160 lines
5.4 KiB
HTML
160 lines
5.4 KiB
HTML
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<!-- keywords: SQLITE_TXN_NONE SQLITE_TXN_READ SQLITE_TXN_WRITE {transaction state} -->
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<div class=nosearch>
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<a href="../c3ref/intro.html"><h2>SQLite C Interface</h2></a>
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<h2>Allowed return values from sqlite3_txn_state()</h2>
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</div>
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<blockquote><pre>
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#define SQLITE_TXN_NONE 0
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#define SQLITE_TXN_READ 1
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#define SQLITE_TXN_WRITE 2
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</pre></blockquote>
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<p>
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These constants define the current transaction state of a database file.
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The <a href="../c3ref/txn_state.html">sqlite3_txn_state(D,S)</a> interface returns one of these
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constants in order to describe the transaction state of schema S
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in <a href="../c3ref/sqlite3.html">database connection</a> D.</p>
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<p><dl>
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<a name="sqlitetxnnone"></a>
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<dt>SQLITE_TXN_NONE</dt>
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<dd>The SQLITE_TXN_NONE state means that no transaction is currently
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pending.</dd></p>
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<p><a name="sqlitetxnread"></a>
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<dt>SQLITE_TXN_READ</dt>
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<dd>The SQLITE_TXN_READ state means that the database is currently
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in a read transaction. Content has been read from the database file
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but nothing in the database file has changed. The transaction state
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will advanced to SQLITE_TXN_WRITE if any changes occur and there are
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no other conflicting concurrent write transactions. The transaction
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state will revert to SQLITE_TXN_NONE following a <a href="../lang_transaction.html">ROLLBACK</a> or
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<a href="../lang_transaction.html">COMMIT</a>.</dd></p>
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<p><a name="sqlitetxnwrite"></a>
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<dt>SQLITE_TXN_WRITE</dt>
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<dd>The SQLITE_TXN_WRITE state means that the database is currently
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in a write transaction. Content has been written to the database file
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but has not yet committed. The transaction state will change to
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to SQLITE_TXN_NONE at the next <a href="../lang_transaction.html">ROLLBACK</a> or <a href="../lang_transaction.html">COMMIT</a>.</dd>
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</p><p>See also lists of
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<a href="../c3ref/objlist.html">Objects</a>,
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<a href="../c3ref/constlist.html">Constants</a>, and
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<a href="../c3ref/funclist.html">Functions</a>.</p>
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