</li><li>Standalone tool to get relevant system properties and add it to the trace output. </li><li>Standalone tool to get relevant system properties and add it to the trace output.
</li><li>Support 'call proc(1=value)' (PostgreSQL, Oracle) </li><li>Support 'call proc(1=value)' (PostgreSQL, Oracle).
</li><li>JAMon (proxy jdbc driver) </li><li>JAMon (proxy jdbc driver).
</li><li>Console: improve editing data (Tab, Shift-Tab, Enter, Up, Down, Shift+Del?) </li><li>Console: improve editing data (Tab, Shift-Tab, Enter, Up, Down, Shift+Del?).
</li><li>Console: autocomplete Ctrl+Space inserts template </li><li>Console: autocomplete Ctrl+Space inserts template.
</li><li>Option to encrypt .trace.db file </li><li>Option to encrypt .trace.db file.
</li><li>Write Behind Cache on SATA leads to data corruption See also http://sr5tech.com/write_back_cache_experiments.htm and http://www.jasonbrome.com/blog/archives/2004/04/03/writecache_enabled.html </li><li>Write Behind Cache on SATA leads to data corruption See also http://sr5tech.com/write_back_cache_experiments.htm and http://www.jasonbrome.com/blog/archives/2004/04/03/writecache_enabled.html
</li><li>Functions with unknown return or parameter data types: serialize / deserialize </li><li>Functions with unknown return or parameter data types: serialize / deserialize.
</li><li>Test if idle TCP connections are closed, and how to disable that </li><li>Test if idle TCP connections are closed, and how to disable that.
</li><li>Try using a factory for Row, Value[] (faster?), http://javolution.org/, alternative ObjectArray / IntArray </li><li>Try using a factory for Row, Value[] (faster?), http://javolution.org/ (alternative ObjectArray / IntArray).
</li><li>Auto-Update feature for database, .jar file </li><li>Auto-Update feature for database, .jar file.
</li><li>ResultSet SimpleResultSet.readFromURL(String url): id varchar, state varchar, released timestamp </li><li>ResultSet SimpleResultSet.readFromURL(String url): id varchar, state varchar, released timestamp.
</li><li>Partial indexing (see PostgreSQL) </li><li>Partial indexing (see PostgreSQL).
</li><li>Add GUI to build a custom version (embedded, fulltext,...) using build flags </li><li>Add GUI to build a custom version (embedded, fulltext,...) using build flags.
</li><li>http://rubyforge.org/projects/hypersonic/ </li><li>http://rubyforge.org/projects/hypersonic/
</li><li>Add comparator (x === y) : (x = y or (x is null and y is null)) </li><li>Add comparator (x === y) : (x = y or (x is null and y is null)).
</li><li>Try to create trace file even for read only databases </li><li>Try to create trace file even for read only databases.
</li><li>Add a sample application that runs the H2 unit test and writes the result to a file (so it can be included in the user app) </li><li>Add a sample application that runs the H2 unit test and writes the result to a file (so it can be included in the user app).
</li><li>Count on a column that can not be null could be optimized to COUNT(*) </li><li>Count on a column that can not be null could be optimized to COUNT(*).
</li><li>Table order: ALTER TABLE TEST ORDER BY NAME DESC (MySQL compatibility) </li><li>Table order: ALTER TABLE TEST ORDER BY NAME DESC (MySQL compatibility).
</li><li>Issue 159: System property for the H2 Console and TCP configuration (which .h2.server.properties and .h2.keystore to use) </li><li>Issue 159: System property for the H2 Console and TCP configuration (which .h2.server.properties and .h2.keystore to use).
</li><li>Backup tool should work with other databases as well </li><li>Backup tool should work with other databases as well.
</li><li>Console: -ifExists doesn't work for the console. Add a flag to disable other dbs </li><li>Console: -ifExists doesn't work for the console. Add a flag to disable other dbs.
</li><li>Check if 'FSUTIL behavior set disablelastaccess 1' improves the performance (fsutil behavior query disablelastaccess) </li><li>Check if 'FSUTIL behavior set disablelastaccess 1' improves the performance (fsutil behavior query disablelastaccess).
</li><li>Java static code analysis: http://pmd.sourceforge.net/ </li><li>Java static code analysis: http://pmd.sourceforge.net/
</li><li>Java static code analysis: http://www.eclipse.org/tptp/ </li><li>Java static code analysis: http://www.eclipse.org/tptp/
</li><li>Compatibility for CREATE SCHEMA AUTHORIZATION </li><li>Compatibility for CREATE SCHEMA AUTHORIZATION.
</li><li>Implement Clob / Blob truncate and the remaining functionality </li><li>Implement Clob / Blob truncate and the remaining functionality.
</li><li>Maybe close LOBs after closing connection </li><li>Maybe close LOBs after closing connection.
</li><li>Tree join functionality </li><li>Tree join functionality.
</li><li>Add multiple columns at the same time with ALTER TABLE .. ADD .. ADD .. </li><li>Add multiple columns at the same time with ALTER TABLE .. ADD .. ADD ...
</li><li>Add H2 to Gem (Ruby install system) </li><li>Add H2 to Gem (Ruby install system).
</li><li>API for functions / user tables </li><li>API for functions / user tables.
</li><li>Order conditions inside AND / OR to optimize the performance </li><li>Order conditions inside AND / OR to optimize the performance.
</li><li>Support Oracle functions: TRUNC, NVL2, TO_CHAR, TO_DATE, TO_NUMBER </li><li>Support Oracle functions: TRUNC, NVL2, TO_CHAR, TO_DATE, TO_NUMBER.
</li><li>Support linked JCR tables </li><li>Support linked JCR tables
</li><li>Make sure H2 is supported by Execute Query: http://executequery.org/ </li><li>Make sure H2 is supported by Execute Query: http://executequery.org/
</li><li>Read InputStream when executing, as late as possible (maybe only embedded mode). Problem with re-execute. </li><li>Read InputStream when executing, as late as possible (maybe only embedded mode). Problem with re-execute.
</li><li>Native fulltext search: min word length; store word positions </li><li>Native fulltext search: min word length; store word positions
</li><li>Add an option to the SCRIPT command to generate only portable / standard SQL </li><li>Add an option to the SCRIPT command to generate only portable / standard SQL
</li><li>Test Dezign for Databases (http://www.datanamic.com) </li><li>Test Dezign for Databases: http://www.datanamic.com
</li><li>Fast library for parsing / formatting: http://javolution.org/ </li><li>Fast library for parsing / formatting: http://javolution.org/
</li><li>Updatable Views (simple cases first) </li><li>Updatable Views (simple cases first)
</li><li>Improve create index performance </li><li>Improve create index performance
...@@ -248,7 +239,7 @@ See also <a href="build.html#providing_patches">Providing Patches</a>. ...@@ -248,7 +239,7 @@ See also <a href="build.html#providing_patches">Providing Patches</a>.
</li><li>Server: use one listener (detect if the request comes from an PG or TCP client) </li><li>Server: use one listener (detect if the request comes from an PG or TCP client)
</li><li>Support data type INTERVAL </li><li>Support data type INTERVAL
</li><li>Optimize SELECT MIN(ID), MAX(ID), COUNT(*) FROM TEST WHERE ID BETWEEN 100 AND 200 </li><li>Optimize SELECT MIN(ID), MAX(ID), COUNT(*) FROM TEST WHERE ID BETWEEN 100 AND 200
</li><li>Sequence: PostgreSQL compatibility (rename, create) (http://www.postgresql.org/docs/8.2/static/sql-altersequence.html) </li><li>Sequence: PostgreSQL compatibility (rename, create) http://www.postgresql.org/docs/8.2/static/sql-altersequence.html
</li><li>DISTINCT: support large result sets by sorting on all columns (additionally) and then removing duplicates. </li><li>DISTINCT: support large result sets by sorting on all columns (additionally) and then removing duplicates.
</li><li>File system with a background writer thread; test if this is faster </li><li>File system with a background writer thread; test if this is faster
</li><li>Better document the source code </li><li>Better document the source code
...@@ -338,7 +329,6 @@ See also <a href="build.html#providing_patches">Providing Patches</a>. ...@@ -338,7 +329,6 @@ See also <a href="build.html#providing_patches">Providing Patches</a>.
</li><li>Support DatabaseMetaData.insertsAreDetected: updatable result sets should detect inserts. </li><li>Support DatabaseMetaData.insertsAreDetected: updatable result sets should detect inserts.
</li><li>Auto-server: add option to define the IP address range or list. </li><li>Auto-server: add option to define the IP address range or list.
</li><li>Index creation using deterministic functions. </li><li>Index creation using deterministic functions.
</li><li>Use http://recaptcha.net somehow to secure the Google Group.
</li><li>Support DELETE with TOP or LIMIT. See also: http://dev.mysql.com/doc/refman/5.1/de/delete.html </li><li>Support DELETE with TOP or LIMIT. See also: http://dev.mysql.com/doc/refman/5.1/de/delete.html
</li><li>ANALYZE: use a bloom filter for each indexed column to estimate count of distinct values. </li><li>ANALYZE: use a bloom filter for each indexed column to estimate count of distinct values.
</li><li>ANALYZE: for unique indexes that allow null, count the number of null. </li><li>ANALYZE: for unique indexes that allow null, count the number of null.
......
h2/src/test/org/h2/test/todo/tools.sql
浏览文件 @ fa002664
...@@ -7,8 +7,8 @@ ...@@ -7,8 +7,8 @@
-- TO_DATE -- TO_DATE
create alias TO_DATE as $$ create alias TO_DATE as $$
java.util.Date toDate(String s) throws Exception { java.util.Date toDate(String s) throws Exception {
return new java.text.SimpleDateFormat("yyyy.MM.dd").parse(s); return new java.text.SimpleDateFormat("yyyy.MM.dd").parse(s);
} }
$$; $$;
call TO_DATE('1990.02.03') call TO_DATE('1990.02.03')
......
h2/src/tools/org/h2/build/doc/dictionary.txt
浏览文件 @ fa002664
...@@ -635,3 +635,4 @@ explicitconstructorcall switchstatements members parens alignment declarations ...@@ -635,3 +635,4 @@ explicitconstructorcall switchstatements members parens alignment declarations
jdt continuation codegen parenthesized tabulation ellipsis imple inits guardian jdt continuation codegen parenthesized tabulation ellipsis imple inits guardian
postfix iconified deiconified deactivated activated worker frequent utilities postfix iconified deiconified deactivated activated worker frequent utilities
workers appender recovers balanced serializing breaking austria wildam workers appender recovers balanced serializing breaking austria wildam
census genealogy scapegoat gov
\ No newline at end of file
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