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Comment:Update the FAQ to explain how to enable large file support. (CVS 779)
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SHA1:4caf624e9061fe7489a8e3c6892975036a2272d5
User & Date: drh 2002-11-05 23:24:38
Context
2002-11-06
00:59
Changes to include files so that the >2GB file patch will compile under BSD. (CVS 780) check-in: 81bb1aed user: drh tags: trunk
2002-11-05
23:24
Update the FAQ to explain how to enable large file support. (CVS 779) check-in: 4caf624e user: drh tags: trunk
23:03
Add support for databases larger than 2GB under Unix. Must be compiled with -D_FILE_OFFSET_BITS=64 and -D_LARGEFILE_SOURCE in order to work with larger databases. (CVS 778) check-in: a3f67fe9 user: drh tags: trunk
Changes
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Changes to www/faq.tcl.

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#
# Run this script to generated a faq.html output file
#
set rcsid {$Id: faq.tcl,v 1.19 2002/08/24 18:24:57 drh Exp $}

puts {<html>
<head>
  <title>SQLite Frequently Asked Questions</title>
</head>
<body bgcolor="white">
<h1 align="center">Frequently Asked Questions</h1>
................................................................................
ORDER BY name
</pre></blockquote>
}

faq {
  Are there any known size limits to SQLite databases?
} {
  <p>Internally, SQLite can handle databases up to 2^40 bytes (1 terabyte)
  in size.  But the backend interface to POSIX and Win32 limits files to
  2^31 (2 gigabytes).</p>


  <p>SQLite arbitrarily limits the amount of data in one row to 1 megabyte.
  There is a single #define in the source code that can be changed to raise
  this limit as high as 16 megabytes if desired.</p>

  <p>There is a theoretical limit of about 2^32 (4 billion) rows
  in a single table, but there
................................................................................
  number of columns, etc.  Indices are similarly unconstrained.</p>

  <p>The names of tables, indices, view, triggers, and columns can be
  as long as desired.  However, the names of SQL functions (as created
  by the <a href="c_interface.html#cfunc">sqlite_create_function()</a> API)
  may not exceed 255 characters in length.</p>
}
















faq {
  What is the maximum size of a VARCHAR in SQLite?
} {
  <p>Remember, SQLite is typeless.  A VARCHAR column can hold as much
  data as any other column.  The total amount of data in a single row
  of the database is limited to 1 megabyte.  You can increase this limit



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#
# Run this script to generated a faq.html output file
#
set rcsid {$Id: faq.tcl,v 1.20 2002/11/05 23:24:38 drh Exp $}

puts {<html>
<head>
  <title>SQLite Frequently Asked Questions</title>
</head>
<body bgcolor="white">
<h1 align="center">Frequently Asked Questions</h1>
................................................................................
ORDER BY name
</pre></blockquote>
}

faq {
  Are there any known size limits to SQLite databases?
} {
  <p>Internally, SQLite can handle databases up to 2^41 bytes (2 terabytes)
  in size.  But the backend interface to POSIX and Win32 limits files to
  2^31 (2 gigabytes).  (See the next question for instructions on how
  to relax this limit under POSIX.)</p>

  <p>SQLite arbitrarily limits the amount of data in one row to 1 megabyte.
  There is a single #define in the source code that can be changed to raise
  this limit as high as 16 megabytes if desired.</p>

  <p>There is a theoretical limit of about 2^32 (4 billion) rows
  in a single table, but there
................................................................................
  number of columns, etc.  Indices are similarly unconstrained.</p>

  <p>The names of tables, indices, view, triggers, and columns can be
  as long as desired.  However, the names of SQL functions (as created
  by the <a href="c_interface.html#cfunc">sqlite_create_function()</a> API)
  may not exceed 255 characters in length.</p>
}

faq {
  Are there any ways to increase the maximum database size limit above 2GB?
} {
  <p>For POSIX systems that support large files, you can increase the maximum
  database size of SQLite by adding the following two options to your
  compiler command line:</p>

  <blockquote><pre>
  -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
  </pre></blockquote>

  <p>The resulting library and "sqlite" executable should be able to work
  with databases as large as 2^41 bytes (2 terabytes).</p>
}

faq {
  What is the maximum size of a VARCHAR in SQLite?
} {
  <p>Remember, SQLite is typeless.  A VARCHAR column can hold as much
  data as any other column.  The total amount of data in a single row
  of the database is limited to 1 megabyte.  You can increase this limit