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Overview
Comment:Update the date and time function documentation to guarantee that 'now' is stable within a single sqlite3_step() call.
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SHA1: a2842a55e902c16a8784eefecbe3e6e7b903e81b
User & Date: drh 2013-09-16 13:32:19.325
Context
2013-09-18
11:31
Add examples of creating fts3tokenize tables that use tokenizers declared with multiple arguments to fts3.in. (check-in: 23c364befb user: dan tags: trunk)
2013-09-16
13:32
Update the date and time function documentation to guarantee that 'now' is stable within a single sqlite3_step() call. (check-in: a2842a55e9 user: drh tags: trunk)
2013-09-14
16:09
Merge the 3.8.0 branch changes into trunk. (check-in: 18c0f01b0c user: drh tags: trunk)
Changes
Unified Diff Ignore Whitespace Patch
Changes to pages/changes.in.
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    as hints to the query planner.
<li>Added the [soft_heap_limit pragma].
<li>Tweaked the query planner to take into account WHERE clause terms
    that cannot be used with indices.
<li>Added support for SQLITE_ENABLE_STAT4
<li>Added the [SQLITE_MINIMUM_FILE_DESCRIPTOR] compile-time option
<li>Added the win32-longpath VFS on windows.



}

chng {2013-09-03 (3.8.0.2)} {
<li>Fix a bug in the optimization that attempts to omit unused LEFT JOINs

<li>SQLITE_SOURCE_ID: 
    "2013-09-03 17:11:13 7dd4968f235d6e1ca9547cda9cf3bd570e1609ef"








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    as hints to the query planner.
<li>Added the [soft_heap_limit pragma].
<li>Tweaked the query planner to take into account WHERE clause terms
    that cannot be used with indices.
<li>Added support for SQLITE_ENABLE_STAT4
<li>Added the [SQLITE_MINIMUM_FILE_DESCRIPTOR] compile-time option
<li>Added the win32-longpath VFS on windows.
<li>The [Date And Time Functions] are enhanced so that the current time
    (ex: julianday('now')) is always the same for multiple function invocations
    within the same [sqlite3_step()] call.
}

chng {2013-09-03 (3.8.0.2)} {
<li>Fix a bug in the optimization that attempts to omit unused LEFT JOINs

<li>SQLITE_SOURCE_ID: 
    "2013-09-03 17:11:13 7dd4968f235d6e1ca9547cda9cf3bd570e1609ef"
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Changes to pages/lang.in.
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^In formats 5 through 7, the "T" is a literal character separating 
the date and the time, as required by 
[http://www.w3c.org/TR/NOTE-datetime | ISO-8601]. 
^Formats 8 through 10 that specify only a time assume a date of 
2000-01-01. Format 11, the string 'now', is converted into the 
current date and time as obtained from the xCurrentTime method
of the [sqlite3_vfs] object in use.


^[http://en.wikipedia.org/wiki/Coordinated_Universal_Time | Universal Coordinated Time (UTC)] is used. 
^Format 12 is the 
[http://en.wikipedia.org/wiki/Julian_day | Julian day number]
expressed as a floating point value.
</p>

<p>








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^In formats 5 through 7, the "T" is a literal character separating 
the date and the time, as required by 
[http://www.w3c.org/TR/NOTE-datetime | ISO-8601]. 
^Formats 8 through 10 that specify only a time assume a date of 
2000-01-01. Format 11, the string 'now', is converted into the 
current date and time as obtained from the xCurrentTime method
of the [sqlite3_vfs] object in use.
^The 'now' argument to date and time functions always returns exactly the
same value for multiple invocations within the same [sqlite3_step()] call.
^[http://en.wikipedia.org/wiki/Coordinated_Universal_Time | Universal Coordinated Time (UTC)] is used. 
^Format 12 is the 
[http://en.wikipedia.org/wiki/Julian_day | Julian day number]
expressed as a floating point value.
</p>

<p>
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