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+
+
+<h2>SQL Features That SQLite Does Not Implement</h2>
+
+<p>
+SQLite implements most of the common features of SQL.
+Rather than try to list all the features of SQL that SQLite does
+support, it is much easier to list those that it does not.
+Unsupported features of SQL are shown below.</p>
+
+<p>
+See also the
+<a href="quirks.html">Quirks, Caveats, and Gotchas</a> of SQLite.
+
+<table cellpadding="10">
+
+<tr><td valign="top"><b><nobr>Complete ALTER TABLE support</nobr></b></td><td width="10">&nbsp;</th><td valign="top">
+ Only the RENAME TABLE, ADD COLUMN, RENAME COLUMN, and DROP COLUMN
+ variants of the ALTER TABLE command are supported. Other kinds of
+ ALTER TABLE operations such as
+ ALTER COLUMN, ADD CONSTRAINT, and so forth are omitted.
+</td></tr><tr><td valign="top"><b><nobr>Complete trigger support</nobr></b></td><td width="10">&nbsp;</th><td valign="top">
+ FOR EACH ROW triggers are supported but not FOR EACH STATEMENT
+ triggers.
+</td></tr><tr><td valign="top"><b><nobr>Writing to VIEWs</nobr></b></td><td width="10">&nbsp;</th><td valign="top">
+ VIEWs in SQLite are read-only. You may not execute a DELETE, INSERT, or
+ UPDATE statement on a view. But you can create a trigger
+ that fires on an attempt to DELETE, INSERT, or UPDATE a view and do
+ what you need in the body of the trigger.
+</td></tr><tr><td valign="top"><b><nobr>GRANT and REVOKE</nobr></b></td><td width="10">&nbsp;</th><td valign="top">
+ Since SQLite reads and writes an ordinary disk file, the
+ only access permissions that can be applied are the normal
+ file access permissions of the underlying operating system.
+ The GRANT and REVOKE commands commonly found on client/server
+ RDBMSes are not implemented because they would be meaningless
+ for an embedded database engine.
+</td></tr>
+</table>
+<p align="center"><small><i>This page last modified on <a href="https://sqlite.org/docsrc/honeypot" id="mtimelink" data-href="https://sqlite.org/docsrc/finfo/pages/omitted.in?m=f9ca306d71">2022-04-18 02:55:50</a> UTC </small></i></p>
+