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<A NAME="E9E17"></A>
<H1>
<FONT FACE="Arial"><B>APPENDIX H NEW FEATURES IN VERSION 2.2</B></FONT></H1>
<BR>
<A NAME="E10E116"></A>
<P>
<FONT FACE="Arial"><B>Functional Enchangements</B></FONT>
<BLOCKQUOTE>
<H4>
<FONT FACE="Arial"><B>Log Manager</B></FONT></H4>
</BLOCKQUOTE>
<BLOCKQUOTE>
<P>The log write mode in multithreaded environments has been improved. The following parameter has become obsolete:
</BLOCKQUOTE>
<BLOCKQUOTE>
<PRE>[Logging]
<BR>CommitMaxWait</PRE></BLOCKQUOTE>
<BLOCKQUOTE>
<P>The possible values of the LogWriteMode parameter in the [Logging] section are 0, 1, and 2.
</BLOCKQUOTE>
<BLOCKQUOTE>
<H4>
<FONT FACE="Arial"><B>ROWNUM pseudo column</B></FONT></H4>
</BLOCKQUOTE>
<BLOCKQUOTE>
<P>ROWNUM pseudo columns are supported.
</BLOCKQUOTE>
<BLOCKQUOTE>
<P>Notes on usage:
</BLOCKQUOTE>
<BLOCKQUOTE>
<P>1. The only meaningful use of ROWNUM in a where clause is
</BLOCKQUOTE>
<BLOCKQUOTE>
<PRE>… WHERE ROWNUM < constant</PRE></BLOCKQUOTE>
<BLOCKQUOTE>
<P>because the value of ROWNUM increases only when a row is retrieved.
</BLOCKQUOTE>
<BLOCKQUOTE>
<P>The following condition can never be met, because the first 4 rows are not
<BR>retrieved:
</BLOCKQUOTE>
<BLOCKQUOTE>
<PRE>… WHERE ROWNUM = 5</PRE></BLOCKQUOTE>
<BLOCKQUOTE>
<P>2. The following error message is issued if ROWNUM is used incorrectly:
</BLOCKQUOTE>
<BLOCKQUOTE>
<PRE>SQL Error 86 Illegal ROWNUM constraint</PRE></BLOCKQUOTE>
<BLOCKQUOTE>
<P>3. Views can be used to retrieve only the rows with the specified ROWNUMs from a query. For example, every other row from a table AA can be retrieved using the following view:
</BLOCKQUOTE>
<BLOCKQUOTE>
<PRE>create view aav as select rownum as rn , * from aa;
select * from aav where convert_integer(rn/2) * 2 = rn;</PRE></BLOCKQUOTE>
<BLOCKQUOTE>
<H4>
<FONT FACE="Arial"><B>SQL Statement Execution Timeout</B></FONT></H4>
</BLOCKQUOTE>
<BLOCKQUOTE>
<P>The new SQL statement
</BLOCKQUOTE>
<BLOCKQUOTE>
<PRE>SET STATEMENT MAXTIME integer</PRE></BLOCKQUOTE>
<BLOCKQUOTE>
<P>sets a connection-specific statement maximum execution time in minutes. This setting is effective until a new maximum time is given. The value 0 (which is also the default value) turns off the timeout. If the statement fails due to a timeout, the following error message is issued:
</BLOCKQUOTE>
<BLOCKQUOTE>
<PRE>Server Error 14529 The operation timed out</PRE></BLOCKQUOTE>
<BLOCKQUOTE>
<H4>
<FONT FACE="Arial"><B>UNIX Pipes Protocol</B></FONT></H4>
</BLOCKQUOTE>
<BLOCKQUOTE>
<P>The UNIX Pipes protocol is supported in SUN Solaris, SGI IRIX, Linux, HP-UX, and Intergraph CLIX environments. Refer to the chapter <I>Network </I><I>Connections</I> for more information.
</BLOCKQUOTE>
<BLOCKQUOTE>
<H4>
<FONT FACE="Arial"><B>SOLID </B><B><I>Server</I></B><B> Command Line Options</B></FONT></H4>
</BLOCKQUOTE>
<BLOCKQUOTE>
<P>Refer to <I>Appendix G SOLID Server Command Line Options</I> for a complete list of available options.
</BLOCKQUOTE>
<BLOCKQUOTE>
<H4>
<FONT FACE="Arial"><B>Schema Support</B></FONT></H4>
</BLOCKQUOTE>
<BLOCKQUOTE>
<P>SOLID <I>Server</I> supports SQL89 style schemas for database entity name qualifying. All created database entities belong to a schema, and different schemas may contain entities with same names. The default schema can be changed with the SET SCHEMA statement. Refer to <I>Appendix D SOLID SQL </I><I>Syntax</I> for more information.
</BLOCKQUOTE>
<BLOCKQUOTE>
<H4>
<FONT FACE="Arial"><B>Logical Data Source Names</B></FONT></H4>
</BLOCKQUOTE>
<BLOCKQUOTE>
<P>SOLID Clients support Logical Data Source Names. These names can be used to give a database a descriptive name. This name is mapped to a network name using either parameter settings in the clients solid.ini file or in Windows operating systems’ registry settings. This feature is available on all supported platforms. In addition, SOLID <I>Server </I>ODBC Driver supports Logical Data Source Names from version 2.2 forward.
</BLOCKQUOTE>
<BLOCKQUOTE>
<P>Refer to the chapter <I>Network Connections</I> for more information.
</BLOCKQUOTE>
<BLOCKQUOTE>
<H4>
<FONT FACE="Arial"><B>Stored Procedures</B></FONT></H4>
</BLOCKQUOTE>
<BLOCKQUOTE>
<P>Stored procedures can return multiple rows. Refer to <I>Appendix D SOLID </I><I>SQL Syntax</I> for more information.
</BLOCKQUOTE><P ALIGN=CENTER>
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