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REINDEX </td>
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<span id="nsrTitle">SQLite Language Reference Documentation</span>
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<a id="exampleSectionLink" href="#codeExampleToggle" onclick="OpenSection(codeExampleToggle)">Example</a>
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<h1 class="heading">
SQL As Understood By SQLite</h1>
<h4>
REINDEX</h4>
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<i><font color="#ff3434">sql-statement</font></i> ::=</td>
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<b><font color="#2c2cf0">REINDEX </font></b><i><font color="#ff3434">collation
name</font></i><b><font
color="#2c2cf0"></font></b></td>
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<i><font color="#ff3434">sql-statement</font></i> ::=</td>
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<b><font color="#2c2cf0">REINDEX </font></b>[<b><font color="#2c2cf0"></font></b><i><font
color="#ff3434">database-name</font></i><b><font color="#2c2cf0"> <big>.</big></font></b>]<b><font
color="#2c2cf0"> </font></b><i><font color="#ff3434">table/index-name</font></i><b><font
color="#2c2cf0"></font></b></td>
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<p>
The REINDEX command is used to delete and recreate indices from scratch. This is
useful when the definition of a collation sequence has changed.
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In the first form, all indices in all attached databases that use the named collation
sequence are recreated. In the second form, if <i>[database-name.]table/index-name</i>
identifies a table, then all indices associated with the table are rebuilt. If an
index is identified, then only this specific index is deleted and recreated.
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If no <i>database-name</i> is specified and there exists both a table or index and
a collation sequence of the specified name, then indices associated with the collation
sequence only are reconstructed. This ambiguity may be dispelled by always specifying
a <i>database-name</i> when reindexing a specific table or index.
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