Documentation Source Text: Check-in [2ff6a32555]

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Overview

Comment:	Fix an error in an example in the FTS5 documentation.
Timelines:	family \| ancestors \| descendants \| both \| trunk
Files:	files \| file ages \| folders
SHA1:	2ff6a32555f6e1a3d6f5e92c7399419b282d2130
User & Date:	dan 2015-08-20 05:47:33

Context

2015-08-20
08:58		Fix an error in the previous commit. check-in: 3c56514778 user: dan tags: trunk
05:47		Fix an error in an example in the FTS5 documentation. check-in: 2ff6a32555 user: dan tags: trunk
2015-08-19
13:55		Fix the argvIndex description in the virtual table documentation. check-in: 26089f7cd9 user: drh tags: trunk

Changes

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Changes to pages/fts5.in.

  CREATE VIRTUAL TABLE ft USING fts5(a, b);
  INSERT INTO ft(rowid, a, b) VALUES(1, 'X Y', 'Y Z');
  INSERT INTO ft(rowid, a, b) VALUES(2, 'A Z', 'Y Y');

  <i>-- The FTS5 module creates the following mapping on disk:</i>
  A --&gt; (2, 0, 0)
  X --&gt; (1, 0, 0)
  Y --&gt; (1, 1, 0) (2, 1, 0) (2, 1, 1)
  Z --&gt; (2, 1, 1) (1, 1, 1)
</codeblock>

<p>In the example above, each triple identifies the location of a token
instance by rowid, column number (columns are numbered sequentially
starting at 0 from left to right) and position within the column value (the
first token in a column value is 0, the second is 1, and so on). Using this
index, FTS5 is able to provide timely answers to queries such as "the set

|
|

  CREATE VIRTUAL TABLE ft USING fts5(a, b);
  INSERT INTO ft(rowid, a, b) VALUES(1, 'X Y', 'Y Z');
  INSERT INTO ft(rowid, a, b) VALUES(2, 'A Z', 'Y Y');

  <i>-- The FTS5 module creates the following mapping on disk:</i>
  A --&gt; (2, 0, 0)
  X --&gt; (1, 0, 0)
  Y --&gt; (1, 0, 1) (1, 1, 0) (2, 1, 0) (2, 1, 1)
  Z --&gt; (1, 2, 1) (2, 0, 1)
</codeblock>

<p>In the example above, each triple identifies the location of a token
instance by rowid, column number (columns are numbered sequentially
starting at 0 from left to right) and position within the column value (the
first token in a column value is 0, the second is 1, and so on). Using this
index, FTS5 is able to provide timely answers to queries such as "the set