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Comment:Update the change log and pragma documentation for 3.7.16.
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SHA1: ba9b0b1040507201bca33cfa5b5875834bbc04fb
User & Date: drh 2013-02-15 15:18:12.615
Context
2013-02-25
14:52
Add documentation for the unicode() and char() functions. (check-in: 0b81bc6851 user: drh tags: trunk)
2013-02-15
15:18
Update the change log and pragma documentation for 3.7.16. (check-in: ba9b0b1040 user: drh tags: trunk)
00:48
Begin making documentation changes for the 3.7.16 release. (check-in: 685a544f00 user: drh tags: trunk)
Changes
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Changes to pages/changes.in.
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    the REGEXP operator.
<li>Improved error messages in the [RTREE] extension.
<li>Enhance the [command-line shell] so that a non-zero argument to the
    ".exit" command causes the shell to exist immediately without cleanly
    shutting down the database connection.
<li>Improved error messages for invalid boolean arguments to dot-commands
    in the [command-line shell].


<li>Remove all uses of umask() in the unix VFS.
<li>Added the [PRAGMA vdbe_debug] command.

<li>Bug fix: Issue an error message if the 16-bit reference counter on a
    view overflows due to an overly complex query.
<li>Bug fix: Avoid leaking memory on LIMIT and OFFSET clauses in deeply
    nested UNION ALL queries.
<li>Bug fix: Make sure the schema is up-to-date prior to running pragmas
    table_info, index_list, index_info, and foreign_key_list.








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    the REGEXP operator.
<li>Improved error messages in the [RTREE] extension.
<li>Enhance the [command-line shell] so that a non-zero argument to the
    ".exit" command causes the shell to exist immediately without cleanly
    shutting down the database connection.
<li>Improved error messages for invalid boolean arguments to dot-commands
    in the [command-line shell].
<li>Improved error messages for "foreign key mismatch" showing the names of
    the two tables involved.
<li>Remove all uses of umask() in the unix VFS.
<li>Added the [PRAGMA vdbe_addoptrace] and [PRAGMA vdbe_debug] commands.

<li>Bug fix: Issue an error message if the 16-bit reference counter on a
    view overflows due to an overly complex query.
<li>Bug fix: Avoid leaking memory on LIMIT and OFFSET clauses in deeply
    nested UNION ALL queries.
<li>Bug fix: Make sure the schema is up-to-date prior to running pragmas
    table_info, index_list, index_info, and foreign_key_list.
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Changes to pages/pragma.in.
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DebugPragma vdbe_debug {
    <p><b>PRAGMA vdbe_debug = </b><i>boolean</i><b>;</b></p>

    DISCLAIMER

    <p>If SQLite has been compiled with the [SQLITE_DEBUG] compile-time
    option, then the vdbe_debug pragma can be used to cause a complete
    listing of the virtual machine opcodes to appear on standard output
    as each statement is evaluated, and to cause each to cause virtual





    machine opcodes to be printed on standard output as they are evaluated.

    (In other words, vdbe_debug is a combination of vdbe_listing and

    vdbe_trace.)  In addition, the vdbe_debug pragma also enables tracing
    of calls to sqlite3VdbeAddOp() during code generation.
    This feature is used for debugging SQLite itself.  See the 
    <a href="vdbe.html#trace">VDBE documentation</a> for more 
    information.</p>
}

Pragma wal_checkpoint {
    <p><b>PRAGMA </b><i>database</i><b>.wal_checkpoint;</b><br>








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DebugPragma vdbe_debug {
    <p><b>PRAGMA vdbe_debug = </b><i>boolean</i><b>;</b></p>

    DISCLAIMER

    <p>If SQLite has been compiled with the [SQLITE_DEBUG] compile-time
    option, then the vdbe_debug pragma is a shorthand for three other
    debug-only pragmas: vdbe_addoptrace, vdbe_listing, and vdbe_trace.
    This feature is used for debugging SQLite itself.  See the 
    <a href="vdbe.html#trace">VDBE documentation</a> for more 
    information.</p>
}
DebugPragma vdbe_addoptrace {
    <p><b>PRAGMA vdbe_addoptrace = </b><i>boolean</i><b>;</b></p>

    DISCLAIMER

    <p>If SQLite has been compiled with the [SQLITE_DEBUG] compile-time
    option, then the vdbe_addoptrace pragma can be used to cause a complete
    VDBE opcodes to be displayed as they are created during code generation.
    This feature is used for debugging SQLite itself.  See the 
    <a href="vdbe.html#trace">VDBE documentation</a> for more 
    information.</p>
}

Pragma wal_checkpoint {
    <p><b>PRAGMA </b><i>database</i><b>.wal_checkpoint;</b><br>
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