Documentation Source Text

chng {2018-02-00 (3.22.0)} {
<li> The output of [sqlite3_trace_v2()] now shows each individual SQL statements
     run within a trigger.
<li> Add the ability to read from [WAL mode] databases even if the application 
     lacks write permission on the database and its containing directory, as long as
     the -shm and -wal files exist in that directory.
<li> Added the [rtreecheck()] scalar SQL function to the [R-Tree extension].

<li> New extensions:
<ol type='a'>
  <li> The [Zipfile virtual table] can read and write a 
       [https://en.wikipedia.org/wiki/Zip_(file_format)|ZIP Archive].
  <li> Added the fsdir(PATH) [table-valued function] to the
       [https://sqlite.org/src/file/ext/misc/fileio.c|fileio.c] extension,
       for listing the files in a directory.

chng {2018-02-00 (3.22.0)} {
<li> The output of [sqlite3_trace_v2()] now shows each individual SQL statements
     run within a trigger.
<li> Add the ability to read from [WAL mode] databases even if the application 
     lacks write permission on the database and its containing directory, as long as
     the -shm and -wal files exist in that directory.
<li> Added the [rtreecheck()] scalar SQL function to the [R-Tree extension].
<li> Added support for the [FTS5 initial token|"&#94;" initial token syntax] in FTS5.
<li> New extensions:
<ol type='a'>
  <li> The [Zipfile virtual table] can read and write a 
       [https://en.wikipedia.org/wiki/Zip_(file_format)|ZIP Archive].
  <li> Added the fsdir(PATH) [table-valued function] to the
       [https://sqlite.org/src/file/ext/misc/fileio.c|fileio.c] extension,
       for listing the files in a directory.

<p>The final query in the block above may not work as expected. Because the
"*" character is inside the double-quotes, it will be passed to the tokenizer,
which will likely discard it (or perhaps, depending on the specific tokenizer
in use, include it as part of the final token) instead of recognizing it as
a special FTS character.


<h2 tags="FTS5 initial token queries">FTS5 Initial Token Queries</h2>
<p>
If a "&#94;" character appears immediately before a phrase that is not part of a
NEAR query, then that phrase only matches a document only if it starts at the
first token in a column. The "&#94;" syntax may be combined with a 
[FTS5 column filters|column filter], but may not be inserted into the middle of
a phrase.

<p>The final query in the block above may not work as expected. Because the
"*" character is inside the double-quotes, it will be passed to the tokenizer,
which will likely discard it (or perhaps, depending on the specific tokenizer
in use, include it as part of the final token) instead of recognizing it as
a special FTS character.

<tcl>hd_fragment carrotq {FTS5 initial token}</tcl>
<h2 tags="FTS5 initial token queries">FTS5 Initial Token Queries</h2>
<p>
If a "&#94;" character appears immediately before a phrase that is not part of a
NEAR query, then that phrase only matches a document only if it starts at the
first token in a column. The "&#94;" syntax may be combined with a 
[FTS5 column filters|column filter], but may not be inserted into the middle of
a phrase.