125 lines
4.6 KiB
HTML
125 lines
4.6 KiB
HTML
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<link href="../sqlite.css" rel="stylesheet">
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<title>Move a BLOB Handle to a New Row</title>
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<!-- keywords: sqlite3_blob_reopen -->
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<a href="intro.html"><h2>SQLite C Interface</h2></a>
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<h2>Move a BLOB Handle to a New Row</h2>
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</div>
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<blockquote><pre>
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int sqlite3_blob_reopen(sqlite3_blob *, sqlite3_int64);
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</pre></blockquote>
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<p>
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This function is used to move an existing <a href="../c3ref/blob.html">BLOB handle</a> so that it points
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to a different row of the same database table. The new row is identified
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by the rowid value passed as the second argument. Only the row can be
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changed. The database, table and column on which the blob handle is open
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remain the same. Moving an existing <a href="../c3ref/blob.html">BLOB handle</a> to a new row is
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faster than closing the existing handle and opening a new one.</p>
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<p>The new row must meet the same criteria as for <a href="../c3ref/blob_open.html">sqlite3_blob_open()</a> -
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it must exist and there must be either a blob or text value stored in
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the nominated column. If the new row is not present in the table, or if
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it does not contain a blob or text value, or if another error occurs, an
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SQLite error code is returned and the blob handle is considered aborted.
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All subsequent calls to <a href="../c3ref/blob_read.html">sqlite3_blob_read()</a>, <a href="../c3ref/blob_write.html">sqlite3_blob_write()</a> or
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<a href="../c3ref/blob_reopen.html">sqlite3_blob_reopen()</a> on an aborted blob handle immediately return
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SQLITE_ABORT. Calling <a href="../c3ref/blob_bytes.html">sqlite3_blob_bytes()</a> on an aborted blob handle
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always returns zero.</p>
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<p>This function sets the database handle error code and message.
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</p><p>See also lists of
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<a href="objlist.html">Objects</a>,
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<a href="constlist.html">Constants</a>, and
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<a href="funclist.html">Functions</a>.</p>
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